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Journal articles on the topic 'Deltaic deposition'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Van Yperen, Anna E., John M. Holbrook, Miquel Poyatos-Moré, and Ivar Midtkandal. "Coalesced Delta-front Sheet-like Sandstone Bodies from Highly Avulsive Distributary Channels: The Low-accommodation Mesa Rica Sandstone (Dakota Group, New Mexico, U.S.A.)." Journal of Sedimentary Research 89, no. 7 (2019): 654–78. http://dx.doi.org/10.2110/jsr.2019.27.

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Abstract Low-accommodation deltaic systems are often challenging to interpret due to their condensed, low-gradient nature, which often results in extensive, sheet-like sandstone bodies. As a result, detailed studies of such systems are scarce, and their internal depositional architecture is still poorly understood. We analyze one such system, the Cenomanian deltaic Mesa Rica Sandstone (Dakota Group), which was deposited in the Western Interior Seaway, in east-central New Mexico, USA. A > 20-km-long escarpment, subparallel to the main delta progradation direction, allows a detailed analysis

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Strømsøyen, Ingine, Edwin Schomacker, Bo Søderstrøm, and Bärbel M. T. Waagan. "The Bight Basin: a tale of three deltaic megasequences." APPEA Journal 59, no. 2 (2019): 952. http://dx.doi.org/10.1071/aj18213.

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The Bight Basin developed during the Jurassic and Cretaceous in response to repeated periods of extension and thermal cooling leading up to, and following, the onset of seafloor spreading between present-day Australia and Antarctica. The bulk of the resulting sedimentary basin fill includes up to 15 km of Middle Jurassic–recent sediments comprising three deltaic megasequences: White Pointer, Tiger and Hammerhead. High quality seismic 3D data have enabled detailed mapping of the megasequences, evaluation of the nature of infill and assessment of implications for hydrocarbon prospectivity. The C

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MacLaurin, Catherine I., J. Brian Mahoney, James W. Haggart, J. Russell Goodin, and Peter S. Mustard. "The Jackass Mountain Group of south-central British Columbia: depositional setting and evolution of an Early Cretaceous deltaic complex1This article is one of a series of papers published in this Special Issue on the theme of New insights in Cordilleran Intermontane geoscience: reducing exploration risk in the mountain pine beetle-affected area, British Columbia.2Earth Science Sector (ESS) Contribution 20100280." Canadian Journal of Earth Sciences 48, no. 6 (2011): 930–51. http://dx.doi.org/10.1139/e11-035.

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The Lower Cretaceous Jackass Mountain Group of southwestern British Columbia records a complex history of deltaic and proximal marine sedimentation in a tectonically active area of the Canadian Cordillera. Two Jackass Mountain Group successions, exposed in the Camelsfoot Range and Chilko Lake regions and separated by ∼125 km across the northwest–southeast-trending Yalakom fault, provide details of stratigraphy, sedimentology, petrography, and geochemistry of the group. Restoring dextral movement across the Yalakom fault indicates that these locales were adjacent to one another during depositio

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Klauser-Baumgärtner, Detlef, Thomas Reichel, and John-Are Hansen. "Regional paleodepositional environment of the Cretaceous in the Great Australian Bight – a support for frontier exploration." APPEA Journal 59, no. 2 (2019): 891. http://dx.doi.org/10.1071/aj18055.

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To reveal the development of the depositional environment in the Great Australian Bight, regional and high-resolution 3D-seismic interpretation and palynological evidence from well data was integrated with tectonic plate- and paleo topographical-reconstructions. Results from that work explain the drainage patterns and changes in the sedimentary evolution. A maximum transgression at the Cenomanian–Turonian boundary causes the deposition of the expected main source rock interval at the base of the Tiger mega-sequence. This is supported by Integrated Ocean Drilling Program wells (2017), asphalite

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Plink-Björklund, Piret. "Effects of tides on deltaic deposition: Causes and responses." Sedimentary Geology 279 (November 2012): 107–33. http://dx.doi.org/10.1016/j.sedgeo.2011.07.006.

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6

Rowe, Harry, Xiangzeng Wang, Bojiang Fan, et al. "Chemostratigraphic insights into fluvio-lacustrine deposition, Yanchang Formation, Upper Triassic, Ordos Basin, China." Interpretation 5, no. 2 (2017): SF149—SF165. http://dx.doi.org/10.1190/int-2016-0121.1.

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A chemostratigraphic study of a 300 m long core recovered from the southeastern central Ordos depocenter reveals thick ([Formula: see text]) intervals of fine-grained, organic-rich lacustrine strata, interpreted to represent deepwater deposition under meromictic conditions (incomplete watermass overturn) during lake highstand phases, interspersed with thick (10–30 m) intervals of arkosic sandstones, reflective of fluvio-deltaic deposition during lake lowstand phases. Along with elevated concentrations of %Al, traditionally a proxy for clay content, maximum total-organic-carbon (TOC) values in

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Rainbird, R. H., and J. A. Donaldson. "Nonglaciogenic deltaic deposits in the early Proterozoic Gowganda Formation, Cobalt Basin, Ontario." Canadian Journal of Earth Sciences 25, no. 5 (1988): 710–24. http://dx.doi.org/10.1139/e88-067.

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The Gowganda Formation in the eastern part of the Cobalt Basin comprises the Coleman Member and the conformably overlying Firstbrook Member. The Firstbrook Member differs from the Coleman Member in that its lithofacies display (i) marked lateral continuity, (ii) abundant diagenetic red colouration, (iii) evidence of tidal deposition, and (iv) a lack of glaciogenic features. The Firstbrook Member is here divided into a mud-dominated lower facies, a silt-dominated middle facies, and sand-dominated upper facies. These are respectively equated with the prodelta, delta slope, and delta foreslope su

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MacEachern, James A., and Kerrie L. Bann. "The Phycosiphon Ichnofacies and the Rosselia Ichnofacies: Two new ichnofacies for marine deltaic environments." Journal of Sedimentary Research 90, no. 8 (2020): 855–86. http://dx.doi.org/10.2110/jsr.2020.41.

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ABSTRACT Seilacherian Ichnofacies have been established, to date, for characterizing relatively stable depositional settings. Environments characterized by temporally and spatially varying physico-chemical stresses, however, have languished and been described ichnologically in the context of their “departures” from the archetypal expressions of otherwise ambient environments. Correspondingly, discrimination between shoreface and marine deltaic deposits have been addressed mainly by identifying variations in the individual trace-fossil suites without an over-arching ichnological model. Based on

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Young, R. W., K. L. White, and D. M. Price. "Fluvial deposition on the Shoalhaven deltaic plain, Southern New South Wales." Australian Geographer 27, no. 2 (1996): 215–34. http://dx.doi.org/10.1080/00049189608703169.

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Stilwell, Jeffrey D., Richard H. Levy, Rodney M. Feldmann, and David M. Harwood. "On the rare occurrence of Eocene callianassid decapods (Arthropoda) preserved in their burrows, Mount Discovery, East Antarctica." Journal of Paleontology 71, no. 2 (1997): 284–87. http://dx.doi.org/10.1017/s0022336000039184.

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Callianassid fossils, preserved within their burrows, collected from Mount Discovery, East Antarctica, provide the first such occurrence in Antarctica as well as evidence for deposition in a shallow marine environment distal to a deltaic system. The age of the specimens, based upon associated dinoflagellate cysts, is late early to middle Eocene.

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Gouw, M. J. P., and G. Erkens. "Architecture of the Holocene Rhine-Meuse delta (the Netherlands) - A result of changing external controls." Netherlands Journal of Geosciences - Geologie en Mijnbouw 86, no. 1 (2007): 23–54. http://dx.doi.org/10.1017/s0016774600021302.

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AbstractThe Holocene Rhine-Meuse delta is formed under the influence of sea-level rise, tectonics, and variations in discharge and sediment supply. This paper aims to determine the relative importance of these external controls to improve our understanding of the evolution of the Rhine-Meuse fluvio-deltaic system. To do this, the geological and lithological composition of the fluvio-deltaic wedge has to be known in detail, both in space and time. This study presents five cross-valley sections in the Holocene Rhine-Meuse delta, based on almost 2000 shallow borings. Over 130 14C dates provide de

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MARTINSEN, OLE J. "Fluvial, inertia-dominated deltaic deposition in the Namurian (Carboniferous) of northern England." Sedimentology 37, no. 6 (1990): 1099–113. http://dx.doi.org/10.1111/j.1365-3091.1990.tb01848.x.

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Mude, Shyam Narayan, Shyam Yawale, and Vishal Choudhari. "Sedimentological and Geochemical Charectesization of Manaveli and Cuddalore Formations, Puducherry Basin, India." Journal of The Indian Association of Sedimentologists 37, no. 2 (2020): 115–30. http://dx.doi.org/10.51710/jias.v37i2.112.

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Sedimentological and Geochemical Charectesization of Manaveli and Cuddalore Formations, Puducherry Basin, India   Shyam N. Mude, Shyam Yawale and Vishal Choudhari   Department of Geology, Fergusson College (Autonomous), Pune- 411004, India Email: shyam.mude@fergusson.edu; shyammude25@yahoo.co.in  Abstract: The lithostratigraphically rocks of Puducherry basin (Sub-basin of Cauvery Basin) have been classified as Valudavur, Mettuveli, Karasur, Manaveli, Cuddalore formations in ascending order of deposition. The sedimentological and geochemical studies of

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SWENSON, J. B., V. R. VOLLER, C. PAOLA, G. PARKER, and J. G. MARR. "Fluvio-deltaic sedimentation: A generalized Stefan problem." European Journal of Applied Mathematics 11, no. 5 (2000): 433–52. http://dx.doi.org/10.1017/s0956792500004198.

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We present a model of sedimentation in a subsiding fluvio-deltaic basin with steady sediment supply and unsteady base level. We demonstrate that mass transfer in a fluvio-deltaic basin is analogous to heat transfer in a generalized Stefan problem, where the basin's shoreline represents the phase front. We obtain a numerical solution to the governing equations for sediment transport and deposition in this system via an extension of a deforming-grid technique from the phase-change literature. Through modification of the heat-balance integral method, we also develop a semi-analytical solution, wh

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Ausseil-Badie, Josiane, J. Paul Barusseau, Cyr Descamps, E. H. Salif Diop, Pierre Giresse, and Mieczyslaw Pazdur. "Holocene deltaic sequence in the Saloum estuary, Senegal." Quaternary Research 36, no. 2 (1991): 178–94. http://dx.doi.org/10.1016/0033-5894(91)90024-y.

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AbstractThe 2250 km2 Saloum delta, south of Dakar, Senegal, consists of a Holocene sedimentary sequence deposited during five evolutionary stages: submerged postglacial ria, funnel-like estuary, barred estuary, cuspate delta, and reverse estuary. The passage from one stage to another was marked by the deposition of sedimentary units consisting of shelly sands, silty or sandy clays, and an extensive thick green mud. Muds in the lower strata, dating between 6130 and 3500 yr B.P., were deposited on a subtidal mudflat, while fine sands and silty clays characterize intertidal deposits. A drastic ch

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Melehan, Sean, Chrysanthos Botziolis, Angelos G. Maravelis, et al. "Sedimentology and Stratigraphy of an Upper Permian Sedimentary Succession: Northern Sydney Basin, Southeastern Australia." Geosciences 11, no. 7 (2021): 273. http://dx.doi.org/10.3390/geosciences11070273.

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This study integrates sedimentological and stratigraphic insights into the Upper Permian sedimentary rocks of the Wittingham, Tomago and Newcastle Coal Measures in the Northern Sydney Basin, Australia. Facies analysis documented fifteen facies that belong to seven facies associations. These facies associations correspond to different depositional environments and sub-environments including prodelta, delta-front, upper, lower delta-plain and fluvial. The stratigraphic development points to a shallowing upward trend and is reflected with fluvial deposits sitting on top of the deltaic deposits. T

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Olsen, Torben, and Gunver Krarup Pedersen. "The occurrence of marine fossils in the Upper Cretaceous deltaic sediments at Pautut, central West Greenland." Bulletin of the Geological Society of Denmark 39 (December 20, 1991): 111–22. http://dx.doi.org/10.37570/bgsd-1991-39-03.

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Finds of Upper Cretaceous marine macrofossils from Pautut have been reported since 1874. Subsequent investigations have led to contrasting views concerning the stratigraphic position of the fossils, the general depositional environment, and the amount of marine influence. During a brief visit to Pautut in the summer of 1989, a section of the exposed sediments was described. The sediments can be divided into 4 facies associations reflecting deposition on a prograding delta front, in distributary channels, on a subaerial to limnic delta plain and on an abandoned delta lobe during a marine transg

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Sun, Zhuyou, Gang Li, and Yong Yin. "The Yangtze River Deposition in Southern Yellow Sea during Marine Oxygen Isotope Stage 3 and its Implications for Sea-Level Changes." Quaternary Research 83, no. 1 (2015): 204–15. http://dx.doi.org/10.1016/j.yqres.2014.08.008.

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AbstractThe depositional history of the lower Yangtze River and sea-level changes during Marine Oxygen Isotope Stage (MIS) 3 was established using three long drill cores from the northern Yangtze deltaic plain and southern Yellow Sea by using sedimentary analysis and AMS14C dates. Voluminous channel deposits of the lower Yangtze River in MIS 3 were found from the northern deltaic plain and offshore area, with a thickness of over 30 m. The thick channel deposits are characterized by massive medium-to-fine sand deposits with sporadic tidal influence. During MIS 3, the Yangtze River appears to ha

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Atta-Peters, D., C. I. Agama, D. K. Asiedu, and E. Apesegah. "Palynology, Palynofacies and Palaeoenvironments of Sedimentary Organic Matter from Bonyere - 1 Well, Tano Basin, Western Ghana." International Letters of Natural Sciences 5 (November 2013): 27–45. http://dx.doi.org/10.18052/www.scipress.com/ilns.5.27.

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Palynofacies analyses from Bonyere Well No. 1 in the Tano basin, western Ghana has revealed five palynofacies associations (I – V) based on the percentage relative abundances of the sedimentary organic matter (SOM). The palynofacies associations reflect deposition in a fluvio-deltaic (oxic) environment, a distal dysoxic-anoxic shelf environment, a proximal dysoxic-suboxic environment, nearshore (oxic) and a fluvio-deltaic/nearshore environment with high oxygen levels and low preservation rates respectively. Based on marker palynomorphs, Campanian – Maastrichtian age has been assigned to sedime

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Abbott, Steve, Claire Orlov, George Bernardel, et al. "Stratigraphic and structural architecture across the central North West Shelf – implications for Triassic petroleum systems." APPEA Journal 59, no. 2 (2019): 832. http://dx.doi.org/10.1071/aj18154.

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The Triassic succession in the Roebuck Basin and parts of the adjacent sub-basins is the subject of a regional mapping program at Geoscience Australia that addresses stratigraphic and structural aspects of exploration risk. Seismic horizons of regional significance are integrated into a new tectonostratigraphic framework that also includes lithostratigrapy, gross depositional facies and tectonic extension phases. The main Triassic depocentre extends over the Beagle Sub-basin and north-east Exmouth Plateau, with a re-entrant into the Bedout Sub-basin. A smaller north-east oriented depocentre is

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Walley, C. D. "Depositional history of southern Tunisia and northwestern Libya in Mid and Late Jurassic time." Geological Magazine 122, no. 3 (1985): 233–47. http://dx.doi.org/10.1017/s0016756800031447.

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AbstractThe good exposures of virtually undeformed Callovian and Oxfordian strata along the Djeffara escarpment of southern Tunisia and northwestern Libya have allowed analysis of regional depositional history during this time.A number of lithostratigraphic problems are considered. In Tunisia, the Foum Tatahouine Formation is subdivided into members and in Libya some of the stratigraphic issues are clarified. A correlation between the two sequences is proposed. The widely claimed aeolian origin for the Libyan Chameau Mort Sandstone is rejected.The depositional patterns of the Callovian and Oxf

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Christiansen, E. A., and E. Karl Sauer. "Stratigraphy and structure of a Late Wisconsinan salt collapse in the Saskatoon Low, south of Saskatoon, Saskatchewan, Canada: an update." Canadian Journal of Earth Sciences 38, no. 11 (2001): 1601–13. http://dx.doi.org/10.1139/e01-038.

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The Saskatoon Low is a collapse structure that formed as a result of dissolution of salt from the Middle Devonian Prairie Evaporite Formation. In this study, the collapse has affected the Upper Cretaceous Lea Park, Judith River, and Bearpaw formations of the Montana Group; the Early and Middle Pleistocene Mennon, Dundurn, and Warman formations of the Sutherland Group; and the Late Pleistocene Floral, Battleford, and Haultain formations of the Saskatoon Group. Locally, the collapse is about 180 m, which is about equal to the thickness of the salt. The first phase of collapse took place after de

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Curtis, Michael L., and Simon A. Lomas. "Late Cambrian stratigraphy of the Heritage Range, Ellsworth Mountains: implications for basin evolution." Antarctic Science 11, no. 1 (1999): 63–77. http://dx.doi.org/10.1017/s0954102099000103.

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Deposition of the Upper Cambrian succession of the Ellsworth Mountains was influenced by major, episodic tectonically-driven changes to the depositional basin geometry. We subdivide the succession into four stratigraphical sequences based on the recognition of three sequence-bounding unconformities. The upper part of Sequence 1 is composed of the laterally equivalent Liberty Hills, Springer Peak and Frazier Ridge formations, a siliciclastic fluvial to marine deltaic association displaying NW-directed palaeocurrents. A switch in the position of the Late Cambrian depocentre from the north-west t

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Nardin, W., D. A. Edmonds, and S. Fagherazzi. "Influence of vegetation on spatial patterns of sediment deposition in deltaic islands during flood." Advances in Water Resources 93 (July 2016): 236–48. http://dx.doi.org/10.1016/j.advwatres.2016.01.001.

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Kurnio, Hananto, and Yudi Darlan. "BIOGENIC GAS IN DELTAIC DEPOSITION ENVIRONMENT IN KAPUAS RIVER, WEST KALIMANTAN AND ITS UTILIZATIONS FOR LOCAL COMMUNITY." BULLETIN OF THE MARINE GEOLOGY 24, no. 2 (2016): 55. http://dx.doi.org/10.32693/bomg.24.2.2009.15.

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Biogenic gas within a deltaic deposition environment in the Kapuas rivermouth of West Kalimantan occurred in fine to very fine quartz sand reservoir of shallow boreholes of having the depth of 1-12 m below ground surface. This reservoir is covered by peaty layers of semi-impermeable property. During high tide, gas bubbling took place in the water column above the ground of these semi-impermeable layers. Utilizations of biogenic gas had been done succesfully. These works were carried out through drilling, piping, gas storage and installations for gas stove and gas electricity generator of 500 w

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Willis, Brian J., Tao Sun, and R. Bruce Ainsworth. "Contrasting facies patterns between river-dominated and symmetrical wave-dominated delta deposits." Journal of Sedimentary Research 91, no. 3 (2021): 262–95. http://dx.doi.org/10.2110/jsr.2020.131.

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ABSTRACT Process-physics-based, coupled hydrodynamic–morphodynamic delta models are constructed to understand preserved facies heterogeneities that can influence subsurface fluid flow. Two deltaic systems are compared that differ only in the presence of waves: one river dominated and the other strongly influenced by longshore currents. To understand an entire preserved deltaic succession, the growth of multiple laterally adjacent delta lobes is modeled to define delta axial to marginal facies trends through an entire regressive–transgressive depositional succession. The goal is to refine a fac

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Rogala, Becky, Philip W. Fralick, Larry M. Heaman, and Riku Metsaranta. "Lithostratigraphy and chemostratigraphy of the Mesoproterozoic Sibley Group, northwestern Ontario, Canada." Canadian Journal of Earth Sciences 44, no. 8 (2007): 1131–49. http://dx.doi.org/10.1139/e07-027.

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The 950 m thick Sibley Group is a relatively flat-lying assemblage of siliciclastic and chemical sedimentary rocks exposed from the northwest shore of Lake Superior to the Lake Nipigon region of Ontario. Remnants of the Sibley Group occur in an ovoid area that sagged at ~1.5 Ga, creating accommodation space for braided fluvial sediments, derived as either first or multicycle detritus from the Trans-Hudson Orogen. This was followed by a transgressive episode and deposition of lacustrine siliciclastics and evaporites. An influx of sediment from the south occurred immediately prior to final contr

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Eluozo, Solomon Ndubuisi, and J. O. Ademiluyi. "Establishment of porosity and permeability models correlation to validate E.coli Transport to ground water aquifers: Rivers state of Nigeria." International Journal of Engineering & Technology 2, no. 1 (2012): 17. http://dx.doi.org/10.14419/ijet.v2i1.423.

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The evaluation of porosity and permeability models correlation on the migration of e.coli transport in deltaic environment has been assessed. This is to validate the model generated from the experimental analysis in the study location, this model are generated through the experimental results from both parameters, the theoretical values from both parameters confirm that the models generated is a bench mark that can be applied as a design criteria in preventing the migration of e.coli to ground water aquifer, it has also confirm that it plays a major role in fast transport of e.coli in deltaic

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Sheridan, Mattilda, D. Rhodri Johns, Howard D. Johnson, and Sandra Menpes. "The stratigraphic architecture, distribution and hydrocarbon potential of the organic-rich Kyalla and Velkerri shales of the Upper Roper Group (McArthur Basin)." APPEA Journal 58, no. 2 (2018): 858. http://dx.doi.org/10.1071/aj17224.

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Recent exploration studies on the stratigraphic framework, depositional environment and tectonic setting of the Mesoproterozoic Roper Group in the McArthur Basin, have led to an improved understanding of the highly prospective organic-rich shales of the Velkerri and Kyalla Formations. From a review of open-file drill core and well logs, several major regressive–transgressive (R–T) cycles have been identified along with four key facies associations within the Roper Group. The R–T cycles show sedimentary features typical of deposition within a clastic-dominated marine deltaic setting and show ma

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Fralick, P., and P. K. Pufahl. "Iron Formation in Neoarchean Deltaic Successions and the Microbially Mediated Deposition of Transgressive Systems Tracts." Journal of Sedimentary Research 76, no. 9 (2006): 1057–66. http://dx.doi.org/10.2110/jsr.2006.095.

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Della Fávera, Jorge Carlos, Hernani Aquini Fernandes Chaves, Marco André Malmann Medeiros, et al. "STRATIGRAPHIC ANALYSIS OF THE ARATU STAGE (LOWER CRETACEOUS), RECÔNCAVO BASIN (BRAZIL), WITH HYDROCARBON RESERVOIR ROCKS." Journal of Sedimentary Environments 4, no. 2 (2019): 199–219. http://dx.doi.org/10.12957/jse.2019.43784.

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The section between the 7 and 11 electric markers in the Aratu Stage of the Recôncavo Basin (Lower Cretaceous) has been studied in order to perform a stratigraphic analysis. This section bear reservoir rocks known as Imbé, Cambuqui and Miranga sandstones. It produces petroleum in fields like Miranga, Araçás, Taquipe, Miranga Norte and Imbé.The isopach map showed a general trend of increased subsidence for south and southeast. A series of structural lows surround the platform region known as Quiricó High. Southwestward, the Taquipe Canyon is an indication of the lake deepening in that region.In

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Cook, A. C., Michelle Smyth, and R. G. Vos. "SOURCE POTENTIAL OF UPPER TRIASSIC FLUVIO-DELTAIC SYSTEMS OF THE EXMOUTH PLATEAU." APPEA Journal 25, no. 1 (1985): 204. http://dx.doi.org/10.1071/aj84018.

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The fluvio-deltaic rocks of the Upper Triassic Mungaroo Formation of the Exmouth Plateau contain abundant organic material in the form of both coal seams and dispersed fragments. Several thousand metres of these sediments lie within the oil generation window (0.5 to 1.3 per cent R̅O max vitrinite), but they have commonly not been considered as source rocks for oil because the organic matter is of terrestrial origin. Increasing acceptance of plant material as a source for oil warrants an assessment of the oil generating potential of the Mungaroo Formation.The maceral composition of organic matt

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Bárcenas, P., F. J. Lobo, J. Macías, L. M. Fernández-Salas, N. López-González, and V. Díaz del Río. "Submarine deltaic geometries linked to steep, mountainous drainage basins in the northern shelf of the Alboran Sea: Filling the gaps in the spectrum of deltaic deposition." Geomorphology 232 (March 2015): 125–44. http://dx.doi.org/10.1016/j.geomorph.2014.11.028.

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Nielsen, Søren A. V., and Lars H. Nielsen. "Mid-Miocene progradational barrier island and back-barrier deposits, central Jylland, Denmark." Danmarks Geologiske Undersøgelse Serie C 12 (December 31, 1995): 21–38. http://dx.doi.org/10.34194/seriec.v12.7107.

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This paper reports on a c. 15 m thick section of marine, coastal sand, that combine a hitherto less described fades succession transitional to the Miocene fluvio-deltaic and open marine deposits. The section is exposed in a pit located 10 km northeast of the sandy fluvio-deltaic brown coal bearing strata of the Søby-Fasterholt area, known as the Odderup Formation (Middle Miocene). The section comprises more than 6 m of trough cross-stratified, low-angle cross-stratified and parallel-laminated, sand and gravel, deposited on the foreshore and backshore of a barrier island. Locally these deposits

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Priya, Raj Kumar, Vinod Chandra Tewari, and Rakesh Kumar Ranjan. "Permo-Carboniferous Climate Change: Geochemical Evidences from Lower Gondwana Glacial Sediments, Rangit Valley, Sikkim Lesser Himalaya, India." Journal of Climate Change 7, no. 1 (2021): 1–11. http://dx.doi.org/10.3233/jcc210001.

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The Rangit Gondwana Basin of Sikkim in the lesser Himalaya witnessed a wide span of climate change during the Permo-Carboniferous period. The principal objective of the present study is to document this Permo-Carboniferous climate change in the form of a geochemical signature preserved in the siliciclastic facies of the Rangit Pebble Slate Formation. The stratigraphic sequences of the Rangit Gondwana Basin are categorically well defined and subdivided into upper and lower sequences on the basis of their depositional environment. The lower sequences of the Rangit Gondwana basin are comprised of

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Wendt, Anna K., Mike A. Arthur, Rudy Slingerland, Daniel Kohl, Reed Bracht, and Terry Engelder. "Geochemistry and depositional history of the Union Springs Member, Marcellus Formation in central Pennsylvania." Interpretation 3, no. 3 (2015): SV17—SV33. http://dx.doi.org/10.1190/int-2014-0228.1.

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Debate continues over paleoenvironmental conditions that prevail during deposition of organic-carbon (C)-rich marine source rocks in foreland basins and epicontinental seas. The focus of disagreement centers largely on paleowater depth and the prevalence of anoxia/euxinia. The issues of paleodepth and water column conditions are important for prediction of lateral variations in source quality within a basin because the viability of a hydrocarbon play depends on a thorough understanding of the distribution of source rock quality and depositional environments. We used inorganic geochemical data

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Zăinescu, Florin, Alfred Vespremeanu-Stroe, Edward Anthony, Florin Tătui, Luminita Preoteasa, and Răzvan Mateescu. "Flood deposition and storm removal of sediments in front of a deltaic wave-influenced river mouth." Marine Geology 417 (November 2019): 106015. http://dx.doi.org/10.1016/j.margeo.2019.106015.

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Benn, Douglas I., and David J. A. Evans. "Glaciomarine deltaic deposition and ice-marginal tectonics: The ‘Loch Don Sand Moraine’, Isle of Mull, Scotland." Journal of Quaternary Science 8, no. 4 (1993): 279–91. http://dx.doi.org/10.1002/jqs.3390080402.

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Yu, Hong Zhong, and Jiao Wang. "The Shallow-Water Delta Deposit and Exploration Significance in Huanghekou Depression." Applied Mechanics and Materials 522-524 (February 2014): 1333–36. http://dx.doi.org/10.4028/www.scientific.net/amm.522-524.1333.

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As a new kind of deposition system, the shallow-water delta deposit is accepted increasingly by exploration workers in Bohai oil field. In the oil-gas exploration process, more and more evidence about the existence of shallow-water delta was discovered, such as palaeophyte, mudstone characteristic, log response and so on. From the perspective of sequence stratigraphy, the author of this article analyze the causes of shallow-water delta and think that the water-depth change is the major factor that control the throughgoing of shallow-water deltaic sands body; And summarizes the unique character

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Maselli, Vittorio, Alexandre Normandeau, Michael Nones, et al. "Tidal modulation of river-flood deposits: How low can you go?" Geology 48, no. 7 (2020): 663–67. http://dx.doi.org/10.1130/g47451.1.

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Abstract Quantification of the interaction between river discharge and tides is vital to characterize fluvio-deltaic systems, to identify diagnostic elements of tidal signatures in the rock record, and to reconstruct paleogeographies. In modern systems, even microtides can significantly influence delta morphodynamics; yet, many fundamental processes, particularly in prodeltaic settings, remain elusive. Here, by combining a unique process-product data set acquired during a flood event of the Po River (Italy) with numerical modeling, we show that tidal signatures are recorded in the open-water p

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Amer, Zainab. "Facies Analysis and Depositional Stages of The Albian-Aptian Succession in Balad Oil Field, Central Iraq." Iraqi Geological Journal 54, no. 1B (2021): 43–56. http://dx.doi.org/10.46717/igj.54.1b.4ms-2021-02-22.

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Carbonate-clastic succession which includes the Shu'aiba, Nahr Umr and Mauddud formations are representing a part of the Barremian-Aptian Sequence (Wasi'a Group). The present study includes three boreholes (Ba-1, 4 and 8) within the Balad Oil Field. The study area is located in central Iraq. This field represents a subsurface anticline with a northwest to southeast direction axis within the Mesopotamian Zone. Eight types of microfacies were recognized in the succession of the Mauddud and Shu’aiba formations. These microfacies represent shallow open marine, restricted and semi-restricted, reef

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Tuomisto, Hanna, Kalle Ruokolainen, and Jukka Salo. "LAGO AMAZONAS: FACT OR FANCY?" Acta Amazonica 22, no. 3 (1992): 353–61. http://dx.doi.org/10.1590/1809-43921992223361.

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It has been suggested that a huge lake, Lago Amazonas, covered a large part of the Amazon basin until as recently as two thousand years ago. According to this hypothesis, the topmost sediments in western Amazonia are almost universally young deposite of lacustrine and deltaic origin. The hypothesis has gained some attention among biologists because of its implications for biological phenomena in Amazonia, especially biogeography and biodiversity. According to the available geological data, however, Amazonia is geologically far more complex than assumed by the lake hypothesis. In the following

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Amer, Reda, Alexander S. Kolker, and Annelise Muscietta. "Propensity for erosion and deposition in a deltaic wetland complex: Implications for river management and coastal restoration." Remote Sensing of Environment 199 (September 2017): 39–50. http://dx.doi.org/10.1016/j.rse.2017.06.030.

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Aadland, Tore, and William Helland‐Hansen. "Progradation Rates Measured at Modern River Outlets: A First‐Order Constraint on the Pace of Deltaic Deposition." Journal of Geophysical Research: Earth Surface 124, no. 2 (2019): 347–64. http://dx.doi.org/10.1029/2018jf004750.

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MIZUSAKI, ANA MARIA PIMENTEL, KOJI KAWASHITA, and ANTONIO THOMAZ FILHO. "Razão Isotópica 87Sr/86Sr em Sedimentos Recentes Implicações na Datação Radiométrica das Rochas Sedimentares." Pesquisas em Geociências 25, no. 1 (1998): 75. http://dx.doi.org/10.22456/1807-9806.21175.

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Radiometric ages of geological significance are obtained when the Rb/Sr isocronic method is applied to argillaceous sedimentary rocks. In spite of these results many questions arise when the Rb/Sr methodology is applied to sedimentary rocks, notably the behavior of the rubidium (Rb) and strontium (Sr) elements during sedimentation and during the diagenetic process. The greatest uncertainty lies in the mechanism and the timing of the strontium isotopic homogenization, with constitutes the basic assumption behind radiometric dating by the Rb/Sr method. The purpose of this work is to contribute t

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Zhang, Yunlong, Zhidong Bao, Luxing Dou, Li Jiang, Mingyang Wei, and Li Zhang. "Hydrodynamics and deposition in lacustrine shallow-water delta front: A combination of numerical simulations and modern sedimentation measurements." Interpretation 8, no. 3 (2020): SM39—SM52. http://dx.doi.org/10.1190/int-2019-0176.1.

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With the exploration of tight oil and gas, shallow-water deltaic reservoirs have been attracting more and more attention. The sedimentary architecture of a shallow-water delta shows distinctive differences with that of a deep-slope delta. These differences may be associated with the mechanism and characteristics of the deposition in the area where the sediments unloaded. Based on modern sedimentary research of the Poyang Lake in China, this paper focuses on the processes of river flow entering a lake with a low dip angle. We conducted six sets of numerical simulations with different initial se

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Liverman, David G. E. "Sedimentation in ice-dammed Hazard Lake, Yukon." Canadian Journal of Earth Sciences 24, no. 9 (1987): 1797–806. http://dx.doi.org/10.1139/e87-171.

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"Hazard Lake," located in Kluane National Park, the Yukon, is an ice-dammed lake formed in 1966 by the surge of the Steele Glacier. Since 1975 it has drained annually by means of a subglacial tunnel. During July 1979, observations were made of lake processes before drainage and of sections described in the lake bottom after drainage. Three facies associations are believed to represent prelake, stable lake, and annual draining phases. Gravel commonly found at the base of sections represents deposition in a braided fluvial system prior to 1966. Lake sediments deposited between 1966 and 1975 are

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Bajc, Andrew F., Alan V. Morgan, and Barry G. Warner. "Age and paleoecological significance of an early postglacial fossil assemblage near Marathon, Ontario, Canada." Canadian Journal of Earth Sciences 34, no. 5 (1997): 687–98. http://dx.doi.org/10.1139/e17-055.

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Organic materials recovered from deltaic deposits confined to the Black River Valley near Marathon, Ontario, provide information on lake-level history and local ecology for the region. Radiocarbon samples provide the first age determinations (ca. 8200 BP) for the post-Minong III – IV lake phases along the northeast corner of the Lake Superior basin. A minimum of 49 Coleoptera taxa and 22 vascular plant taxa indicate coniferous-forest and riparian communities. Overbank deposition along rivers flowing from the ice margin provided temporary ponds colonized by sedges and other aquatic plants and a

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Spring, D. E., and N. A. Newell. "DEPOSITIONAL SYSTEMS AND SEQUENCE STRATIGRAPHY OF THE CRETACEOUS WARNBRO GROUP, VLAMING SUB-BASIN, WESTERN AUSTRALIA." APPEA Journal 33, no. 1 (1993): 190. http://dx.doi.org/10.1071/aj92015.

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Petroleum exploration of the Vlaming Sub-basin (offshore Perth Basin) has to date primarily focussed on targets sealed by the shale facies of the Early Cretaceous Warnbro Group, a predominantly marine succession. The Warnbro Group is formally sub-divided into the Gage Sandstone Member (base), South Perth Shale and Leederville Formation (top). However, owing to diachroneity between lithofacies, adherence to the formal nomenclature has rendered the prediction of shale facies at specific locations unreliable, resulting in a number of invalid exploration tests.To resolve this problem, sequence and

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Alao, P. A., S. O. Olabode, and S. A. Opeloye. "Integration of Seismic and Petrophysics to Characterize Reservoirs in “ALA” Oil Field, Niger Delta." Scientific World Journal 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/421720.

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In the exploration and production business, by far the largest component of geophysical spending is driven by the need to characterize (potential) reservoirs. The simple reason is that better reservoir characterization means higher success rates and fewer wells for reservoir exploitation. In this research work, seismic and well log data were integrated in characterizing the reservoirs on “ALA” field in Niger Delta. Three-dimensional seismic data was used to identify the faults and map the horizons. Petrophysical parameters and time-depth structure maps were obtained. Seismic attributes was als

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