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Journal articles on the topic 'Fluvial sediments'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Rosales-Hoz, L., A. Carranza-Edwards, C. Mendez-Jaime, and M. A. Monreal-Gómez. "Metals in shelf sediments and their association with continental discharges in a tropical zone." Marine and Freshwater Research 50, no. 3 (1999): 189. http://dx.doi.org/10.1071/mf98107.

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Geochemical studies of shelf sediments of the south-eastern Gulf of Mexico were carried out to understand the influence of fluvial and fluvio–lagoonal discharges on sediment geochemistry and to study elemental distribution patterns that could be used together with hydrographic and sedimentological data to assess depth circulation. On the basis of sediment chemical composition, three provinces were identified: fluvial, fluvio–lagoonal and calcareous; their distribution is a function of circulation patterns and fluvio and fluvio–lagoonal discharges. Factor analysis separated the sediments into t

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2

Woronko, Barbara, Paweł Zieliński, and Robert Jan Sokołowski. "Climate evolution during the Pleniglacial and Late Glacial as recorded in quartz grain morphoscopy of fluvial to aeolian successions of the European Sand Belt." Geologos 21, no. 2 (2015): 89–103. http://dx.doi.org/10.1515/logos-2015-0005.

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Abstract We present results of research into fluvial to aeolian successions at four sites in the foreland of the Last Glacial Maximum, i.e., the central part of the “European Sand Belt”. These sites include dune fields on higher-lying river terraces and alluvial fans. Sediments were subjected to detailed lithofacies analyses and sampling for morphoscopic assessment of quartz grains. Based on these results, three units were identified in the sedimentary succession: fluvial, fluvio-aeolian and aeolian. Material with traces of aeolian origin predominate in these sediments and this enabled conclus

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3

Liu, Zhe, Jinsong Yang, Hua Zhao, Lei Song, and Chengmin Wang. "Luminescence Dating of Holocene Fluvial Sediments from the Daluze Area in the North China Plain." Water 17, no. 13 (2025): 1942. https://doi.org/10.3390/w17131942.

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Optically stimulated luminescence (OSL) dating is an important method for determining the ages of late Quaternary sediments. However, partial bleaching of quartz in fluvial sediments remains a challenge, with debates on grain-size effects in different sedimentary environments. The aim of this paper is to explore the bleaching degree and its influencing factors of different grain-size quartz in fluvial sediments from the Yanchi section in the Daluze area, North China Plain. According to sedimentological methods and grain size analysis, lacustrine and fluvial layers were identified, and the ages

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4

Marinho, Rogério Ribeiro, Antonio Fábio Sabbá Guimarães Vieira, and Feliciano De Souza Maciel. "Análise Montante-Jusante da Granulometria dos Sedimentos de Fundo e Suspenso do Rio Negro e Tributários (Bacia Amazônica, Brasil)." Revista Brasileira de Geografia Física 14, no. 2 (2021): 997. http://dx.doi.org/10.26848/rbgf.v14.2.p997-1008.

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O conhecimento das características físicas de sedimentos transportados por grandes sistemas fluviais possui significativa importância para o entendimento de processos geomorfológicos e hidrológicos. O nível de conhecimento dos grandes sistemas fluviais da Amazônia e sua relação com o transporte de sedimentos ainda é limitado, resultando em lacunas de conhecimento sobre a dinâmica da paisagem nesta complexa região. Este trabalho teve como objetivo avaliar a distribuição espacial da granulometria de sedimentos de fundo e suspenso do Rio Negro e tributários. Realizou-se análise da distribuição do

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5

Sawakuchi, André Oliveira, Vinicius Ribau Mendes, Fabiano do Nascimento Pupim, et al. "Optically stimulated luminescence and isothermal thermoluminescence dating of high sensitivity and well bleached quartz from Brazilian sediments: from Late Holocene to beyond the Quaternary?" Brazilian Journal of Geology 46, suppl 1 (2016): 209–26. http://dx.doi.org/10.1590/2317-488920160030295.

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ABSTRACT: The development of optically stimulated luminescence (OSL) dating of sediments has led to considerable advance in the geochronology of the Quaternary. OSL dating is a well established technique to determine sediment burial ages from tens of years to few hundred thousand years. Recent studies have shown that Quaternary sediments of Brazil are dominated by quartz grains with high luminescence sensitivity, allowing the determination of precise and reliable OSL burial ages. In this paper, we show examples of OSL dating of quartz aliquots and single grains from different regions in Brazil

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6

Wang, H., and X. Jia. "Selective deposition response to aeolian-fluvial sediment supply in the desert braided channel of the Upper Yellow River, China." Natural Hazards and Earth System Sciences Discussions 3, no. 2 (2015): 1269–90. http://dx.doi.org/10.5194/nhessd-3-1269-2015.

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Abstract. Rivers flow across aeolian dunes and develop braided stream channels. Both aeolian and fluvial sediment supplies regulate sediment transport and deposition in such a cross-dune braided river. Here we show a significant selective deposition in response to both aeolian and fluvial sediment supplies in the Ulan Buh desert braided channel. This selective deposition developed by the interaction between the flows and the Aeolian-fluvial sediment supplies, making the coarser sediments (> 0.08 mm) from aeolian sand supply and bank erosion to accumulate in the channel center and the finer

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7

Wang, H., X. Jia, Y. Li, and W. Peng. "Selective deposition response to aeolian–fluvial sediment supply in the desert braided channel of the upper Yellow River, China." Natural Hazards and Earth System Sciences 15, no. 9 (2015): 1955–62. http://dx.doi.org/10.5194/nhess-15-1955-2015.

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Abstract. Rivers flow across aeolian dunes and develop braided stream channels. Both aeolian and fluvial sediment supplies regulate sediment transport and deposition in such cross-dune braided rivers. Here we show a significant selective deposition in response to both aeolian and fluvial sediment supplies in the Ulan Buh desert braided channel. The Ulan Buh desert is the main coarse sediment source for this desert braided channel, and the mean percentage of the coarser (> 0.08 mm) grains on the aeolian dunes surface is 95.34 %. The lateral selective deposition process is developed by the in

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8

Słowik-Opoka, Ewa, and Anna Michno. "Factors Diversifying the Characteristics of Fluvial Sediments Accumulated in Mountain Stream Channels—A Case Study from the Polish Carpathians." Water 16, no. 23 (2024): 3476. https://doi.org/10.3390/w16233476.

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This paper presents the diversification of fluvial sediments caused by the occurrence of coarse woody debris (CWD), boulder steps (BSs), and mixed structures (MSs), understood as a combination of CWD and BSs in a stream channel in a small forested catchment in the Polish Carpathians. This research is crucial for understanding the role of this kind of threshold present in a stream channel in shaping fluvial sediment characteristics in small forested mountain catchments. Our hypothesis is that the threshold type in a stream channel determines fluvial sediment diversification. This was verified i

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Halifa-Marín, A., P. Pérez-Cutillas, M. Almagro, and C. Boix-Fayos. "Presión antrópica sobre cuencas de drenaje en ecosistemas frágiles: variaciones en las existencias (stock) de carbono orgánico asociadas a cambios morfológicos fluviales." Cuadernos de Investigación Geográfica 45, no. 1 (2019): 245. http://dx.doi.org/10.18172/cig.3690.

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Anthropic changes in the drainage area of catchments can influence dominant erosion processes and sediment sources and mobilize specific carbon pools. It also causes changes in the sedimentary dynamics and thus in the fluvial morphology. At the same time fluvial morphologies can create the conditions for stabilizing organic carbon (OC) in sediments by burial, carbon preservation, slowing down mineralization processes, and terrestrial or aquatic plant colonization. All this might have a significant impact on the fluvial carbon sink or sources. This work explores the impact of changes in the dra

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Galia, Tomáš, and Václav Škarpich. "Coarse Bed Sediments in a Headwater Channel as Indicators of Fluvial Processes and Slope-Channel Coupling: A Case Study from the Carpathian Mountains (Czech Republic)." Moravian Geographical Reports 21, no. 3 (2013): 2–11. http://dx.doi.org/10.2478/mgr-2013-0012.

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Abstract The character of riverbed sediments usually reflects fluvial processes and the dynamics of sediment transport in fluvial systems. The approach in this study was based on the measurement of the largest boulders located within a bankfull channel, and on the observation of changes in their size in the longitudinal profile of a headwater stream in the Moravian-Silesian Beskids Mountains. The resulting trends in a particle-size index reflect the character of sediment delivery into channel segments and the recent channel-forming processes. The largest boulders were observed in channel secti

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ŠORŠA, Ajka, Teja ČERU, Zsófia KOVÁCS, Gyozo JORDAN, Katalin Mária DUDÁS, and Peter SZABÓ. "ASSESSMENT OF RIVER SEDIMENT QUALITY ACCORDING TO THE EU WATER FRAMEWORK DIRECTIVE IN LOWLAND FLUVIAL CONDITIONS. A CASE STUDY IN THE DRAVA RIVER AREA, DANUBE RIVER BASIN." Carpathian Journal of Earth and Environmental Sciences 17, no. 2 (2022): 459–68. http://dx.doi.org/10.26471/cjees/2022/017/235.

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The EU Water Framework Directive requires the monitoring and evaluation of surface water sediment quality based on the assessment of risk posed by contamination on the biotic receptors. Fluvial sediments are important receptors of hazardous substances (HSs) pollution from the upstream catchment areas in the Danube River Basin (DRB). For the development of systematic sediment quality monitoring and evaluation, the Drava River region on the border of Hungary and Croatia was selected as a test area representative of lowland hydromorphological conditions. Overbank (floodplain) sediments and river

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12

Aleixo, Yan De Mello, Márcio Henrique De Campos Zancopé, and Luis Felipe Soares Cherem. "O Papel do Perfil Longitudinal na atenuação do Potencial de Transporte de Sedimentos em Bacias Hidrográficas: o caso do Parque Estadual de Terra Ronca (GO), Brasil." Revista Brasileira de Geografia Física 12, no. 5 (2019): 1730. http://dx.doi.org/10.26848/rbgf.v12.5.p1730-1745.

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A forma dos perfis longitudinais dos cursos d’água associada à distribuição das planícies aluviais adjacentes permitem identificar trechos com predomínio de processos agradacionais e denudacionais nos sistemas fluviais. Este trabalho identifica trechos dos perfis longitudinais dos rios a montante do Parque Estadual de Terra Ronca, no nordeste do estado de Goiás, que possuem tendências diferentes para transferência de sedimentos para jusante. Os rios cujos perfis longitudinais mais atenuam o potencial de transferência de sedimentos são: o São Vicente, da Lapa e Angélica. A forma dos perfis e a

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13

Chang, Chang Shen, A. H. Yusoff, C. A. R. Mohamed, et al. "Geochemistry of Rare Earth Elements in Pahang River Sediment, Malaysia." Kompleksnoe Ispolʹzovanie Mineralʹnogo syrʹâ/Complex Use of Mineral Resources/Mineraldik Shikisattardy Keshendi Paidalanu 331, no. 4 (2024): 42–50. http://dx.doi.org/10.31643/2024/6445.37.

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Rare earth elements (REE) are a set of 17 chemically similar metallic elements including 15 lanthanides, scandium and yttrium. The current status of REE as a global strategic commodity has encouraged the identification of REE ore deposits. This research is carried out to identify the mining feasibility of fluvial sediment REE and to understand the sediment's physical and chemical characteristics and effects on the geochemical behaviour of REE in the longest river of Peninsular Malaysia namely Pahang River. Surface sediment samples were collected along Pahang River (n=44) in approximately 10 km

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14

Omoboh, Jonathan Obukowho, Minapuyi I. Odigi, and Kingsley O. Okengwu. "Depositional Processes, Facies and Environment of Deposition of the Upper Miocene (Seravillian/Tortonian) Sediments in the Jokg Field – Eastern Niger Delta." Journal of Scientific and Engineering Research 9, no. 2 (2022): 28–33. https://doi.org/10.5281/zenodo.10510505.

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<strong>Abstract </strong>This work aim to identify the depositional environments of the Seravillian/Tortonian sediments of the coastal swamp depobelt in the Niger Delta basin through the features preserved in the facies by depositional processes.  The vertical change in grain size - a product of change in energy of the depositional processes preserved in the identified facies was employed to identify the depositional process (s) that generate the facies. The change in grain size was identified from the gamma ray log trend which have been known to correlate and calibrated with grain size

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15

Retelle, Michael J. "Stratigraphy and Sedimentology of Coastal Lacustrine Basins, Northeastern Ellesmere Island, N. W. T." Géographie physique et Quaternaire 40, no. 2 (2007): 117–28. http://dx.doi.org/10.7202/032632ar.

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ABSTRACT Sediment cores recovered from three high arctic coastal lake basins contain a sequence of glaciomarine sediments overlain by laminated to massive-bedded lacustrine sediments. Glaciomarine sediments were deposited while the basins were isostatically depressed below sea level. Subsequent to emergence of the basin from the sea, lacustrine sediments accumulated in each basin. A transitional fades between the marine and lacustrine units represents an isolation interval during which trapped sea water lay beneath a freshwater lens. Sedimentological and faunal evidence from sediment cores dem

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16

de Jalón, Diego García, Martina Bussettini, Massimo Rinaldi, et al. "Linking environmental flows to sediment dynamics." Water Policy 19, no. 2 (2016): 358–75. http://dx.doi.org/10.2166/wp.2016.106.

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This is a policy discussion paper aimed at addressing possible alternative approaches for environmental flows (e-Flows) assessment and identification within the context of best strategies for fluvial restoration. We focus on dammed rivers in Mediterranean regions. Fluvial species and their ecological integrity are the result of their evolutionary adaptation to river habitats. Flowing water is the main driver for development and maintenance of these habitats, which is why e-Flows are needed where societal demands are depleting water resources. Fluvial habitats are also shaped by the combined in

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17

Marren, Philip M. "Sedimentology of proglacial rivers in eastern Scotland during the Late Devensian." Transactions of the Royal Society of Edinburgh: Earth Sciences 92, no. 2 (2001): 149–71. http://dx.doi.org/10.1017/s0263593300000110.

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ABSTRACTThis paper reconstructs the characteristics of rivers which deposited proglacial fluvial sediments in east-central Scotland during the Late Devensian. Sediment depositional architecture and geometry, together with the relationship between high-stage and falling and low-stage depositional elements, were used to relate the proglacial sediments to the glacial meltwater discharge regime. The proglacial river systems studied were dominated by ‘normal’ ablation controlled discharge, rather than by high magnitude flood events. Consequently there is a great deal of spatial and vertical variabi

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18

Hori, Kazuaki, Susumu Tanabe, and Atsushi Urabe. "Accumulation of thick fluvial sediments in the Shinano River incised-valley fills: implications for sequence stratigraphy and alluvial architecture." Journal of Sedimentary Research 93, no. 7 (2023): 453–62. http://dx.doi.org/10.2110/jsr.2022.049.

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ABSTRACT The relationship between fluvial systems and base-level changes, controlled mainly by sea-level fluctuations and tectonic activity, on time scales of 103–104 years, is important for evaluating and improving nonmarine sequence stratigraphy and numerical and physical alluvial architecture models. However, there are not enough quantitative data available from field studies, especially for periods of rapid base-level rise. The Echigo Plain, Japan, is a fluvial–coastal lowland where the tidal range is very small and where a very deep valley was incised by the Shinano River during the lates

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Li, Fuqiang, Baotian Pan, Zhongping Lai, Hongshan Gao, and Xianjiao Ou. "Identifying the degree of luminescence signal bleaching in fluvial sediments from the Inner Mongolian reaches of the Yellow River." Geochronometria 45, no. 1 (2018): 82–96. http://dx.doi.org/10.1515/geochr-2015-0087.

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Abstract The partial bleaching of the luminescence signal prior to deposition results in age overestimation, and can be a problem in delineating fluvial evolution within an OSL chronological framework. The Inner Mongolian reaches of the Yellow River are characterised by a high sediment load and complex sources of sediments. To test the incomplete bleaching occurring in this type of environment, the residual doses and the luminescence signal characteristics of different particle size fractions from 14 modern fluvial sediment samples were investigated. Furthermore, 26 OSL ages derived from drill

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Bomer, Edwin J., Carol A. Wilson, and Dilip K. Datta. "An Integrated Approach for Constraining Depositional Zones in a Tide-Influenced River: Insights from the Gorai River, Southwest Bangladesh." Water 11, no. 10 (2019): 2047. http://dx.doi.org/10.3390/w11102047.

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The tidal to fluvial transition (TFT) of estuaries and coastal rivers is one of the most complex environments on Earth with respect to the transportation and deposition of sediment, owing in large part to competing fluvial and marine processes. While there have been recent advances in the stratigraphic understanding of the TFT, it is still unclear whether these findings are site-specific or representative of mixed tidal-fluvial systems worldwide. Yet, research from this depositional domain holds profound societal and economic importance. For instance, understanding the underlying stratigraphic

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21

Pailles, C., and PW Moody. "Phosphorus sorption-desorption by some sediments of the Johnstone Rivers catchment, northern Queensland." Marine and Freshwater Research 43, no. 6 (1992): 1535. http://dx.doi.org/10.1071/mf9921535.

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Phosphorus (P) sorption-desorption characteristics were determined for 11 sediments from the Johnstone Rivers catchment, northern Queensland. Sediments were selected to cover a range in values of Bray extractable P from 0.1 to 10.4 mg P kg-1. P sorption curves were determined by using 0.01 M NaCl to simulate fluvial water conditions and, on a restricted number of sediments, 0.5 M NaCl to simulate sea water. The amounts of P released in 10 successive extractions for 30 min with 0.01 M CaCl2 were determined for each sediment. The amounts of P desorbed either declined to nondetectable levels or d

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Sidorchuk, A. Yu. "THE FLUVIAL SYSTEM ON THE EAST EUROPEAN PLAIN: SEDIMENT SOURCE AND SINk." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 11, no. 3 (2018): 5–20. http://dx.doi.org/10.24057/2071-9388-2018-11-3-05-20.

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The modern fluvial system on the lowland East European Plain is of depositional type. Sediment transport to the seas is only a few percent of the total erosion, and the main part of eroded material is accumulated in the channels. The recent deposition of suspended sediments is caused by accelerated soil erosion on the arable slopes, which led to a high rate of lateral sediment input and deposition at the river headwaters and on the floodplains. The process of accumulation is facilitated by the unfilled “negative” volume of the net of dry valleys formed during the Late Glacial catastrophic eros

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Liu, Fenliang, Hongshan Gao, Zongmeng Li, Changjun Huang, Zhen Xi, and Yun Xue. "Geochronological and Sedimentological Study of the Fluvio-Lacustrine Deposits from Shigu to Longjie: Implications for the Evolution of the Lower Jinsha River since the Early Pleistocene." Water 15, no. 20 (2023): 3613. http://dx.doi.org/10.3390/w15203613.

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The formation of the Jinsha River drainage is a significant subject of concern in the geological and geomorphological fields. Among them, one key question is whether there was a regional paleo lake into which Lower Jinsha River drainage drained during the late Pliocene to early Pleistocene, due to massive fluvio-lacustrine sediments widely distributed in the Lower Jinsha River. Nevertheless, there has yet to be a consensus on the genesis of those fluvio-lacustrine sediments due to poor sedimentological and chronological data. In this study, to unravel the origin of those fluvio-lacustrine sedi

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ETOBRO, Israel Aruoriwo Abiodun, Omabehere Innocent Ejeh, and Glory Oghenevwede Ovwamuedo. "FLUVIAL SEDIMENTOLOGY OF THE RIVER ETHIOPE SEDIMENTS, NIGER DELTA, SOUTHERN NIGERIA." Rudarsko-geološko-naftni zbornik 39, no. 2 (2024): 45–61. http://dx.doi.org/10.17794/rgn.2024.2.4.

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Despite modern advances in the study of rivers globally, there remains a plethora of work to be done especially in the area of fluvial sedimentology of some present-day river systems. Previous studies on fluvial sedimentology of the sediments of the river Ethiope (in southern Nigeria) are meagre. Grain size analytical methods are indispensable to infer siliciclastic sediments' hydrodynamic conditions, transportation mode(s), and sedimentary environments. Twenty-eight samples (n=28) of the river Ethiope sediments were selected and studied using granulometric analyses (mechanical sieving and peb

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Adiotomre, Emmanuel E., Innocent O. Ejeh, and Edwin O. Adaikpoh. "Geochemistry of Fluvial Sediments from Geregu, Southwest Nigeria." Materials and Geoenvironment 64, no. 1 (2017): 35–52. http://dx.doi.org/10.1515/rmzmag-2017-0004.

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Abstract Geochemical analysis of fluvial sediments on the banks of River Ero using inductively coupled plasma mass spectrometry illustrates their maturity, provenance and tectonic setting. The analysed sediment samples show low SiO2/Al2O3 ratios of 2.92-2.99 (units FL_A, FL_B and FL_E) and high SiO2/Al2O3 ratios of 4.064-4.852 (units FL_C, FL_D, FL_F and FL_G). Sediments were geochemically classified as shales (units FL_A, FL_B and FL_E) and greywackes (units FL_C, FL_D, FL_F and FL_G). Variability in sediment maturity (FL_F > FL_G >FL_C >FL_D >FL_A > FL_B > FL_E) parallels a

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Personius, Stephen F., Harvey M. Kelsey, and Paul C. Grabau. "Evidence for Regional Stream Aggradation in the Central Oregon Coast Range during the Pleistocene-Holocene Transition." Quaternary Research 40, no. 3 (1993): 297–308. http://dx.doi.org/10.1006/qres.1993.1083.

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AbstractLow, nearly continuous terraces of similar age are present along streams in drainage basins that range in size from Drift Creek (190 km2) to the Umpqua River (11,800 km2) in the Oregon Coast Range. Radiocarbon ages from near the bose of fluvial sediments underlying these terraces are clustered at about 9000-11,000 14C yr B.P. Beveled bedrock surfaces (straths) that underlie the fluvial sediments are 1-8 m above summer stream levels and are present along most of the nontidal reaches of the rivers that we studied. Where exposed, the bedrock straths are overlain by 2-11 m of fluvial sedim

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Hein, Frances J., James P. M. Syvitski, Lynda A. Dredge, and Bernard F. Long. "Quaternary sedimentation and marine placers along the North Shore, Gulf of St. Lawrence." Canadian Journal of Earth Sciences 30, no. 3 (1993): 553–74. http://dx.doi.org/10.1139/e93-043.

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Offshore areas, along the North Shore of the St. Lawrence Estuary, have major lithostratigraphic and seismostratigraphic units that relate to the advance or retreat of the Late Wisconsinan Ice Sheet, subsequent marine transgression or regression, and reworking of postglacial deposits. Glacial diamicton and glaciomarine units (acoustic units 1 and 2) were emplaced between >18 and 14.5 ka, by basal meltout or ice-marginal sedimentation; they reflect ice-proximal sedimentation associated with ice-terminal stillstands. Deep-water muds (acoustic unit 3) represent ice-distal accumulation of glaci

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Suandhi, P. A., M. Rozalli, W. Utomo, A. Budiman, and A. Bachtiar. "Paleogene Sediment Character of Mountain Front Central Sumatra Basin." Indonesian Journal on Geoscience 8, no. 3 (2013): 143–49. http://dx.doi.org/10.17014/ijog.8.3.143-149.

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DOI: 10.17014/ijog.v8i3.164The SE-NW trending Mountain Front of Central Sumatra Basin is located in the southern part of the basin. The Mountain Front is elongated parallel to the Bukit Barisan Mountain, extending from the Regencies of North Padang Lawas (Gunung Tua in the northwest), Rokan Hulu, Kampar, Kuantan Singingi, and Inderagiri Hulu Regency in the southeast. The Palaeogene sediments also represent potential exploration objectives in Central Sumatra Basin, especially in the mountain front area. Limited detailed Palaeogene sedimentology information cause difficulties in hydrocarbon expl

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Demurtas, Luca, Luigi Bruno, Stefano Lugli, and Daniela Fontana. "Evolution of the Po–Alpine River System during the Last 45 Ky Inferred from Stratigraphic and Compositional Evidence (Ostiglia, Northern Italy)." Geosciences 12, no. 9 (2022): 342. http://dx.doi.org/10.3390/geosciences12090342.

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The stratigraphic and compositional study of three sediment cores recovered close to the Po River near Ostiglia provides clues on changes in fluvial dynamics at the transition from the last glacial to the present interglacial. Upper Pleistocene units are dominated by sands with high content in volcanic lithics, denoting high sediment supply from the south-Alpine fluvio-glacial tributary system. The Early–Mid Holocene unit, peat-rich and barren in fluvial sands, results from low sediment supply and waterlogging, encompassing the maximum marine ingression. The Late Holocene unit, characterized b

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Shi, Wei, Hanchao Jiang, Hongyan Xu, et al. "Response of modern fluvial sediments to regional tectonic activity along the upper Min River, eastern Tibet." Earth Surface Dynamics 10, no. 6 (2022): 1195–209. http://dx.doi.org/10.5194/esurf-10-1195-2022.

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Abstract. The deposition of fluvial sediments in tectonically active areas is mainly controlled by tectonics, climate, and associated Earth surface processes; consequently, fluvial sediments can provide a valuable record of changes in regional climate and tectonic activity. In this study, we conducted a detailed analysis of the grain-size distribution in modern fluvial sediments from the upper Min River, eastern Tibet. These data, combined with information on regional climate, vegetation, hydrology, geomorphology, lithology, and fault slip rate, indicate that modern regional tectonic activity

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Désy, JC, J. F. Archambault, B. Pinel-Alloul, J. Hubert, and P. GC Campbell. "Relationships between total mercury in sediments and methyl mercury in the freshwater gastropod prosobranch Bithynia tentaculata in the St. Lawrence River, Quebec." Canadian Journal of Fisheries and Aquatic Sciences 57, S1 (2000): 164–73. http://dx.doi.org/10.1139/f99-231.

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Total Hg concentrations in sediment and methyl mercury (MeHg) levels in the gastropod species Bithynia tentaculata were evaluated at 21 stations in the fluvial corridor of the St. Lawrence River (Quebec, Canada). In the sediments (n = 21), total Hg concentrations ranged from 34 to 2790 ng·g dry weight-1. In the gastropods, MeHg concentrations varied from 15 to 290 ng·g dry weight-1 in undepurated gastropods (n = 20) and from 41 to 420 ng·g dry weight-1 in depurated gastropods (n = 13; without gut contents). The southern sector of Lake St. Louis, located near the Îles-de-la-Paix, had significan

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Nicholson, Uisdean, Andrew Carter, Paula Robinson, and David I. M. Macdonald. "Eocene–Recent drainage evolution of the Colorado River and its precursor: an integrated provenance perspective from SW California." Geological Society, London, Special Publications 488, no. 1 (2018): 47–72. http://dx.doi.org/10.1144/sp488-2019-272.

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AbstractThe Colorado River in the SW of the USA is one of Earth's few continental-scale rivers with an active margin delta. Deformation along this transform margin, as well as associated intra-plate strain, has resulted in significant changes in sediment routing from the continental interior and post-depositional translation of older deltaic units. The oldest candidate deposits, fluvial sandstones of the Eocene Sespe Group, are now exposed in the Santa Monica Mountains, 300 km to the north of the Colorado River. Heavy mineral data from this basin indicate that sediment was sourced by a large r

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Jones, MR. "Surficial sediments of the western Gulf of Carpentaria, Australia." Marine and Freshwater Research 38, no. 1 (1987): 151. http://dx.doi.org/10.1071/mf9870151.

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Modern sedimentation in the Gulf of Carpentaria is confined principally to marginal areas in water depths of less than 50 m. Within this zone, the distribution of sediments is irregular, being controlled by proximity to sediment sources and degree of exposure to waves and tidal activity. This is particularly so in the western gulf, where fluvial sediments supplied to Limmen Bight have been transported by waves and tides northwards beyond that embayment to accumulate in the sheltered environment of Blue Mud Bay. Limmen Bight is exposed to the south-easterlies, which produce sufficient wave acti

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Álvarez-Vázquez, Miguel Ángel, and Elena De Uña-Álvarez. "An exploratory study to test sediments trapped by potholes in Bedrock Rivers as environmental indicators (NW Iberian Massif)." Cuaternario y Geomorfología 35, no. 1-2 (2021): 59–77. http://dx.doi.org/10.17735/cyg.v35i1-2.89054.

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The capacity of fluvial potholes to trap sediments, together with the geochemical analysis of their stored sediments for environmental assessment, is an overlooked research topic in small bedrock rivers. The present exploratory study is focused on this issue. It was developed in a small river over rock, in the inland territory of Galicia (NW Iberian Peninsula). The study started from an analysis of the inventoried fluvial potholes to identify suitable forms for sampling, and the collection of sediment samples within them. After this, the determination of the grain texture, mineralogy and conte

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QUINTERO, Daniela I., de AZAREVICH Vanina LÓPEZ, Silvia E. FERREIRA, Adriana E. ROVERE, Patricia C. ESPINOZA, and Carolina R. SULBELZA. "Análisis granulométrico de sedimentos y dinámica fluvial en la cuenca del río Lorohuasi (Cafayate, Salta) / Granulometric analysis of sediments and fluvial dynamics in the Lorohuasi river basin (Cafayate, Salta)." Serie Correlación Geológica 37, no. 1 (2021): 19–48. https://doi.org/10.5281/zenodo.5512197.

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<strong>Resumen: </strong>Los procesos fluviales tienen la capacidad de modificar todos los sistemas terrestres. La liberación de componentes, su transporte y depositación como sedimentos por el agua, tienen consecuencias ambientales importantes, muchas de las cuales pueden ser deteriorantes o irreversibles. Las regiones áridas son susceptibles a la erosión hídrica, ya que la sola existencia de flujo ácueo es excepcional y la situación común es su extrema velocidad, que se conjuga con la variabilidad espacio-temporal del transporte de sed

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Meyer, Patricia A., and Carolyn H. Eyles. "Nature and origin of sediments infilling poorly defined buried bedrock valleys adjacent to the Niagara Escarpment, southern Ontario, Canada." Canadian Journal of Earth Sciences 44, no. 1 (2007): 89–105. http://dx.doi.org/10.1139/e06-085.

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The buried Paleozoic bedrock surface of southern Ontario is dissected by an interconnected system of valleys. These buried valleys are infilled with thick successions of glacial, interglacial, and fluvial sediments that contain a lengthy record of changing environmental conditions during the late Quaternary. Detailed logging of over 500 m of sediment recovered from 11 continuously cored boreholes provides the basis for this study. The boreholes were drilled within two poorly defined bedrock valleys located east of the Niagara Escarpment in southern Ontario as part of a groundwater exploration

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Miura, Hideki, Kiichi Moriwaki, Hideaki Maemoku, and Kazuomi Hirakawa. "Fluctuations of the East Antarctic ice-sheet margin since the last glaciation from the stratigraphy of raised beach deposits along the Sôya Coast." Annals of Glaciology 27 (1998): 297–301. http://dx.doi.org/10.3189/1998aog27-1-297-301.

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The fluctuation of the East Antarctic ice-shect (EAIS) margin and relative sea-level change since the last glaciation are discussed from the stratigraphy and TAMS 14C ages of raised beach deposits in the northern part of the Soya Coast.The beach deposits reveal two marine sediment layers with in situ fossil shells of Laternula elliptica, and an interbedded fluvial sediment layer. The l4C ages of fossils in the lower, older marine beds ranged from 36 to 43 ka, and in the upper, younger beds from 4.9 to 5.2 ka without reservoir correction. Neither marine layers nor in situ fossil shells were dis

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Kirk, M. "Westphalian alluvial plain sedimentation, Isle of Arran, Scotland." Geological Magazine 126, no. 4 (1989): 407–21. http://dx.doi.org/10.1017/s0016756800006592.

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AbstractFacies analysis suggests that Westphalian (Upper Carboniferous) Coal Measure sequences on the Isle of Arran, Scotland, were deposited in a proximal alluvial plain environment close to the basin margin. Detailed examination of well exposed coastal sections has revealed the existence of six laterally and vertically interrelated sedimentary facies. Facies 1 to 3 are interpreted as fluvial channel deposits. Low sinuosity multistorey (facies 1), low sinuosity vertically accreted (facies 2), and rare high sinuosity laterally accreted channel deposits (facies 3) are developed. Associated over

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Carranza-Edwards, Arturo, Leticia Rosales-Hoz, and Susana Santiago-Pérez. "Provenance memories and maturity of holocene sands in northwest Mexico." Canadian Journal of Earth Sciences 31, no. 10 (1994): 1550–56. http://dx.doi.org/10.1139/e94-137.

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Beach and fluvial sediments from the region around Todos Santos Bay, Baja California, have been studied to determine their maturity, provenance, chemical alteration, and tectonic relationships. Analysis of the CaO–Na2O–K2O content of several samples demonstrated a difference between those from a beach environment and those from a fluvial environment. Transport affects the characteristics of the sediment, producing an enrichment of material resistant to chemical and physical attack on the beach area. The beach sand samples are mineralogically and chemically more mature than those from the fluvi

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Martínez-Mena, María, María Almagro, Noelia García-Franco, Joris de Vente, Eloisa García, and Carolina Boix-Fayos. "Fluvial sedimentary deposits as carbon sinks: organic carbon pools and stabilization mechanisms across a Mediterranean catchment." Biogeosciences 16, no. 5 (2019): 1035–51. http://dx.doi.org/10.5194/bg-16-1035-2019.

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Abstract. The role of fluvial sedimentary areas as organic carbon sinks remains largely unquantified. Little is known about mechanisms of organic carbon (OC) stabilization in alluvial sediments in semiarid and subhumid catchments where those mechanisms are quite complex because sediments are often redistributed and exposed to a range of environmental conditions in intermittent and perennial fluvial courses within the same catchment. The main goal of this study was to evaluate the contribution of transport and depositional areas as sources or sinks of CO2 at the catchment scale. We used physica

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Khan, A. A., and A. Sonakia. "Quaternary Deposits of Narmada with Special Reference to the Hominid Fossils." Journal Geological Society of India 39, no. 2 (1992): 147–54. http://dx.doi.org/10.17491/jgsi/1992/390206.

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Abstract The upper 70 m to 90 m of the Narmada alluvium was deposited in a single aggradational episode with minor pauses when dissection of the alluvium produced two terraces (NT3-NT2). The sediments of this aggradation episode constitute three lithostratigraphic units viz., Boulder conglomerate, Sohagpur and Shahganj Fomations. The sediments of the alluvial phase are underlain by a boulder bed of glacio-fluvial origin. Thus, the fossiliferous boulder conglomerate, the basal unit of the alluvium marks a disconformity between the lower glacio-fluvial boulder layer and the upper fluvial sedimen

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Porzionato, Natalia, Mariangeles Mellota, Roberto Candal, and Gustavo Curutchet. "Acid Drainage and Metal Bioleaching by Redox Potencial Changes in Heavy Polluted Fluvial Sediments." Advanced Materials Research 825 (October 2013): 496–99. http://dx.doi.org/10.4028/www.scientific.net/amr.825.496.

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Sediments from polluted urban streams act as a sink of contaminants. The high content of organic matter and sulphides makes the system appropriate for binding heavy metals. However, changes in the redox potential leads to processes in which sediments acts like a low sulphidic ore in an oxidizing environment, and could generate acid drainages. Human and not human disturbances of the sediments could derive in its oxidation catalyzed by sulphur oxidizing bacteria (SOB). This process leads to acidification and metal release. In this study we analyze the acidification potential of anaerobic sedimen

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Bartyik, Tamás, Cristian Floca, Elemér Pál-Molnár, Petru Urdea, Diaa Elsayed Hamed, and György Sipos. "The Potential Use of Osl Properties of Quartz in Investigating Fluvial Processes on the Catchment of River Mureş, Romania." Journal of Environmental Geography 14, no. 1-2 (2021): 58–67. http://dx.doi.org/10.2478/jengeo-2021-0006.

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Abstract To understand the functioning of fluvial systems it is important to investigate dynamics of sediment transport and the source of sediments. In case of reconstructing past processes these studies must be accompanied by the numerical dating of sediment samples. In this respect optically stimulated luminescence is a widely used technique, by which the time of sediment deposition can be directly dated. Recently, in various fluvial environments it has been shown that certain luminescence properties of minerals, and especially that of quartz, can be applied as indicators of fluvial erosion

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Gailleton, Boris, Luca C. Malatesta, Guillaume Cordonnier, and Jean Braun. "CHONK 1.0: landscape evolution framework: cellular automata meets graph theory." Geoscientific Model Development 17, no. 1 (2024): 71–90. http://dx.doi.org/10.5194/gmd-17-71-2024.

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Abstract. Landscape evolution models (LEMs) are prime tools for simulating the evolution of source-to-sink systems through ranges of spatial and temporal scales. A plethora of various empirical laws have been successfully applied to describe the different parts of these systems: fluvial erosion, sediment transport and deposition, hillslope diffusion, or hydrology. Numerical frameworks exist to facilitate the combination of different subsets of laws, mostly by superposing grids of fluxes calculated independently. However, the exercise becomes increasingly challenging when the different laws are

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Liu, Shih-Hung, Robert Hebenstreit, and Margot Böse. "Late Quaternary landform evolution and sedimentary successions in the Miaoli Tableland, northwestern Taiwan." E&G Quaternary Science Journal 71, no. 1 (2022): 1–22. http://dx.doi.org/10.5194/egqsj-71-1-2022.

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Abstract. Elevated Quaternary sedimentary complexes in the western foreland of the central mountain ranges of Taiwan are called tablelands. Their mostly flat surfaces are deeply incised by fluvial processes. The landforms and the fluvial systems in the Miaoli Tableland are investigated by high-resolution terrain analyses based on different datasets. Sediments are described in 51 outcrops and characterized by grain size composition. The outcrops revealed complete or incomplete sequences of the general scheme from bottom to top: sandy tidal–coastal units overlain by gravel- and cobble-rich fluvi

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Balatka, Břetislav, and Jaroslava Loučková. "Quaternary Terraces of the Berounka River." Geografie 96, no. 3 (1991): 145–62. http://dx.doi.org/10.37040/geografie1991096030145.

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The paper brings geomorphological characteristic of Neogene sediments and Pleistocene terraces of the Berounka (the left tributary to the Vltava). The localities of Neogene fluvial and fluvial-lacustrine sediments of Lower Miocene Age are clean-cut and neotectonically dislocated. The Pleistocene terraces (13 levels in 7 groups), diverging downstream, have been incorporated into the stratigraphical Pleistocene system.

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A, Rabiu, and Maigari A S. "Flow velocity and implication on particle size of bottom sediment in the commodore channel lagos, southwestern nigeria." Global Journal of Pure and Applied Sciences 29, no. 1 (2023): 19–27. http://dx.doi.org/10.4314/gjpas.v29i1.3.

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Flow velocity generally influences the erosion, transport and deposition of sediments. Flow velocity and in relation to particle size distribution in the Commodore channel was investigated with the Acoustic doppler current profiler (ADCP), echosounder and veen van grab. Those equipment were deployed through a low draft survey boat to acquire acoustic and sediment data covering the study area. The ADCP measured the current velocity along fourteen established transect lines while twenty surface sediments samples were collected along the banks and center of the channel respectively. Sediment samp

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Droppo, Ian G. "Biofilm structure and bed stability of five contrasting freshwater sediments." Marine and Freshwater Research 60, no. 7 (2009): 690. http://dx.doi.org/10.1071/mf08019.

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Using an annular flume, erosion characteristics of five diverse sediment types (stormwater pond, contaminated lacustrine, fluvial, aquaculture waste and industrial grade kaolin sediment), each with different physical and biological characteristics, were examined for relative erosion resistance and factors contributing to bed sediment stability. Suspended flocs represent primary building blocks of bed sediment with mass settling being independent of suspended solid concentration. Biofilm growth period, depositing floc structure and composition, nutrient supply and sediment properties all played

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Lake, Randal G., and Scott G. Hinch. "Acute effects of suspended sediment angularity on juvenile coho salmon (Oncorhynchus kisutch)." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 5 (1999): 862–67. http://dx.doi.org/10.1139/f99-024.

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To determine the roles of suspended sediment angularity and concentration as contributors to stress and mortality in salmonids, we exposed juvenile coho salmon (Oncorhynchus kisutch) to anthropogenically derived "extremely angular" and "round" silicate sediments over a range of concentrations in 96-h experiments. Stress responses (e.g., decreased leukocrit) were elicited by exposure to both sediment shapes when concentrations were >40 g·L-1, corresponding to the minimum concentration at which physical gill damage was observed. Extremely angular sediments also caused stress responses (e.g.,

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Ryder, June M., and Michael Church. "The Lillooet terraces of Fraser River: a palaeoenvironmental enquiry." Canadian Journal of Earth Sciences 23, no. 6 (1986): 869–84. http://dx.doi.org/10.1139/e86-089.

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The history of Holocene fluvial terraces was investigated by stratigraphic, morphological, and palaeohydrologic methods. The terraces were formed in glaciofluvial and glaciolacustrine sediments by the Fraser River: degradation alternated with episodes of stability and aggradation. The uppermost terraces, four nonpaired surfaces, were occupied by a braided river. Vertical stability was controlled either by the water and sediment discharge of the river or by backwater effects from downstream landslides. The lower terraces, two paired surfaces, and associated fluvial sediments provide evidence fo

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