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Articoli di riviste sul tema "Braided fluvial"

Autore: Grafiati

Pubblicato: 21 dicembre 2024

Ultima modifica: 31 luglio 2025

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1

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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2

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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3

Sigdel, Ashok, and Tetsuya Sakai. "Sedimentary facies analysis of the fluvial systems in the Siwalik Group, Karnali River section, Nepal Himalaya, and their significance for understanding the paleoclimate and Himalayan tectonics." Journal of Nepal Geological Society 51 (December 31, 2016): 11–26. http://dx.doi.org/10.3126/jngs.v51i0.24084.

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Fluvial sediments of the Siwalik successions in the Himalayan Foreland Basin are one of the most important continental archives for the history of Himalayan tectonics and climate change during the Miocene Period. This study reanalyzes the fluvial facies of the Siwalik Group along the Karnali River, where the large paleo-Karnali River system is presumed to have flowed. The reinterpreted fluvial system comprises fine-grained meandering river (FA1), flood-flow dominated meandering river with intermittent appearance of braided rivers (FA2), deep and shallow sandy braided rivers (FA3, FA4) to grave

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4

Lu, Zhiyuan, Zhiliang He, Shizhong Ma, and Yu He. "Sedimentary characteristics and sand-body distributions in the Lower Permian He 8 Member, Ordos Basin, China." Interpretation 10, no. 2 (2022): T223—T236. http://dx.doi.org/10.1190/int-2021-0101.1.

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The Lower Permian He 8 Member (P1h8) in the Ordos Basin is a typical producing zone of tight lithologic gas reservoirs. Analyses of sedimentary characteristics, electrofacies, and sand-body distributions of P1h8, conducted on modern fluvial deposits, outcrops, cores, and well logs, revealed that braided rivers that developed in the Lower P1h8 and Upper P1h8 are characterized by meandering river. Within these fluvial deposits, the procedure consists of analyzing high-resolution sequence stratigraphy and sedimentary dynamics defined from calibrated logging curve signatures and depositional studi

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5

Ju, Xiaoyu, Xiaodong Zhao, Boyu Zhou, Ruixue Zhang, Xinyu Wu, and Dafa Guo. "Identification of Reservoir Water-Flooding Degrees via Core Sizes Based on a Drip Experiment of the Zhenwu Area in Gaoyou Sag, China." Energies 16, no. 2 (2023): 608. http://dx.doi.org/10.3390/en16020608.

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In order to identify the degree of water flooding in a reservoir and to discover any remaining oil-enriched areas, in this paper, a systematic study on the water flooding of cores in obturated coring wells is carried out. With observations and testing data of the cores, based on the notion of sedimentary facies, the water-flooding degrees of 4–7 sand groups in member one of the Paleogene Sanduo Formation (E2s14–7) of the Zhenwu area in the Gaoyou Sag are determined. Overall, the results show that the study area is formed under the background of lake regression, with various sedimentary systems

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6

Zawri, Nurul Fahana, Abdul Hadi Abd Rahman, Numair Ahmed Siddiqui, and Norizam Md Nor. "Geomorphological evolution of the Group I fluvial system, AX field, Malay Basin." IOP Conference Series: Earth and Environmental Science 1003, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1755-1315/1003/1/012009.

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Abstract The AX Field is located 167km off NNE Kerteh, Terengganu of Peninsular Malaysia, southwest of Malay Basin. This study is focused on the 3D seismic analysis of the Lower Miocene fluvio-deltaic Group I. The objective of the study is to evaluate the geomorphological evolution of fluvial succession and interpret the possible intra-basinal and extra-basinal controls on the fluvial evolution. One hundred strata slices were generated in order to evaluate the evolution of the fluvial systems within the Group I interval. Seismic attributes such as Root Mean Square (RMS), sweetness and spectral

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7

Sun, Yu, Xiu Li Zhang, Jin Yan Zhang, and Chen Chen. "Analysis on Grain-Size Characteristics and Sedimentary Environment of Conglomerate Reservoirs in Ying-4 Section of Xingcheng Gas Field of Songliao Basin." Advanced Materials Research 734-737 (August 2013): 286–89. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.286.

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Aimed at difficulty of conglomerate in Ying-4 Section of Xingcheng Gas Field, Songliao Basin, which it is impossible to be carried out, using routine granularity analysis methods, and the iconic grain-size analysis is carried out. According to iconic two-dimension grain-size analysis, and contacting to fundamental sedimentary characteristics of conglomerate, sedimentary environment analysis is carried out. It is thought that this area is Shallow gravel-bed braided fluvial fan deltas, to braided fluvial delta transition, which supported an important geological foundation for the next dispositio

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8

Liu, Yuming, Luxing Dou, Xiaoxu Ren, and Jiagen Hou. "Sedimentary characteristics of muddy deposits in sandy braided fluvial system: A case study from outcrops of the Jurassic Yungang Formation in the Datong Basin, Central China." Interpretation 8, no. 3 (2020): SM139—SM149. http://dx.doi.org/10.1190/int-2019-0174.1.

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The sandbodies within braided fluvial deposits are important reservoirs for the oil fields in China, and they usually have complex sedimentary architecture. A lot of research has been concentrated on characterizing the architecture of the sandbodies. Based on the observation that muddy deposits are commonly well preserved in fluvial deposits, we find that understanding the contact relationship between the muddy deposits and surrounding sand bodies can help characterize the depositional process of sandy braided fluvial systems. We have determined the effectiveness of this idea by characterizing

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9

Cui, Kunning. "Characteristics of sedimentary system evolution and sequence stratigraphy boundary of Denglouku group in Xujiaweizi fault depression, Songliao Basin." IOP Conference Series: Earth and Environmental Science 1087, no. 1 (2022): 012073. http://dx.doi.org/10.1088/1755-1315/1087/1/012073.

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Abstract In the previous studies on this area, the sequence division is relatively rough. This study has improved the precision, and the Denglouku formation is divided into 10 fourth-order sequences, with the thickness of each small layer of about 70-80m. The characteristics of each small sequence boundary are described, and three third-order, four fourth-order sequence flooding surfaces are found. The stratigraphic framework is established. From bottom to top, the base level of all strata shows decline-rise-decline, which means regression-transformation-regression. The Denglouku 1st mainly in

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10

Candeiro, Carlos Roberto, Rodrigo Pinto De Azevedo, and Priscila Maria Da Silva. "PRELIMINARY APPROACH ON DEPOSITIONAL ENVIRONMENTAL OF THE UBERABA FORMATION (UPPER CRETACEOUS), PEIRÓPOLIS SITE, MINAS GERAIS STATE, BRAZIL: AN INTRODUCTION." Caminhos de Geografia 8, no. 22 (2007): 81–85. http://dx.doi.org/10.14393/rcg82215625.

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The Coniacian-Santonian Uberaba Formation of Triângulo Mineiro region hás yielded a important paleofauna from fluvial and associated paleoenvironments. Although poor, fossil content are represented by invertebrates and vertebrates. The paleontological and geological data suggested that Uberaba Formation is characterized by a fluvial of a braided type.

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11

Miall, Andrew D., and Mohamud Arush. "Cryptic sequence boundaries in braided fluvial successions." Sedimentology 48, no. 5 (2001): 971–85. http://dx.doi.org/10.1046/j.1365-3091.2001.00404.x.

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12

Kang, Qiangqiang, Jiagen Hou, Liqin Liu, Mingqiu Hou, and Yuming Liu. "Quantitative Prediction of Braided Sandbodies Based on Probability Fusion and Multi-Point Geostatistics." Energies 16, no. 6 (2023): 2796. http://dx.doi.org/10.3390/en16062796.

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Predicting the spatial distribution of braided fluvial facies reservoirs is of paramount significance for oil and gas exploration and development. Given that seismic materials enjoy an advantage in dense spatial sampling, many methods have been proposed to predict the reservoir distribution based on different seismic attributes. Nevertheless, different seismic attributes have different sensitivities to the reservoirs, and informational redundancy between them makes it difficult to combine them effectively. Regarding reservoir modeling, multi-point geostatistics represents the distribution char

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13

Ulak, Prakash Das. "Evolution of fluvial system and reconstruction of paleohydrology of late Cenozoic Siwalik Group, related to tectonic uplift of Himalaya and climatic change, Kankai River section, east Nepal Himalaya." Journal of Nepal Geological Society 51 (December 31, 2016): 59–72. http://dx.doi.org/10.3126/jngs.v51i0.24093.

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This paper focuses on evolution of the fluvial system in the late Cenozoic Siwalik Group along the Kankai River section of East Nepal. The Siwalik Group lies on the southern flank of the Himalaya and composed of molasse sediments, which were derived from upheaval of the Himalaya. On the basis of lithology, assemblage of sedimentary structures and sediment body architectures, seven facies associations (FA1 to FA7) are recognized in the Kankai River section, East Nepal Himalaya. These recognized facies associations are closely related to each lithostratigraphic units of the area (Ulak 2009). The

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14

Payenberg, T. H. D., and S. C. Lang. "RESERVOIR GEOMETRY OF FLUVIAL DISTRIBUTARY CHANNELS—IMPLICATIONS FOR NORTHWEST SHELF, AUSTRALIA, DELTAIC SUCCESSIONS." APPEA Journal 43, no. 1 (2003): 325. http://dx.doi.org/10.1071/aj02017.

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The exploration and development of stratigraphically trapped hydrocarbons requires detailed knowledge of the morphologies and reservoir characteristics of the stratigraphic body. Fluvial distributary channels are important exploration targets because they are typically isolated reservoirs, laterally and vertically sealed by delta plain and abandoned channel mudstone, and thus form excellent stratigraphic traps. The morphology and reservoir characteristics of fluvial distributary channels have been confused with fluvial channels in the past. Knowing the characteristics of fluvial distributary c

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15

Fan, Er Ping, Yue Hong Cheng, Yuan Zhi Zhang, and Zhen Hua Bai. "Sedimentology and Reservoir Characteristics of He8 Member, in a Gas Field of Ordos Basin, Northern China." Advanced Materials Research 734-737 (August 2013): 161–65. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.161.

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The rapid lateral variation of fluvial sand-bodies seriously affect the development of oil and gas field. One long-term base-level cycle (LSC), four middle-term base-level cycles (MSC) and nine short-term base level cycles (SSC) are recognized by researching the stacking patterns and volumetric partitioning according to the core, well log and seismic data in He8 member of A gas field, Ordos basin. The base level cycles which are mainly base level rise half cycles are mainly composed of braided and meandering river deposits. The evolution of depositional system has experienced three stages: bra

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16

Raath, R. F., C. R. Penn-Clarke, and A. F. M. Kisters. "Regional variance in alluvial sedimentation and revised stratigraphy of the Klipheuwel Group and Franschhoek Formation." South African Journal of Geology 127, no. 3 (2024): 641–64. http://dx.doi.org/10.25131/sajg.127.0033.

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Abstract The siliciclastic sediments of the Klipheuwel Group mark the transition from Pan-African tectonism and amalgamation of Southwest Gondwana to the shallow marine deposits of the Cape Supergroup in the Western Cape. The rocks are preserved in a number of seemingly isolated depositories and previous studies have mainly focused on selected occurrences. The lack of any integration of regional sedimentological or structural characteristics has, to date, resulted in only tentative stratigraphic correlations and subdivisions of the Klipheuwel Group. Lithological and structural data from the Kl

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17

Andrews-Speed, C. P. "The role of silica and iron oxide mobility in the formation of gold-bearing fluvial sediments in the Proterozoic Mporokoso Basin, northern Zambia." Geological Magazine 123, no. 2 (1986): 143–52. http://dx.doi.org/10.1017/s0016756800029794.

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AbstractGold-bearing sandstone and conglomerate near the base of the Proterozoic Mporokoso Group were deposited in a braided river system. The detrital sand grade material is mainly of quartz, sericite and haematite, and the pebbles are of vein-quartz, chert, silicic volcanics, quartzose metasediment and jaspilite. The basement rocks presently exposed in the basement are silicic igneous rocks and quartzose metasediments.The petrography of the fluvial sediments suggests that silica and, to a lesser extent, iron oxide were mobile both in the source-area and in the braided river system. Evidence

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18

Fambrini, Gelson Luís, Diego da Cunha Silvestre, José Acioli Bezerra de Menezes-Filho, Ian Cavalcanti da Costa, and Virgínio Henrique de Miranda Lopes Neumann. "Architectural and facies characterization of the Aptian fluvial Barbalha Formation, Araripe Basin, NE Brazil." Geological Society, London, Special Publications 488, no. 1 (2019): 119–50. http://dx.doi.org/10.1144/sp488-2017-275.

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AbstractThe Aptian Barbalha Formation records the beginning of the post-rift stage of the Araripe Basin. It consists predominantly of sandstones and mudstones interbedded with thin layers of bituminous black shales and conglomerates. The depositional and architectural features of the alluvial succession of the Barbalha Formation were characterized by detailed study and descriptions of the selected outcrops and analysis of well core data. In this study, two main depositional sequences were identified. The lower depositional sequence is more than 100 m thick and comprises a vertical facies succe

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19

García-Alix, Antonio, Raef Minwer-Barakat, Elvira Martín Suárez, and Matthijs Freudenthal. "Small mammals from the early Pleistocene of the Granada Basin, southern Spain." Quaternary Research 72, no. 2 (2009): 265–74. http://dx.doi.org/10.1016/j.yqres.2009.06.004.

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AbstractThe Pliocene and Pleistocene continental sedimentary records of the western sector of the Granada Basin, southern Spain, consist of alternating fluvial and lacustrine/palustrine sediments. Two Quaternary sections from this sector have been sampled: Huétor Tájar and Tojaire. They have yielded remains of rodents, insectivores and lagomorphs. The presence in the Huétor Tájar and Tojaire sections of Mimomys, Apodemus atavus, Castillomys rivas and two different species of Allophaiomys, indicates an Early Pleistocene age. These deposits, which are related to a fluvio-lacustrine system, can b

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20

Luo, Shun She, Fei Shang, Qi Qi Lv, Zhong Bao Liu, and Ying Meng. "Influence of Hydrodynamics on Formation of Braided Fluvial Delta." Applied Mechanics and Materials 318 (May 2013): 453–59. http://dx.doi.org/10.4028/www.scientific.net/amm.318.453.

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The changes of hydrodynamics will influence the formation of braided river delta. Based on many previous studies, this article does some quantitative analysis of migration rate of channel, sedimentation position for sandbody and the shape of bar under the conditions of flood, common water and low water on the basis of sedimentary simulation techniques, and transportation model of sandbody is set up under the experimental condition. The results of flume experiment show that the difference exists in the position of the thickest sandbody under diffident hydrodynamic conditions. Migration rate of

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21

Li, Shunli, Xinghe Yu, Bintao Chen, and Shengli Li. "Quantitative Characterization of Architecture Elements and Their Response To Base-Level Change In A Sandy Braided Fluvial System At A Mountain Front." Journal of Sedimentary Research 85, no. 10 (2015): 1258–74. http://dx.doi.org/10.2110/jsr.2015.82.

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Abstract: The Rockcave Member of the Yungang Formation (Middle Jurassic), in the Datong Basin, China, is a multistory sandstone that is interpreted as a sandy braided fluvial deposit based on grain size, lithofacies, and architectural elements. The depositional setting was the mountain front of the Datong Basin, which was tens of kilometers from the shoreline of a lacustrine basin during the Middle Jurassic. The concept of base level is used to analyze the architectural elements of the braided system obtained from photographic mosaics and high-resolution measurement of six outcrop sections fro

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22

Xu, Qinghai, Wanzhong Shi, Xiangyang Xie, et al. "Multichannel systems in an ancient river-dominated delta: case study of the lower Yanchang Formation, southwest Ordos Basin, China." Canadian Journal of Earth Sciences 56, no. 10 (2019): 1027–40. http://dx.doi.org/10.1139/cjes-2018-0277.

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Distributary channels in large deltas can form a channel pattern similar to braided fluvial system or anastomosed fluvial system that have multichannel systems. Although both systems are of generally comparable platforms, their geometry, sedimentology, and facies associations may exhibit unique characteristics. Many ancient multichannel systems have been interpreted as braided patterns, but some are certainly anastomosed patterns. A reevaluation of ancient multichannel architectures and sedimentology patterns is needed to improve discrimination of braided and anastomosed patterns of multichann

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23

Malaza, Ntokozo, Kuiwu Liu, and Baojin Zhao. "Facies Analysis and Depositional Environments of the Late Palaeozoic Coal-Bearing Madzaringwe Formation in the Tshipise-Pafuri Basin, South Africa." ISRN Geology 2013 (December 11, 2013): 1–11. http://dx.doi.org/10.1155/2013/120380.

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The late Palaeozoic coal-bearing Madzaringwe Formation of the Karoo Supergroup in the Tshipise-Pafuri Basin in the Limpopo Province, South Africa, records part of the infill of a passive continental margin terrain. Lithofacies analysis was performed with a view to deduce the nature of depositional environments of the Formation. Sedimentological and sequence stratigraphic evidence indicates that this unit represents a complex siliciclastic facies that reflects a fluvial paleodepositional environment. Eleven facies, which were grouped into five facies associations, were recognised. The base of t

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Preusser, Frank, Benjamin U. Müller, and Christian Schlüchter. "Luminescence Dating of Sediments from the Luthern Valley, Central Switzerland, and Implications for the Chronology of the Last Glacial Cycle." Quaternary Research 55, no. 2 (2001): 215–22. http://dx.doi.org/10.1006/qres.2000.2208.

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AbstractThe advancing glaciers of the last glacial maximum either eroded or deeply buried older sediments in the Swiss Alpine Foreland. However, part of the Swiss Plateau was not covered by ice and is therefore an excellent area for investigating climate and environmental change during the Upper Pleistocene. Repeated fluvial sequences can be studied in several pits along the Luthern Valley. The chronological framework is based on lithostratigraphy, pollen analysis, U/Th dating, and recently, heavy mineral analysis and luminescence dating. The oldest unit, the Untere Zeller Schotter braided riv

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Daryono, Sapto Kis, Carolus Prasetyadi, Eko Teguh Paripurno, Sutanto Sutanto, and Aditya Zaenalfi Faozi. "Facies and architectural analysis of Paleogen fluvial deposits of the measured section of Rambangnia and Air Napalan Rivers in Palembang Sub-basin." Journal of Earth and Marine Technology (JEMT) 3, no. 1 (2022): 24–33. http://dx.doi.org/10.31284/j.jemt.2022.v3i1.3606.

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Paleogene fluvial deposits have an important problem as pre-rift deposits, which occur before or at the same time as the formation of the basin. The research results on facies analysis and interpretation of the depositional environment of Paleogene deposits located in the Garba Hills will later explain and describe the history of the formation and stratigraphic evolution of sedimentary rocks in the South Sumatra Basin, reflected in the lithological and facies characteristics. The facies analysis was carried out on a stratigraphic cross-section with a thickness of ± 107.37 meters and ± 11.06 me

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Kasse, C., R. T. Van Balen, S. J. P. Bohncke, J. Wallinga, and M. Vreugdenhil. "Climate and base-level controlled fluvial system change and incision during the last glacial–interglacial transition, Roer river, the Netherlands – western Germany." Netherlands Journal of Geosciences 96, no. 2 (2016): 71–92. http://dx.doi.org/10.1017/njg.2016.50.

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AbstractThe fluvial development of the Roer river in the southeastern Netherlands and western Germany is presented for the Late Pleniglacial, Late-glacial and Early Holocene periods. Reconstruction of fluvial-style changes is based on geomorphological and sedimentological analysis. Time control comes from correlation to the pollen-based biochronostratigraphic framework of the Netherlands combined with independent optically stimulated luminescence (OSL) ages. At the Pleniglacial to Late-glacial transition a system and channel pattern change occurred from an aggrading braided to an incising mean

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Moscariello, A. "The Schooner Field, Blocks 44/26a, 43/30a, UK North Sea." Geological Society, London, Memoirs 20, no. 1 (2003): 811–24. http://dx.doi.org/10.1144/gsl.mem.2003.020.01.68.

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AbstractThe Schooner Field is Shell U.K.'s first Carboniferous gas development in the North Sea. The field was discovered in 1987 by well 44/26-2 and gas production began in October 1996 from four wells. In contrast to the majority of the fields in the Southern North Sea producing from the aeolian Leman Sandstones Formation (Rotliegend), Schooner targets the low net-to-gross, fluvial Upper Carboniferous Barren Red Measures and Coal Measures formations. The reservoir consists of discrete, low sinuosity fluvio-deltaic channels draining a swampy coastal floodplain evolving upwards into a highly a

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Ning, Zhao, Gao Xia, Chen Zhongmin, Huang Jiangqin, and Zhang Guangya. "High Resolution Sequence Stratigraphy Correlation and Sedimentary Model of Braided Rivers: A Case on Paleogene Palogue Oilfield, South Sudan." E3S Web of Conferences 53 (2018): 03024. http://dx.doi.org/10.1051/e3sconf/20185303024.

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Complicated fluvial sands correlation and braided river models are still challenges for heterogeneous anisotropic reservoir evaluation for petroleum development in oilfields. Based on high-resolution sequence stratigraphy and sedimentology, core observation, and the analysis of logging and seismic data, high-resolution sequence stratigraphy framework of Paleogene Yabus formation of Palogue Oilfield, South Sudan is established, and sedimentary characteristics of braided rivers are analyzed, (1) In braided river deposits, channel bars are usually pro-gradating seawards and going thicker upwards.

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Lin, Zhipeng, Le Chen, Jingfu Shan, Tan Zhang, Qianjun Sun, and Yiwu Wang. "A New Sequence Stratigraphic Framework of Terrestrial Fluvial." Studies in Engineering and Technology 4, no. 1 (2017): 85. http://dx.doi.org/10.11114/set.v4i1.2521.

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Currently, the recognition and research on the classification of fluvial types mainly focus on the description and results of a series of indicators, such as the plane shape and sediment characteristics. However, there is limited literacy about how to demonstrate the fluvial types from the depositional process, especially less on sequence model of inland fluvial. Thus, this paper aims o propose a new kind of sequence stratigraphic framework, which is able to reflect the fluvial processes under the perspective of sequence stratigraphy. Accordingly, we use the principle of concrete analysis for

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Weckwerth, Piotr. "Palaeoslopes of Weichselian sand-bed braided rivers in the Toruń Basin (Poland): results of a palaeohydraulic analysis." Geologos 17, no. 4 (2011): 227–38. http://dx.doi.org/10.2478/v10118-011-0013-6.

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Palaeoslopes of Weichselian sand-bed braided rivers in the Toruń Basin (Poland): results of a palaeohydraulic analysis Palaeoslopes of Weichselian sand-bed braided rivers have been reconstructed for two stages of fluvial development in the Toruń Basin. (1) The palaeoslope of the ‘fossil’ fluvial succession (buried under Weichselian tills) was calculated on the basis of the median grain size and the Shields parameter. The hydraulic gradient thus found is comparable with the hydraulic gradient of the present-day river. (2) The second developmental stage of the Toruń Basin (as a apart of the Note

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Katona, Orsolya, György Sipos, Alexandru Onaca, and Florina Ardelean. "Reconstruction of Palaeo-hydrology and fluvial architecture at the Orosháza palaeo-channel of River Maros, Hungary." Journal of Environmental Geography 5, no. 1-4 (2012): 29–38. http://dx.doi.org/10.14232/jengeo-2012-43805.

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Several studies have addressed the impact of climate change and tectonic activity on fluvial systems. When investigating these systems palaeo-hydrological and geomorphological data on abandoned channels can yield valuable results. The main aim of our work was to reconstruct morphological conditions at the Orosháza palaeo-channel and to estimate the bankfull discharge which characterized the channel during its formation. There are several equations predicting bankfull discharge on the basis of planform parameters, but these only work for meandering rivers. In case of braided channels flow recon

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Daryono, Sapto Kis, Afrilita Afrilita, and Idarwati Idarwati. "Deposition Environment Interpretation of Lemat Formation in the West Tanjung Jabung, Jambi Province." Journal of Earth and Marine Technology (JEMT) 4, no. 2 (2024): 240–54. http://dx.doi.org/10.31284/j.jemt.2024.v4i2.5626.

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Abstract (sommario):

The study of facies analysis and interpretation of the depositional environment of the Lemat Formation located on Bukit Tigapuluh aimed to clarify the problems found in Paleogene sediments in the South Sumatra Basin. The results of research on facies analysis and interpretation of the depositional environment of the Lemat Formation will provide an explanation and description of the history of the formation and stratigraphic evolution of Paleogene-aged sedimentary rocks in the South Sumatra Basin as reflected in their lithological and facies characteristics. A detailed analysis of fluvial facie

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33

Alege, T. S., J. I. Omada, and K. Uchendu. "Field and Sedimentological Studies of Nataco-Banda Sediments of Lokoja Formation, Southern Bida Basin, Nigeria: Implication for Depositional Environment." Journal of Applied Sciences and Environmental Management 26, no. 11 (2022): 1835–42. http://dx.doi.org/10.4314/jasem.v26i11.15.

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Abstract (sommario):

The study area falls within the Lokoja Formation of the Southern Bida Basin. The objective of this study was to evaluate the field characteristics and sedimentological parameters of depositional environment of the Nataco-Banda Sediments of Lokoja Formation, Southern Bida Basin, Nigeria using appropriate techniques such as granulometric and pebble morphometric analysis. Field studies revealed a repeated alternating sequence of conglomeratic and pebbly to coarse-grained sandstone and overbank fine sediment that is indicative of a braided fluvial source while the presence of crossbedding is sugge

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34

Zhang, Zili, Xiaomin Zhu, Qi Li, Ruifeng Zhang, Jing Zhang, and Yi Huang. "Depositional characteristics of fluvial facies in gentle slope zone of lacustrine rift basins: The third member of the Dongying Formation in the Wen’an Slope of Baxian Sag, Bohai Bay Basin, China." Interpretation 8, no. 2 (2020): SF37—SF55. http://dx.doi.org/10.1190/int-2019-0125.1.

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Abstract (sommario):

We have integrated core, well logs, and seismic data to analyze fluvial types and reconstruct sediment dispersal patterns of the Dongying Formation in the Wen’an Slope, Bohai Bay Basin (China). We analyzed four meandering-braided fluvial successions from the Dongying Formation in the Wen’an Slope. The results indicate that the fluvial systems are dominantly northeast–southwest and consist of channel, channel bar, and flood plain subfacies, which can be further subdivided into six microfacies including braided channel, meandering channel, sandy channel bar, muddy channel bar, crevasse fan, and

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35

Hickin, Edward J. "Fluvial facies models: a review of Canadian research." Progress in Physical Geography: Earth and Environment 17, no. 2 (1993): 205–22. http://dx.doi.org/10.1177/030913339301700207.

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Abstract (sommario):

Canadian river scientists made significant contributions to the early development (1960-80) of fluvial facies models, particularly to those for braided rivers. More recent Canadian studies (1980-92) have centred on understanding the facies sedimentology of anastomosed and wandering gravel-bed rivers. River planform facies models are distinctly limited as indicators of fluvial style because of: (1) spurious environmental correlations; (2) the difficulty of river planform definition; (3) differential preservation potential of facies; (4) inadequate and unsystematic field sampling; (5) flawed sta

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36

Slomka, J. M., and C. H. Eyles. "Characterizing heterogeneity in a glaciofluvial deposit using architectural elements, Limehouse, Ontario, Canada." Canadian Journal of Earth Sciences 50, no. 9 (2013): 911–29. http://dx.doi.org/10.1139/cjes-2013-0020.

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Abstract (sommario):

Major hydrocarbon and groundwater reservoirs are commonly hosted within coarse-grained alluvial deposits that contain a high degree of sedimentary heterogeneity. This paper presents a detailed characterization of the sedimentary heterogeneity of fluvial–deltaic deposits using architectural element analysis (AEA). Sedimentological data collected from outcrop faces exposing Late Quaternary glaciofluvial deposits in southern Ontario, Canada, is recorded in 31 sedimentary logs. These logs are used to identify nine different facies types, including gravel facies (Gm, Gp, Gt), sand facies (Sr, Sp, S

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37

Li, Jie, Junqiang Xia, Meirong Zhou, Shanshan Deng, and Zenghui Wang. "Channel geometry adjustments in response to hyperconcentrated floods in a braided reach of the Lower Yellow River." Progress in Physical Geography: Earth and Environment 42, no. 3 (2018): 352–68. http://dx.doi.org/10.1177/0309133318776492.

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Abstract (sommario):

Hyperconcentrated floods with more than 200–300 kg/m3 sediment concentrations often occur in the Lower Yellow River (LYR) during flood seasons, which leads to unique fluvial processes in the braided reach of the LYR. The investigation of channel geometry adjustments in response to hyperconcentrated floods can not only help to gain a better understanding of associated fluvial processes, but also is significant for making flood control strategies in the braided reach. In this study, pre- and post-flood bankfull channel dimensions in the braided reach were calculated based on the observed cross-s

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38

VALENCIA, GUSTAVO L., LUIS A. BUATOIS, M. GABRIELA MÁNGANO, MARTIN E. FARINA, and VERÓNICA KRAPOVICKAS. "EVALUATING TRACE FOSSILS, FLUVIAL ARCHITECTURE, AND COLONIZATION PATTERNS IN CHANNEL AND OVERBANK DEPOSITS FROM THE MIOCENE VINCHINA FORMATION, WESTERN ARGENTINA." Palaios 39, no. 10 (2024): 363–83. http://dx.doi.org/10.2110/palo.2023-038.

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Abstract (sommario):

Abstract Trace-fossil distribution within the framework of three-dimensional fluvial architecture has been commonly overlooked. The Miocene Vinchina Formation in western Argentina preserves extensive outcrops of fluvial deposits, including architectural elements of both anastomosing and braided systems identified along the Quebrada de La Troya. Multistorey sandy channels, amalgamated sandy channels, heterolithic multistorey channels, channels with gravel bars, abandoned channels, muddy floodplains, crevasse splays, and crevasse channels have been identified. Of these, only the deposits of thre

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39

Martin, John H. "A review of braided fluvial hydrocarbon reservoirs: the petroleum engineer’s perspective." Geological Society, London, Special Publications 75, no. 1 (1993): 333–67. http://dx.doi.org/10.1144/gsl.sp.1993.075.01.20.

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40

Wang, Xixin, Fan Zhang, Shaohua Li, et al. "The Architectural Surfaces Characteristics of Sandy Braided River Reservoirs, Case Study in Gudong Oil Field, China." Geofluids 2021 (April 29, 2021): 1–12. http://dx.doi.org/10.1155/2021/8821711.

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Abstract (sommario):

The architecture analysis of the different orders sedimentary bodies is of great significance to the efficient development of oil and gas fields. In order to investigate the effects of the architectural interfaces on reservoir quality and heterogeneity, this study takes the Gudong oil field as a case to investigate the architectural characteristics of hierarchical bounding surfaces using detailed descriptions of core and wireline logs. Architectural models from the 7th-order to the 3rd-order are analyzed, and the developmental characteristics of the 5th-order braided river, 4th-order single sa

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41

Schwartz, Theresa M., Marieke Dechesne, and Kristine L. Zellman. "Evidence for variable precipitation and discharge from Upper Cretaceous–Paleogene fluvial deposits of the Raton Basin, Colorado–New Mexico, U.S.A." Journal of Sedimentary Research 91, no. 6 (2021): 571–94. http://dx.doi.org/10.2110/jsr.2020.081.

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Abstract (sommario):

ABSTRACT The Raton Basin of Colorado–New Mexico, USA, is the southeasternmost basin of the Laramide intraforeland province of North America. It hosts a thick succession (4.5 km or 15,000 ft) of Upper Cretaceous to Paleogene marine and continental strata that were deposited in response to the final regression of the Western Interior Seaway and the onset of Laramide intraforeland deformation. The Upper Cretaceous–Paleogene Raton and Poison Canyon formations were previously described as meandering river and braided river deposits that represented distal and proximal members of rivers that drained

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42

Waksmundzka, Maria I. "Braided-river and hyperconcentrated-flow deposits from the Carboniferous of the Lublin Basin (SE Poland) – a sedimentological study of core data." Geologos 18, no. 3 (2012): 135–61. http://dx.doi.org/10.2478/v10118-012-0008-y.

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Abstract (sommario):

Abstract Fining-upwards cyclothems found in five boreholes in the Carboniferous (Lower Bashkirian) of the Lublin Basin were analysed sedimentologically. It was established that the cyclothems represent fluvial deposits, and the lithofacies were grouped into lithofacies associations. Most lithofacies associations represent three types of sand-bed braided rivers: (1) high-energy, (2) deep and (3) distal sheetflood-affected. Other associations represent hyperconcentrated flows. Both coarse-grained (type I) and fine-grained (types IIa and IIb) occur among the fining-upward cyclothems. The formatio

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43

Marghani, Mouna M. A., and Abdulhadi Elsounousi Khalifa. "Formation Evaluation of the Lower Cretaceous Nubian Formation, East Sirt Basin, Libya." International Science and Technology Journal 35, no. 1 (2024): 1–38. http://dx.doi.org/10.62341/mafe3510.

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Abstract (sommario):

It is crucial to gain a deeper comprehension of the factors that influence reservoir quality in low-porous heterogeneous reservoirs for the purpose of petroleum exploration and production. This research examines the depositional and post-depositional influences on the sandstone reservoir quality of the Upper Nubian Member in the North Gialo Field, East Sirt Basin, Libya. To explore the connection between facies and petrophysical parameters and to determine the impact of fractures on enhancing the pore system in low-porous reservoirs, core analysis, petrography analysis, and petrophysical measu

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44

Weckwerth, Piotr, Krzysztof Przegiętka, Alicja Chruścińska, Barbara Woronko, and Hubert Oczkowski. "Age and sedimentological features of fluvial series in the Toruń Basin and the Drwęca Valley (Poland)." Geochronometria 38, no. 4 (2011): 397–412. http://dx.doi.org/10.2478/s13386-011-0038-1.

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Abstract (sommario):

Abstract The deposits of the Toruń Basin are dominated by a few-metre thick sand series which fill up buried valley-like depressions. In many cases they underlie the Weichselian till which builds up the ice marginal streamway (pradolina) terraces or they are exposed at the basin slopes. As the results of the geological and sedimentological studies, as well as of the dating of the deposits at the sites in the Toruń Basin indicate, the deposits include two fluvial series accumulated before the advancement of the Leszno Phase ice sheet, i.e. in Middle Weichselian and at the beginning of Late Weic

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45

Bukar, Shettima, Mohammed Bukar, Asabe Kuku, Bintu Shettima, and Ishaku H. Kamale. "Incised Valley Depositional System of the Cretaceous Yolde Formation of the Gongola Sub-basin Northern Benue Trough N.E. Nigeria." European Journal of Engineering Research and Science 5, no. 8 (2020): 870–76. http://dx.doi.org/10.24018/ejers.2020.5.8.1999.

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Abstract (sommario):

This research was carried out in the Gongola Sub-basin of the Northern Benue Trough aimed at deciphering of the paleo-depositional environment of the Yolde Formation based on facies on facies analysis. Six lithofacies were identified to include trough crossbedded sandstone facies (St), massive bedded sandstone facies (Sm), planar crossbedded sandstone facies (Sp), ripple laminated sandstone facies (Sr), parallel sandstone facies (Sl) and mudstone facies (Fm). These build into two facies association of fluvial channel and tidally influenced fluvial channel facies associations. The fluvial succe

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46

Bukar, Shettima, Mohammed Bukar, Asabe Kuku, Bintu Shettima, and Ishaku H. Kamale. "Incised Valley Depositional System of the Cretaceous Yolde Formation of the Gongola Sub-basin Northern Benue Trough N.E. Nigeria." European Journal of Engineering and Technology Research 5, no. 8 (2020): 870–76. http://dx.doi.org/10.24018/ejeng.2020.5.8.1999.

Testo completo

Abstract (sommario):

This research was carried out in the Gongola Sub-basin of the Northern Benue Trough aimed at deciphering of the paleo-depositional environment of the Yolde Formation based on facies on facies analysis. Six lithofacies were identified to include trough crossbedded sandstone facies (St), massive bedded sandstone facies (Sm), planar crossbedded sandstone facies (Sp), ripple laminated sandstone facies (Sr), parallel sandstone facies (Sl) and mudstone facies (Fm). These build into two facies association of fluvial channel and tidally influenced fluvial channel facies associations. The fluvial succe

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47

Gao, Peng, Barbara Belletti, Hervé Piégay, Yuchi You, and Zhiwei Li. "Can Water-Detection Indices Be Reliable Proxies for Water Discharges in Mid-Sized Braided Rivers Using Coarse-Resolution Landsat Archives?" Remote Sensing 16, no. 1 (2023): 137. http://dx.doi.org/10.3390/rs16010137.

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Abstract (sommario):

The use of water detection (WD) indices to infer daily discharge (Qd) has a great potential to enrich needed hydrological data for understanding fluvial processes driving the morphological changes of braided rivers. However, no consensus has been reached on which one stands out for use in mid-sized braided rivers. In this study, we compared the physical characteristics of three most commonly used WD indices, the Normalized Difference Water Index (NDWI), Modified Normalized Difference Water Index (MNDWI), and Normalized Difference Moisture Index (NDMI), for two mid-sized braided reach segments

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48

Lakshminarayana, G. "Gondwana Sedimentation in the Chintaiapudi Sub-basin Godavari Valley, Andhra Pradesh." Journal Geological Society of India 46, no. 4 (1995): 375–83. http://dx.doi.org/10.17491/jgsi/1995/460408.

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Abstract (sommario):

Abstract A 3000 m thick Gondwana lithic fill consisting of multifacies associations were preserved in a NW-SE oriented intracratonic Chintalapudi sub-basin set across the Eastern Ghat Complex (EGC). Sedimentation commenced with the deposition of diamictite-rhythmite sequence of the Talchir Formation in glacio-lacustrine environment. The succeeding sandstone-coal cyclothems of the Barakar Formation were formed in fluvial-coal swamp complex. The fluvial streams flowed across the EGC, originating somewhere in the southeast beyond the East Coast of India. Phase-wise upliftment of the EGC during Me

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49

Oyanyan, Raphael Oaikhena, Modestus Chijioke Ohaegbulem, Christian Chukwudi Agbo, and Nonyelum Stella Iloanya. "SEDIMENTARY ARCHITECTURAL ELEMENTS AND SANDY BRAIDED FLUVIAL SUCCESSIONS IN AJALI SANDSTONE RIDGES, WESTERN AFIKPO BASIN, UTURU, NIGERIA." Earth Science Malaysia 5, no. 1 (2020): 49–57. http://dx.doi.org/10.26480/esmy.01.2021.49.57.

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Abstract (sommario):

Lithofacies, bounding surfaces and sedimentary architectural elements exposed in two ridges at Uturu being quarried for construction sands were analysed to determine the paleoenvironment of deposition and the factors that control the deposition of sand units. Mainly outcropped is Ajali Formation overlying locally exposed Mamu Formation in Western Afikpo basin. Lithofacies identified include: Trough cross bedded medium- to coarse-grained (St), Planar cross bedded fine- to coarse-grained sandstone (Sp), Small scale planar cross bedded sandstone (SSp), Lenticular mudstone (Fm), Heterolithic sands

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50

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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Abstract (sommario):

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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