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Journal articles on the topic 'Debris flow conglomerates'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Anketell, J. M., and S. M. Ghellali. "Stratigraphic Relationships of Basalt Lava Flows to the Pleistocene Sedimentary Sequence of the Mizdah Region, Tripolitania, S.P.L.A.J." Libyan Studies 21 (1990): 61–63. http://dx.doi.org/10.1017/s0263718900001473.

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AbstractCalcreted debris flow breccias which form the lowermost Pleistocene deposits in the Hammadah Al Hamrah region are locally overlain by well cemented conglomerates of the Old Wadi Terraces. These are commonly capped by a younger, mature calcrete which is also found patchily developed on the Tertiary and Mesozoic limestone bedrock. Basalt lava flows rest either on an eroded surface in the conglomerates or directly on the debris flows; however, their relationship to the younger calcrete is rarely seen. In the area north-east of Mizdah a pre-younger calcrete age for the basalts is proposed

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JIPA, Dan C., Cornel OLARIU, and Andrei BRICEAG. "Patrulius Olistolith – A large jurassic limestone block in Albian Conglomerates of the Bucegi Mountains, Southeast Carpathians, Romania." Geo-Eco-Marina No 24/2018 (December 31, 2018): 69–80. https://doi.org/10.5281/zenodo.2549578.

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The paper introduces and describes the Patrulius Olistolith, one of the largest exotic blocks (218 m long, 110 m wide and 55 m thick) embedded in Albian conglomerates from the Carpathian Bend area (southern part of Eastern Carpathians, Romania). The Albian conglomerates embedding the Patrulius Olistolith are deposits with homogeneous internal structure and poor sorting, features typical of debris flow sediments. Based on this character, it is considered that the Patrulius Olistolith transport was a gravitational collapse process and that it was transported as a very large c

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3

Bandopadhyay, P. C., and M. Ghosh. "Facies, Petrology and Depositional Environment of the Tertiary Sedimentary Rocks, Around Port Blair, South Andaman." Journal Geological Society of India 52, no. 1 (1998): 53–66. http://dx.doi.org/10.17491/jgsi/1998/520108.

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Abstract The Tertiary sedimentary rocks around Port Blair, South Andaman are classified into several facies and constraints on their formational environments are established. The Oceanic Pelagic Sediments ( OPS ) are made up of bedded chert and variegated shale facies. Radiolarian tests and microcrystalline quartz are major constituents of the chert. The variable mixture of silt-size quartz, feldspar, clay minerals, pyroclacstic fragments and outosized terrigenous clasts constitute the variegated shale. The OPS were formed in continental-margin orogenic basin through suspension settling and fi

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4

DE BORBA, ANDRÉ WEISSHEIMER, and ANA MARIA PIMENTEL MIZUSAKI. "Significado Tectônico dos Depósitos de Leques Aluviais da Formação Santa Bárbara (Eo-Paleozóico) na Região de Caçapava do Sul (RS, Brasil)." Pesquisas em Geociências 29, no. 1 (2002): 31. http://dx.doi.org/10.22456/1807-9806.19596.

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The alluvial fan deposits of Early Paleozoic Santa Bárbara Formation, located in Sul-rio-grandense Shield area of southernmost Brazil, have been analyzed here in terms of facies associations and tectonic significance. The investigated unit comprises conglomerates, sandstones, and siltstones, deposited probably under continental semi-arid climate conditions, in the post-collisional stages of Neoproterozoic Brasiliano/Pan-African Cycle. The location of the alluvial deposits suggests that the depositional locus of this sedimentary unit should probably consist of an individual and restricted fault

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Jipa, Dan C., and Cornel Olariu. "Significance of the Bucegi Conglomerate olistoliths in the Albian source-to-sink system from the Carpathian Bend basin in Romania." Interpretation 6, no. 1 (2018): T29—T37. http://dx.doi.org/10.1190/int-2017-0030.1.

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The presence of exotic blocks (or olistoliths) in sedimentary deposits is usually regarded as an indication of a deepwater slope environment. We evaluate olistoliths accumulated in shallow water at the upper edge of a slope setting using outcrop data. The study area is in the Bucegi Mountains in the southeast “bend” of the Carpathian Mountains in Romania. The studied deposits belong to the Bucegi Formation, a dominantly conglomerate succession of Albian age. The Lower Bucegi member has been accumulated as a large conglomerate submarine fan. The Upper Member forms a shelf-to-trench sedimentary

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6

Maslarević, Ljubinka, and Branislav Krstić. "Paleozoic continental slope deposits in the Stara Planina Mountains, Eastern Serbia." Geologica Balcanica 27, no. 1-2 (1997): 7–18. http://dx.doi.org/10.52321/geolbalc.27.1-2.7.

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Paleozoic (Devonian) marine sediments of the Inovo Formation in the Stara Planina Mountains consist of various metaclastic rock varieties: from conglomerates to siltstones and shales, composed of quartz, feldspar, rarely mica and abundant fragments of magmatic acid and basic rocks and intraclasts. On the basis of numerous typical sedimentary structures and textures, the clastics are interpreted as continental (lower or base of) slope deposits, resulting from a variety of mass gravity transports, viz.: debris flow, turbidity current, density-modified grainflow, and grain flow, intermittently co

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7

Alquiza, María J. P., Raúl M. Aviles, Pooja V. Kshirsagar, and Gabriela A. Zanor. "Evidence of a Large Debris Avalanche Event (22.0 Ma) from the Comondú Group on the Baja California Sur Peninsula, Mexico." Global Journal of Earth Science and Engineering 11 (August 27, 2024): 19–35. http://dx.doi.org/10.15377/2409-5710.2024.11.2.

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The morphological, sedimentological, and microtextural characteristics of Miocene debris avalanche deposits which extend from the Punta Coyote to the vicinity of the city of La Paz, were studied along the eastern of the Baja California Peninsula. The debris avalanche deposits studied include a mixture of angular mega blocks whose composition comes from the deposits that make up the Comondú Group: pre-Comondú (red sandstones and conglomerates with intercalated ignimbrites), the Upper Unit (brownish sandstones, shales, and conglomerate), and breccia, with a predominance of jigsaw cracks, injecti

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8

Cahyaningsih, Catur, Anjas Latif Ritonga, Shaury Aldila, and Zulhikmah Zulhikmah. "Lithofacies And Depositional Analysis Environment Of West Section Kolok Nan Tuo Village, Sawahlunto City, West Of Sumatera." Journal of Geoscience, Engineering, Environment, and Technology 3, no. 2 (2018): 128. http://dx.doi.org/10.24273/jgeet.2018.3.2.340.

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Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area is located at coordinates 00 ° 36'57,85 '' - 00 ° 37'56,89 '' latitude and 100 ° 42'10,08 '' 100 ° 43'47,28 " BT. The methods used in research is geological mapping. Based on the results of stratigraphic research area is divided into three units consist of: Crystalline Limestone Unit (SBGK) consisting Crystalline Limestone of and mudstone lithofacies, Conglomerate Units (SK) consists of polymic conglomerate and sandstones greywacke lithofacies while claystone Unit (SBL) lithofacies consists of claystone

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Korus, Jesse T., R. Matthew Joeckel, and Shane T. Tucker. "Genesis of giant, bouldery bars in a Miocene gravel-bed river: Insights from outcrop sedimentology, UAS-SfM photogrammetry, and GPR." Journal of Sedimentary Research 90, no. 1 (2020): 27–47. http://dx.doi.org/10.2110/jsr.2020.3.

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ABSTRACT Bedsets of bouldery intraformational conglomerate partly fill a narrow, 40-m-deep paleovalley in the Arikaree Group (lower Miocene) in Nebraska, USA. Entire bar successions are exposed in 3D, offering an opportunity to improve upon sedimentological models for coarse-grained fluvial deposits. Using unmanned aircraft, structure-from-motion photogrammetry, and ground-penetrating radar, we offer the first comprehensive assessment of the lithofacies and stratigraphic architecture of this regionally unique fluvial conglomerate. We interpret three lithofacies associations: (1) beds of chaoti

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10

Westrop, Stephen R., and Jennifer D. Eoff. "A Jiangshanian (Cambrian; Furongian) trilobite fauna from the Cow Head Group, western Newfoundland." Canadian Journal of Earth Sciences 60, no. 8 (2023): 1244–64. http://dx.doi.org/10.1139/cjes-2023-0036.

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Three shelf-derived boulders in debris flow conglomerates of the Downes Point Member of the Shallow Bay Formation of western Newfoundland yielded the first record of an Upper Cambrian shelf-margin trilobite fauna from the Elvinia Zone (Steptoean; Jiangshanian) in eastern North America. The fauna is dominated by the “catillicephalid” Buttsia Wilson, 1951, and resembles trilobite biofacies from microbial buildups in the Gatesburg Formation of Pennsylvania. It is correlative with the Cliffia latagenae Subzone, which is the youngest Steptoean biostratigraphic unit in the Gatesburg. New taxa are Tr

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Fülöp, Alexandrina. "Tuffaceous Conglomerates: Syn-Eruptive Resedimented Debris Flow and Hyperconcentrated Flow Deposits from the "Rhyodacitic Formation", Gutai Mountains, Eastern Carpathians." Studia Universitatis Babes-Bolyai, Geologia 46, no. 1 (2001): 81–98. http://dx.doi.org/10.5038/1937-8602.46.1.8.

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12

Abbasi, Iftikhar Ahmed, Abdulrahman Al-Harthy, and Yahya Khalifa Al-Subhi. "Late Cretaceous Sub-Marine Fan System in Batain Mélange Zone, the Fayah Formation in Northeastern Oman." Sultan Qaboos University Journal for Science [SQUJS] 19, no. 1 (2014): 64. http://dx.doi.org/10.24200/squjs.vol19iss1pp64-73.

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The Batain coast along the northeastern margin of Oman between Ra’s Al-Hadd and Ra’s Jibsch, is comprised of Permian to Late Cretaceous complex stratigraphy in a tectonically deformed area recording Permian rifting to late Cretaceous Tethys closure events. These rocks are thrust over Mesozoic and older autochthonous sedimentary cover in the form of a major nappe structure known as the Batain Nappe. The uppermost part of the Batain nappe is comprised of isolated outcrops of early Maastrichtian siliciclastic Fayah Formation dominated by gravity flow deposits. The Fayah Formation in the Jabal Fay

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Anderskouv, Kresten, and Finn Surlyk. "Upper Cretaceous chalk facies and depositional history recorded in the Mona-1 core, Mona Ridge, Danish North Sea." Geological Survey of Denmark and Greenland (GEUS) Bulletin 25 (December 29, 2011): 1–60. http://dx.doi.org/10.34194/geusb.v25.4731.

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The 331 m long core from the Mona-1 well in the Danish North Sea spans almost the entire Upper Cretaceous Chalk Group but only about 10% of Late Cretaceous time is represented. The succession comprises 14 facies representing pelagic deposition, turbidity flow, and mass-transport processes, including mudflow, debris flow, and slumping. Pelagic deposits vary mainly in terms of the concentration of siliciclastic material, the trace-fossil assemblage, and the presence or absence of primary sedimentary structures. Pelagic sedimentation was probably punctuated by the deposition of thin turbidites, a

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14

Wang, Zhihong, Zhihong Li, Zhijun Niu, et al. "Properties of Conglomerates from the Middle Ordovician Dongchong Formation and Its Response to the Yunan Orogeny in the Yunkai Area, South China." Minerals 13, no. 8 (2023): 998. http://dx.doi.org/10.3390/min13080998.

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The strata in the Shita Mountain, Yunkai region, are predominantly composed of clastic rocks with intercalated limestones. However, the precise stratigraphic age remains uncertain due to the scarcity of fossils. Previously, conglomerate layers in this region were considered indicative of the Yunan Orogeny during the Cambrian–Ordovician transition. However, through the identification of 12 lithofacies types and 5 lithofacies combinations in the conglomerate layers of the Shita Mountain section, it has been confirmed that these layers represent a fan delta depositional environment characterized

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15

ΚΑΤΗ, Μ. "Toe-of-slope facies of the Eocene limestones in Aghioi Pantes sequence (Zakynthos island, Western Greece)." Bulletin of the Geological Society of Greece 34, no. 2 (2018): 699. http://dx.doi.org/10.12681/bgsg.17304.

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The facies analysis of the Eocene limestones in the Aghioi Pantes section in central Zakynthos, part of the Preapulian carbonate sequence in the greater area, showed three megafacies types: a) graded beds, in which two main subtypes have been recognized, medium- to thin-bedded calcarenites-calcilutites and thick-bedded ruditic calcarenites, consisting mainly of redeposited shallow-water carbonate sands (mostly bioclasts of nummulites and echinoids); based on their sedimentary structures they have been interpreted as low density turbidite and high density turbidite (or sandy debris flows) depos

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16

ROBERTSON, ALASTAIR H. F., GILLIAN A. McCAY, KEMAL TASLI, and AŞEGÜL YILDIZ. "Eocene development of the northerly active continental margin of the Southern Neotethys in the Kyrenia Range, north Cyprus." Geological Magazine 151, no. 4 (2013): 692–731. http://dx.doi.org/10.1017/s0016756813000563.

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AbstractWe focus on an active continental margin related to northwards subduction during the Eocene in which sedimentary melange (‘olistostromes’) forms a key component. Maastrichtian – Early Eocene deep-marine carbonates and volcanic rocks pass gradationally upwards into a thick succession (<800 m) of gravity deposits, exposed in several thrust sheets. The lowest levels are mainly siliciclastic turbidites and debris-flow deposits. Interbedded marls contain Middle Eocene planktonic/benthic foraminifera and calcareous nannofossils. Sandstones include abundant ophiolite-derived grains. The hi

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17

Mahamidou, Mach houdou Aliou, and Hayrettin Koral. "SEDIMENTOLOGY OF THE PALEOGENE VOLCANICLASTIC GRAVITY FLOW DEPOSIT OF THE ULUKIŞLA FORMATION, SOUTH CENTRAL TÜRKIYE." Rudarsko-geološko-naftni zbornik 39, no. 4 (2024): 41–54. http://dx.doi.org/10.17794/rgn.2024.4.4.

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The sedimentological study of volcaniclastic successions is essential for gaining insight into the intricate geological history of the Ulukışla Basin in south Central Anatolia. This study, based on a comprehensive facies analysis of two representative stratigraphic sections, attempts to reconstruct the depositional conditions associated with volcaniclastic sedimentation within the Ulukışla Formation. Facies assemblages dominated by debris-flow deposits and turbidites provide clear evidence for deposition under deep-water conditions related to the proximal environment. Sedimentary characteristi

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18

Yan, Rizal* Pamungkas G. M. Alfend Rudyawan. "SEDIMENTATION OF THE CANTAYAN FORMATION IN SIRNASARI, BOGOR, WEST JAVA-INDONESIA." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 11 (2016): 349–59. https://doi.org/10.5281/zenodo.167071.

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The study area is located in Sirnasari area, Tanjungsari District, Bogor Regency, West Java- Indonesia and geographically located at coordinates 6<sup>o</sup>36'30"- 6<sup>o</sup>39'30" Longitude and 107<sup>o</sup>08'15 " - 107<sup>o</sup>10'30" Latitude. Stratigraphy of the study area consists of five lithology units (from old to young), they are mudstone unit, breccia unit, sandstone-claystone unit, Basalt unit, and Alluvial unit. The mudstone Unit was deposited in the inner to outer neritic environment dominated by wave shore face mechanism. The breccia and mudstone-sandstone units were ud

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Soták, Ján, Zuzana Pulišová, Dušan Plašienka, and Viera Šimonová. "Stratigraphic and tectonic control of deep-water scarp accumulation in Paleogene synorogenic basins: a case study of the Súľov Conglomerates (Middle Váh Valley, Western Carpathians)." Geologica Carpathica 68, no. 5 (2017): 403–18. http://dx.doi.org/10.1515/geoca-2017-0027.

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Abstract The Súľov Conglomerates represent mass-transport deposits of the Súľov-Domaniža Basin. Their lithosomes are intercalated by claystones of late Thanetian (Zones P3 - P4), early Ypresian (Zones P5 - E2) and late Ypresian to early Lutetian (Zones E5 - E9) age. Claystone interbeds contain rich planktonic and agglutinated microfauna, implying deep-water environments of gravity-flow deposition. The basin was supplied by continental margin deposystems, and filled with submarine landslides, fault-scarp breccias, base-of-slope aprons, debris-flow lobes and distal fans of debrite and turbidite

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20

Brehm, J. A. "The North Brae and Beinn Fields, Block 16/7a, UK North Sea." Geological Society, London, Memoirs 20, no. 1 (2003): 199–209. http://dx.doi.org/10.1144/gsl.mem.2003.020.01.17.

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AbstractNorth Brae is located in Block 16/07a, and was discovered in 1975 by Pan Ocean Oil Company. The field was purchased by Marathon Oil Company in 1976 and was delineated in the early 1980s. Production by gas recycling was commenced in 1988. Liquid reserves are estimated at 207 MMBBLs with recoverable dry gas of 800 BCF.The North Brae Field is one of three gas/condensate fields in the Brae fields area of the South Viking Graben in the UK Sector of the North Sea. The reservoir is part of a large turbidite and debris flow, submarine fan system that also encompasses the East Brae and Kingfish

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Kennedy, Kirsten, and Nicholas Eyles. "Subaqueous debrites of the Grand ConglomÉrat Formation, Democratic Republic of Congo: A model for anomalously thick Neoproterozoic: “Glacial” diamictites." Journal of Sedimentary Research 89, no. 10 (2019): 935–55. http://dx.doi.org/10.2110/jsr.2019.51.

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ABSTRACT Very thick (> 1 km) successions of matrix-supported conglomerates (diamictites) are a very distinctive component of many Neoproterozoic basins. Classically interpreted as glacially deposited sedimentary rocks, their thickness has been seen as requiring exceptional depositional conditions such as world-wide “panglacial” climates. The Neoproterozoic Grand Conglomérat Formation (GC) of Katanga Province, southeastern Democratic Republic of Congo, is a 1.8-km-thick diamictite succession hosting one of the world's largest stratiform copper deposits. Examination of more than 300 km of rec

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22

Bordy, Emese M., and Orsolya Sztanó. "Badenian (middle Miocene) continental paleoenvironment in the Novohrad–Nógrád Basin (Central Paratethys): a volcano-sedimentary record from the Páris-patak Valley in Hungary." Földtani Közlöny 151, no. 2 (2021): 159. http://dx.doi.org/10.23928/foldt.kozl.2021.151.2.159.

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Two levels of volcaniclastics, comprising conglomerates, sandstones and mudstones, are interbedded with upper middle Miocene (upper Badenian) andesite pyroclastics near the Hungarian-Slovakian border in the distal region of the Central Slovakian Neogene Volcanic Field. Based on the field sedimentological investigations, the facies of the volcaniclastics (e.g., lateral and vertical grain size changes, sedimentary structures, textures, clast composition), their geometry and field relationships are documented herein with the aim of reconstructing the depositional environment. The silica-cemented

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23

Johnstone, P. D., P. S. Mustard, and J. A. MacEachern. "The basal unconformity of the Nanaimo Group, southwestern British Columbia: a Late Cretaceous storm-swept rocky shoreline." Canadian Journal of Earth Sciences 43, no. 8 (2006): 1165–81. http://dx.doi.org/10.1139/e06-046.

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The Turonian to Santonian Comox Formation forms the basal unit of the Nanaimo Group. In the southern Gulf Islands of British Columbia, the Comox Formation nonconformably overlies Devonian metavolcanic and Jurassic intrusive rocks and is interpreted to reflect a rocky foreshore reworked by waves and ultimately drowned during transgression. The nonconformity displays a relief of metres to tens of metres. Basal deposits vary in thickness, as does the facies character along the several kilometres of paleoshoreline studied. In the study area, three distinct but related environments are expressed, t

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Redwood, Stewart D., David M. Buchs, and David Edward Cavell. "Submarine volcanic activity and giant amygdale formation along the Panama island arc as a precursor to 6000-year-old agate exploitation on Pedro González Island." Geological Magazine 159, no. 5 (2021): 673–88. http://dx.doi.org/10.1017/s0016756821001229.

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AbstractAn extensive deposit of agate occurs in Pedro González Island in the Gulf of Panama. Previous archaeological research showed that the agate was exploited between 6200 and 5600 cal BP to make stone tools found at the oldest known Preceramic human settlement in the Pearl Island archipelago. We constrain here the origin and geological context of the agate through a geological and geochemical study of the island. We show that it includes primary volcanic breccias, lavas, and tuffaceous marine deposits with sedimentary conglomerates and debris flow deposits, which we define as the Pedro Gon

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Coyle, Marylou, and D. F. Strong. "Geology of the Springdale Group: a newly recognized Silurian epicontinental-type caldera in Newfoundland." Canadian Journal of Earth Sciences 24, no. 6 (1987): 1135–48. http://dx.doi.org/10.1139/e87-110.

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Volcanic–sedimentary facies and structural relationships of the Silurian Springdale Group in west-central Newfoundland are indicative of a large collapse caldera with an area of more than 2000 km2. Basaltic flows, andesite flows and pyroclastic rocks, silicic ash-flow tuffs, high-silica rhyolite domes, and volcanically derived debris flows and breccias, fluviatile red sandstones, and conglomerates make up the group. It is bounded on the east and west by up-faulted basement rocks, which include gneisses, amphibolites, and pillow lavas, and in the northwest it unconformably overlies Lower Orodov

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Taylor, J. F., D. J. Kennedy, J. F. Miller, and J. E. Repetski. "Uppermost Cambrian slope deposits at Highgate Gorge, Vermont: a minor miscorrelation with major consequences for conodont- and trilobite-based chronocorrelation." Journal of Paleontology 65, no. 5 (1991): 855–63. http://dx.doi.org/10.1017/s0022336000037823.

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Uppermost Cambrian and lowest Ordovician slope deposits in Highgate Gorge, northwestern Vermont, yield a succession of conodont faunas (and a few associated trilobite species) similar to that observed in coeval North American carbonate-platform sequences. Decimeter-scale sampling of a 15-m-interval in two sections comprising thin-bedded limestone–shale rhythmites alternating with thick-bedded debris flow conglomerates yielded 60 trilobite specimens and more than 5,000 conodont elements from 48 productive horizons. The new biostratigraphic control does not support earlier claims that the lowest

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Qiao, Dan, Xiong Duan, and Zhiqiang Shi. "Early Triassic (Griesbachian) Deposits of High-Energy Events at the Northwestern Upper Yangtze Region, China." Minerals 13, no. 9 (2023): 1222. http://dx.doi.org/10.3390/min13091222.

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Following the latest Permian mass extinction (LPME), the ocean experienced turbulent conditions due to elevated temperatures during the Griesbachian (Early Triassic). These adverse conditions resulted in a prolonged delay in biotic recovery. However, the current understanding of the sedimentological responses of the ocean at that time to these adverse conditions remains incomplete. The Griesbachian harsh ocean conditions led to the formation of abnormal carbonate rocks (known as anachronistic facies) all around the world. These facies were influenced by a combination of environmental condition

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Devlin, William J. "Stratigraphy and sedimentology of the Hamill Group in the northern Selkirk Mountains, British Columbia: evidence for latest Proterozoic – Early Cambrian extensional tectonism." Canadian Journal of Earth Sciences 26, no. 3 (1989): 515–33. http://dx.doi.org/10.1139/e89-044.

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Three informal stratigraphic divisions are recognized in the uppermost Proterozoic – Lower Cambrian Hamill Group in the northern Selkirk Mountains of British Columbia. These informal divisions include a lower sandstone unit, a greenstone–graded-sandstone unit, and an upper sandstone unit. Both the lower and upper sandstone units display sedimentary characteristics that are uniform along strike and indicate a shallow-marine environment of deposition. As is typical of other exposures of the Hamil Group in southeastern British Columbia, the lower sandstone unit is coarser grained and more poorly

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Andrew, Joseph E. "Geologic map of Slate Range Crossing area, California, USA." Geosphere 18, no. 2 (2022): 728–29. http://dx.doi.org/10.1130/ges02341.1.

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Abstract This detailed geologic map and supplemental digital data set1 examine and demonstrate the complex Neogene–Quaternary deformation in the Slate Range Crossing area (California, USA) of the active dextral transtension of the Death Valley region and Walker Lane belt. This map integrates the late Cenozoic structures and geologic units with the Mesozoic geologic units and deformation as a data set to examine the controls on reactivation of older structures. These geologic data were collected to study pre-, syn-, and post-kinematic rocks to examine the deformation history of the area and to

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Bandyopadhyay, B. K., and Anupendu Gupta. "Submarine Debris-Flow Deposits from the Ordovician Mane Ting Formation in Tethyan Black Mountain Basin, Central Bhutan." Journal Geological Society of India 36, no. 3 (1990): 277–89. http://dx.doi.org/10.17491/jgsi/1990/360305.

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Abstract The rocks in the basin range in age from Early Ordovician to Devonian. Proximal sedimentation began with the deposition of an orthoquartzite-conglomerate lithofacies of the Nake Chu Formation. Rapid sedimentation coupled with quicker subsidence initiated a period of instability that led to the deposition of the distal facies sediments of the Mane Ting Formation characterised essentially by interbanded quartz wacke and shale with an input of andesite. A number of conformable interbedded para-conglomerate beds, identified as submarine debris flow deposits, occur within this Mane Ting Fo

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Choe, Moon-Young, Young-Kwan Sohn, Hyung-Rae Jo, and Yea-Dong Kim. "The Lago Sofia Conglomerate : Debris Flow to Hyperconcentrated Flow Deposits in a Cretaceous Submarine Channel, Southern Chile." Ocean and Polar Research 24, no. 3 (2002): 289–300. http://dx.doi.org/10.4217/opr.2002.24.3.289.

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Buskirk, Bret L., Joanne Bourgeois, Herbert W. Meyer, and Elizabeth A. Nesbitt. "Freshwater molluscan fauna from the Florissant Formation, Colorado: paleohydrologic reconstruction of a latest Eocene lake." Canadian Journal of Earth Sciences 53, no. 6 (2016): 630–43. http://dx.doi.org/10.1139/cjes-2015-0168.

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The freshwater molluscan assemblage from the uppermost Eocene Florissant Formation (34.07 ± 0.10 Ma), Colorado, USA, provides a reliable proxy in reconstructing past ecology and environmental characteristics of ancient Lake Florissant. In particular, stable-isotope analyses of aragonitic shell material contribute to our understanding of the paleohydrologic history of this ancient lake. Re-examination of molluscan taxonomy in the middle shale and caprock conglomerate (informal) units produces three sphaeriid bivalves (family Sphaeriidae, genus Sphaerium) and two pulmonate gastropod genera (fami

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Lane, N. Gary, Johnny A. Waters, Christopher G. Maples, Sara A. Marcus, and Z. T. Liao. "A camerate-rich Late Carboniferous (Moscovian) crinoid fauna from volcanic conglomerate, Xinjiang, People's Republic of China." Journal of Paleontology 70, no. 1 (1996): 117–28. http://dx.doi.org/10.1017/s0022336000023155.

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A low-diversity camerate-rich crinoid fauna from the Qijiagou Formation, Taoshigo Valley near Turpan, Xinjiang-Uygar Autonomous Region, China was collected during field work in May, 1993. The crinoid fauna is dominated by species of Platycrinites. Other camerate crinoids include a species in the Paragaricocrinidae, Actinocrinites, a hexacrinitid, and an acrocrinoid. The only other non-North American occurrence of this latter family is Springeracrocrinus from the Moscovian of Russia. In addition to the camerates, there are several advanced cladid inadunates more typical of Upper Carboniferous c

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Lamsal, Sudip, Nabaraj Sapkota, Arjun Bhandari, Ishor Gyanwali, Kabi Raj Paudyal, and Lalu Paudel. "Geological investigation of river terraces along the Modi Khola valley, Parbat district, western Nepal Lesser Himalaya." Journal of Nepal Geological Society 53 (December 31, 2017): 31–37. http://dx.doi.org/10.3126/jngs.v53i0.23798.

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Fluvial terraces are remnants of the former floodplain of a stream or river. Wide river valley with spectacular terraces are the well-known places of the Himalaya because of their unique morphology and history of origin. The Modi Khola and Kali Gandaki valleys in west Nepal, Lesser Himalaya are characterized by a number of spectacular river terraces. In the present study, the river terraces along the Modi Khola valley were mapped at 1:25,000 scale and their lithological and sedimentological characteristics were investigated. The river terraces along the Modi Khola are distributed in at least t

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Van der Stijl, Frank W., and Greg Z. Mosher. "The Citronen Fjord massive sulphide deposit, Peary Land, North Greenland: discovery, stratigraphy, mineralization and structural setting." Geology of Greenland Survey Bulletin 179 (July 29, 1998): 1–44. http://dx.doi.org/10.34194/ggu-bulletin.v179.6270.

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The Citronen Fjord massive sulphide deposit in the Lower Palaeozoic of North Greenland is the world's most northerly base metal mineralization. Since discovery in 1993, it has been intensively investigated by geological and geophysical surveys, and by drilling. The deposit is generally flat lying with a thickness up to 50 m; it extends from outcrop level to depths of 300 m. Three main stratiform sulphide sheets occur within a 200 m thick stratigraphic sequence; these are composed of massive and bedded pyrite with variable amounts of sphalerite and minor galena. The proven mineralization

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Van der Stijl, Frank W., and Greg Z. Mosher. "The Citronen Fjord massive sulphide deposit, Peary Land, North Greenland: discovery, stratigraphy, mineralization and structural setting." Geology of Greenland Survey Bulletin 179 (July 29, 1998): 1–44. http://dx.doi.org/10.34194/ggub.v179.6270.

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The Citronen Fjord massive sulphide deposit in the Lower Palaeozoic of North Greenland is the world's most northerly base metal mineralization. Since discovery in 1993, it has been intensively investigated by geological and geophysical surveys, and by drilling. The deposit is generally flat lying with a thickness up to 50 m; it extends from outcrop level to depths of 300 m. Three main stratiform sulphide sheets occur within a 200 m thick stratigraphic sequence; these are composed of massive and bedded pyrite with variable amounts of sphalerite and minor galena. The proven mineralization

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Khor, Wei Chung, Kamal Roslan Mohamed, Che Aziz Ali, Muhammad Ashahadi Dzulkafli, and Jasmi Ab Talib. "The Mangking Sandstone Formation of Kuala Tahan to Kampung Bantal: Sedimentology and Depositional Environment." Sains Malaysiana 52, no. 11 (2023): 3027–44. http://dx.doi.org/10.17576/jsm-2023-5211-02.

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The Mangking Sandstone of Tembeling Group in the Kuala Tahan region records part of the infill of the continental extensional basin formed at the end of the Triassic. Described facies of this formation include sandy matrix conglomerate (that shows evidence of pseudoplastic debris flow and traction-dominated deposition), sandstones with trough, tabular and horizontal stratification, laminated and massive mudstone. Groups of associated facies are arranged into six distinct architectural elements (channel, sandy bedform, crevasse splay, laminated sand sheet, downstream and lateral accretion and f

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Saha, Sudip, Mrinal Kanti Roy, and A. H. M. Selim Reza. "Lithofacies Analysis of the Tista River Deposits, Rangpur, Bangladesh." Journal of The Indian Association of Sedimentologists 38, no. 2 (2021): 3–14. http://dx.doi.org/10.51710/jias.v38i2.113.

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Eight (8) distinct lithofacies within the fluviatile reach of the Tista River have been recognized by the detailed study of the sediments as exposed along the river bank and river bars. Genetically, the matrix-supported conglomerate (Gms), massive sand (Sm), Trough cross stratified sand (St), planar cross stratified sand (Sp), ripple laminated sand (Sr) comprise the channel deposits whereas, the ripple laminated sand (Sr), parallel laminated sand (Sh), clay with silt (Fl) and massive Clay (Fm) represent overbank fine deposits. The channel deposits were laid down under relatively high energy co

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Cook, Y. A. "Precambrian rift-related magmatism and sedimentation, south Victoria Land, Antarctica." Antarctic Science 19, no. 4 (2007): 471–84. http://dx.doi.org/10.1017/s0954102007000612.

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AbstractPrecambrian continental extension is described in detail for the first time in the Victoria Land segment of the Transantarctic Mountains and is comparable with plume related intercontinental rifting of the Afar area, Africa. The Baronick Formation comprises igneous-derived conglomerate, marble and volcanic to sub-volcanic igneous layers. Volcanic and carbonate horizons were eroded in a fluvial or marine environment and provided debris for mass flow and slump deposits which formed in a marginal marine basin in the Precambrian. Clasts in these deposits include basalt, trachyte and comend

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Brault, Nicolas, Francois Guillocheau, Jean-Noel Proust, et al. "Le systeme fluvio-estuarien Pleistocene moyen-superieur de Penestin (Morbihan); une paleo-Loire?" Bulletin de la Société Géologique de France 172, no. 5 (2001): 563–72. http://dx.doi.org/10.2113/172.5.563.

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Abstract In France, the basement domains are incised by large fluvial valley networks. Recent studies [Lefebvre et al., 1994; Bonnet, 1998; Lautridou et al., 1999; Antoine et al., 2000; Bonnet et al., 2000] show that these networks were cut during the Pleistocene in response to the uplift of western Europe combined with a fall of the base level [Haq et al., 1987; Shackleton, 1987]. The aim of this article is to study one of the rare Pleistocene sedimentary accumulations preserved in the Armorican Massif, the Penestin fluvial channel system in order to: (1) reconstitute the paleogeomorphologica

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Mustoe, George E. "Cyclic sedimentation in the Eocene Allenby Formation of south-central British Columbia and the origin of the Princeton Chert fossil beds." Canadian Journal of Earth Sciences 48, no. 1 (2011): 25–43. http://dx.doi.org/10.1139/e10-085.

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Extensive deposits of Eocene conglomerate, sandstone, shale, and sub-bituminous coal occur within a half-graben at Princeton, British Columbia. These strata comprise ∼2000 m of fluvial sediment interbedded with tephra and volcanic flows. Near the southeast margin of the basin, ∼200 m of rhythmically bedded strata are exposed along the Similkameen River. Cyclic deposition resulted from repeated episodes of hydrologic and topographic change related to seismic activity along the Boundary Fault on the east flank of the Princeton Basin, where Allenby Formation sediments are juxtaposed against metam

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Sarker, Md Nuruddin. "Gravel Deposits Of Dauki-Piyain River Bed And Surrounding Flood Plains: A Case Study." Journal of the Asiatic Society of Bangladesh, Science 41, no. 2 (2015): 225–32. http://dx.doi.org/10.3329/jasbs.v41i2.46206.

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The Dauki-Piyain river is the major source of gravels in Jaflong area which is located on the alluvial plain south of the Khasi-Jainta Hills. Jaflong gravels comprise quartzite, granite, gneiss, amphibolite, basalt, sandstone and conglomerate. The gravels are mostly fresh and hard and can be used as good construction materials. The deposition of gravels is controlled by the frequency and intensity of water-flow in the Dauki-Piyain river forming the Jaflong quarry. The Dauki river is constantly changing its course. Controlling the river course and keeping its tract clear from debris will make t

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ZOUHEIR, TARIQ, ADRIAN P. HUNT, ABDELKBIR HMINNA, HAFID SABER, JOERG W. SCHNEIDER, and SPENCER G. LUCAS. "LAURUSSIAN-ASPECT OF THE COPROLITE ASSOCIATION FROM THE UPPER TRIASSIC (CARNIAN) OF THE ARGANA BASIN, MOROCCO." Palaios 38, no. 6 (2023): 281–303. http://dx.doi.org/10.2110/palo.2022.022.

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ABSTRACT A large collection of vertebrate coprolites derives from a debris flow conglomerate in the Upper Triassic Irohalene Member (Carnian) of the Timezgadiouine Formation, northern Argana Basin, Morocco. The coprolites are classified into 14 different morphotypes (MA to MN) based on their size, shape, and surface texture that are divided into three groups: striated coprolites; spiral and scroll-like coprolites; and non-spiral coprolites lacking striations. The great variety of morphotypes suggests the coprolites correspond to a variety of terrestrial and aquatic carnivorous producers. The c

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Das, Subhasish, and Santansua Manta. "Fluidized Sediment Movements and Deposition - A case study from Bisrampur, Singhbhum Dt., Eastern India." Journal Geological Society of India 45, no. 3 (1995): 301–10. http://dx.doi.org/10.17491/jgsi/1995/450307.

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Abstract Critical studies of a part of Singhbhum basin around Bisrampur, Singhbhurn district, Bihar, show that the metasediments (considered to belong to the Dhanjori Group) lie unconformably above the Singhbhurn Granite. However a few tongues of the granite that occur within the metasediments have been explained as thrust slices of the basement within the cover rocks. Though three phases of deformation have been recorded here, and the general outcropgattern has been largely controlled by the second phase of deformation, there has not been any marked change in the spatial disposition of the co

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Khuong, Hung The, and Tra Thuy Thi Lai. "Studies on lithofacies sequences in the Hoanh Bo basin, Quang Ninh province by using Markov chain model and Entropy function." Journal of Mining and Earth Sciences 63, no. 1 (2022): 15–26. http://dx.doi.org/10.46326/jmes.2022.63(1).02.

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The succession of lithofacies in the Dong Ho and Tieu Giao formation's Hoanh Bo basin was statistically analyzed using the modified Markov chain model and the function of Entropy. Based on the field definitions, petrographic investigation, and their borehole logs, the lithofacies study was carried out to determine the sediment deposition system and the deposition environment. Seventeen sub - lithofacies organized within the succession are recognized in three lithofacies associations. The analysis result of the Markov chain and chi-square or X2 test indicates that the deposition of the lithofac

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Navarro, Lilian, and R. William C. Arnott. "Stratal architecture and evolution of a slope mass-transport complex, Isaac Formation, Neoproterozoic Windermere Supergroup, southern Canadian Cordillera, British Columbia, Canada." Geological Society, London, Special Publications 477, no. 1 (2018): 265–76. http://dx.doi.org/10.1144/sp477.24.

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AbstractDetailed sedimentological and stratigraphic analyses of a c. 1500 m thick, siliciclastic-dominated slope succession in the Neoproterozoic Isaac Formation at the Castle Creek study area (southern Canadian Cordillera) reveals the occurrence of four well-preserved mass-transport complexes (MTCs) composed principally of slide/slump and debris-flow deposits. The stratigraphically lowest of these complexes is about 60 m thick and crops out for >2.5 km laterally, consisting of slide and debrite. The slide has an irregular erosive base with ramp-and-flat geometry. This is overlain locally b

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Bendella, Mohamed, Madani Benyoucef, Amine Cherif, and Miloud Benhamou. "Ichnology and sedimentology of the “Argiles de Saïda” formation (Callovo-Oxfordian) of the Djebel Brame (Tiaret, Algeria)." Bulletin de la Société Géologique de France 182, no. 5 (2011): 417–25. http://dx.doi.org/10.2113/gssgfbull.182.5.417.

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Abstract The focus of this note is an ichnological study of the “Argiles de Saïda” formation (Callovo-Oxfordian) in the Djebel Brame, a region representing the eastern extremity of the Tlemcenian domain and marked by rhythmic clay-sandstone sedimentation. From a lithostratigraphic viewpoint, the formation is composed of two units with a distinct sequential organization and trace fossil content. These deposits are characterized by weak to moderate bioturbation, eleven ichnogenera were found: Bergaueria, Chondrites, Diplichnites, Megagrapton, Neonereites, Nereites, Ophiomorpha, Palaeophycus, Rh

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Ozulu, George Uchebike, Anthony Uwaoma Okoro, and Evangeline Njideka Onuigbo. "Sedimentary facies and environments of the sedimentary fill of Southern Bida Basin, Nigeria." Global Journal of Geological Sciences 19, no. 1 (2021): 53–74. http://dx.doi.org/10.4314/gjgs.v19i1.5.

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Six lithofacies were identified in the Lokoja Formation, Southern Bida Basin: fanglomerate/ conglomerate lithofacies (Gmc), fine to coarse-grained ferruginized weakly cross-bedded, pebbly sandstone lithofacies (Scx), fine to coarsegrained sandstone lithofacies (Sfc), silty claystone lithofacies (Csm), siltstone lithofacies (Slt) and lateritic ironstone lithofacies (Ilt). These were grouped into three lithofacies associations viz: alluvial fan, braided river channel, floodplain lithofacies association. Nine lithofacies were identified in the Ahoko Formation. These are: black-dark grey carbonace

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Trop, Jeffrey M., Kenneth D. Ridgway, Arthur R. Sweet, and Paul W. Layer. "Submarine fan deposystems and tectonics of a Late Cretaceous forearc basin along an accretionary convergent plate boundary, MacColl Ridge Formation, Wrangell Mountains, Alaska." Canadian Journal of Earth Sciences 36, no. 3 (1999): 433–58. http://dx.doi.org/10.1139/e98-103.

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Analysis of Upper Cretaceous sedimentary and volcanic strata in the Wrangell Mountains of south-central Alaska provides an opportunity to study the tectonics, depositional systems, and provenance of a forearc basin that developed along an accretionary convergent plate boundary. New data from the 1150 m thick MacColl Ridge Formation indicate that deposition occurred during the Campanian on a coarse-grained submarine fan that was derived from an uplifted allochthonous terrane exposed in the hanging wall of a fault system that separated the forearc basin from the subduction complex. New age contr

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Grazul, Kendall, Jacqueline Huntoon, and Jennifer O’Keefe. "Stratigraphy and fossil plants from the Cutler Formation (Late Paleozoic) and their paleoclimatic implications, eastern Paradox Basin, Colorado." Geology of the Intermountain West 2 (January 1, 2015): 9–27. http://dx.doi.org/10.31711/giw.v2.pp9-27.

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Exposures of the late Paleozoic Cutler Formation, near the town of Gateway, Colorado, have traditionally been interpreted as the product of alluvial-fan deposition along the western flank of the Uncompahgre uplift and within the easternmost portion of the Paradox Basin. The Paradox Basin formed between the western margin of the Uncompahgre uplift, a segment of the Ancestral Rocky Mountains, and the western paleoshoreline of the North American portion of Pangea. This part of Pangea is commonly thought to have experienced semi-arid to arid conditions and warm temperatures during the Pennsylvania

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