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A Cretaceous Desert-Playa Sedimentary System Controlled the Potash Formation in the Simao Basin 被引量:5
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作者 WU Chihua LIU Chenglin +2 位作者 SHEN Lijian WANG Jiuyi ZHANG Hua 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第3期1143-1144,共2页
Objective The Simao Basin in Yunnan Province has developed Cretaceous evaporite-bearing clastic deposits, including the Mangang and Mengyejing Formations which were originally interpreted as fluvial and lacustrine dep... Objective The Simao Basin in Yunnan Province has developed Cretaceous evaporite-bearing clastic deposits, including the Mangang and Mengyejing Formations which were originally interpreted as fluvial and lacustrine deposits. The Mangang Fm. composed of well-rounded quartz sandstones, were commonly considered as the bottom part of the Mengyejing salt series. Dttring last decades, 展开更多
关键词 A Cretaceous Desert-Playa sedimentary System Controlled the Potash formation in the Simao Basin is for as were that of
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High resolution continuous sedimentary records of Upper Cretaceous obtained from the continental drilling(SK-1) borehole in Songliao Basin:Sifangtai and Mingshui Formations 被引量:5
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作者 Guodong Wang Rihui Cheng +4 位作者 Pujun Wang Youfeng Gao Chengshan Wang Yanguang Ren Qinghua Huang 《Geoscience Frontiers》 SCIE CAS CSCD 2015年第6期895-912,共18页
The Sifangtai and Mingshui formations were continuously cored in the SK-1 n borehole(China Cretaceous Continental Scientific Drilling-SongKe1-the north borehole).The core is 767.96 m long,and the recovery is 94.7%.T... The Sifangtai and Mingshui formations were continuously cored in the SK-1 n borehole(China Cretaceous Continental Scientific Drilling-SongKe1-the north borehole).The core is 767.96 m long,and the recovery is 94.7%.The ages of the formations range from middle Campanian to Danian.The sequence and process of lithology-lithofacies and cyclic stratigraphy were described in detail.Eight litho-types compose the Sifangtai Formation,and 15 litho-types compose the Mingshui Formation.Deposition was predominantly in meandering river and lacustrine environments,including 10 microfacies in the Sifangtai Formation and 15 microfacies in the Mingshui Formation.The complete sequence is composed of 535 m-scale cycles(sixth-order cycle),152 fifth-order cycles,42 fourth-order cycles and five third-order cycles.The centimeter-scale description of the section revealed some previously unknown horizons such as a special type of mudstone,marl,volcanic ash and favorable sand reservoirs in the formations.The new-found evidence is very important for the interpretation of the evolution of the basin,conditions such as lake oxic events,the K/Pg boundary,tectonism in the late sag basin stage,and the reservoir-cap rock assemblages in the shallow stratigraphy. 展开更多
关键词 Sifangtai formation and Mingshui formation sedimentary facies Cyclostratigraphy SK-1n Middle Campanian-Danian Songliao Basin
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Sedimentary characteristics and processes of the Paleogene Dainan Formation in the Gaoyou Depression, North Jiangsu Basin, eastern China 被引量:2
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作者 Xia Zhang Chun-Ming Lin +3 位作者 Yong Yin Ni Zhang Jian Zhou Yu-Rui Liu 《Petroleum Science》 SCIE CAS CSCD 2016年第3期385-401,共17页
In this paper,the type,vertical evolution,and distribution pattern of sedimentary facies of the Paleogene Dainan Formation in the Gaoyou Depression of the North Jiangsu Basin are studied in detail.Results show that fa... In this paper,the type,vertical evolution,and distribution pattern of sedimentary facies of the Paleogene Dainan Formation in the Gaoyou Depression of the North Jiangsu Basin are studied in detail.Results show that fan delta,delta,nearshore subaqueous fan,and lacustrine facies developed during the Dainan Formation period and their distribution pattern was mainly controlled by tectonics and paleogeography.The fan delta and nearshore subaqueous fan facies predominantly occur in the southern steep slope region where fault-induced subsidence is thought to have created substantial accommodation,whereas the delta facies are distributed on the northern gentle slope which is thought to have experienced less subsidence.Finally,the lacustrine facies is shown to have developed in the center of the depression,as well as on the flanks of the fan delta,delta,and nearshore subaqueous fan facies.Vertically,the Dainan Formation represents an integrated transgressiveregressive cycle,with the E2d1being the transgressive sequence and the E2d2being the regressive sequence.This distribution model of sedimentary facies plays an important role in predicting favorable reservoir belts for the Dainan Formation in the Gaoyou Depression and similar areas.In the Gaoyou Depression,sandstones of the subaqueous distributary channels in the fan delta and the subaqueous branch channels in the delta are characterized by physical properties favorable for reservoir formation. 展开更多
关键词 sedimentary facies Distribution pattern sedimentary evolution Dainan formation Gaoyou Depression North Jiangsu Basin
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Extensional Tectonics, Rifting, Formation of Sedimentary Basins, Cretaceous Volcanism, Emplacement of Dyke Swarms and Development of Hydrocarbon Pools: Case Studies from Peninsular India and Indian Ocean Region
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作者 K.S.MISRA 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第S1期61-62,共2页
Prolonged extensional regime in peninsular India resulted in formation of rift and grabens,elongated basins and Gondwana sedimentation along them.Downward progression of rift related faults caused decompression
关键词 Extensional Tectonics formation of sedimentary Basins RIFTING Cretaceous Volcanism Emplacement of Dyke Swarms and Development of Hydrocarbon Pools
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GEOTHERMAL EVOLUTION OF THE DIWA-TYPE SEDIMENTARY BASIN AND ITS CONTROLLING ON THE FORMATION OF OIL/GAS POOLS
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《Geotectonica et Metallogenia》 1994年第Z2期113-115,共3页
关键词 GAS GEOTHERMAL EVOLUTION OF THE DIWA-TYPE sedimentary BASIN AND ITS CONTROLLING ON THE formation OF OIL/GAS POOLS ITS
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Formation of the Devonian Fengtai Hydrothermal Brine Basin and the Metallogeny of Gold and Lead-Zinc Mineralizations in Shaanxi
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作者 ZHU Huaping GUO Jian +2 位作者 LIU Ping LI Falin HUANG Changqing 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2000年第3期500-503,共4页
The study of the relationships between the hydrothermal sedimentary formations and the gold and lead-zinc mineralizations in the Devonian Fengtai basin in Shaanxi shows that there was a hydrothermal brine sedimentary ... The study of the relationships between the hydrothermal sedimentary formations and the gold and lead-zinc mineralizations in the Devonian Fengtai basin in Shaanxi shows that there was a hydrothermal brine sedimentary event which was inserted into the normal sedimentary background from the late Middle Devonian to the early Late Devonian. This event is closely related to gold and lead-zinc mineralizations in this area. 展开更多
关键词 hydrothermal sedimentary formation gold and lead-zinc mineralizations Devonian Fengtai basin SHAANXI
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Hydrological Modeling of Aquifers and Their Ground Water Potentials: Implications for Water Resources Planning and Management in Parts of Obio/Akpor L.G.A, Rivers State, Nigeria
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作者 Vincent Ezikornwor Weli Jimmy Adegoke Ogah Celestine Ndidi 《Journal of Water Resource and Protection》 2016年第3期372-381,共10页
This study examined the hydrological modeling of aquifers and their ground water potentials for the purposes of water resources planning and management. This was done using the electrical resistivity method employing ... This study examined the hydrological modeling of aquifers and their ground water potentials for the purposes of water resources planning and management. This was done using the electrical resistivity method employing the schlumberger electrode configuration at randomly selected stations to obtain the thicknesses and resistivities of each layer and depth to the presumably conglomeratic sand stone and its resistivity. Findings showed that the top soil layer resistivity values vary from 59.3 to 248.4 ohm-m and thickness of 0.6 to 3.9 m. The second layer has resistivity values ranging from 45.0 to 743.5 ohm-m and a thickness range of 1.5 to 13.8 m. The wet sand is characterized by resistivity values ranging from 144.8 to 1930.2 ohm-m and a thickness range of 3.8 to 65.8 m. The conglomeratic sand/sand stone has resistivity values ranging from 55.8 to 7719.8 ohm-m. The depth to this bottom layer varies from 6.6 to 89.5 m. Findings indicate that the entire profile is a sedimentary formation represented by lithological units of sand and clayey sand which make for a good groundwater potentials. However, the groundwater potential zones of the study area in terms of transmisivity revealed four distinct classes representing “very good” (Mgbuosimini, Rumuigbo, Okporo, Rumuomasi and Rumuodara), “good” (Alakahia, Rumuodomaya, Oginigba and Rumuola), “moderate” (Aluu, Rumuekeni, Rumuokoro, Rumuobiakani and Rumueme), and “low” (Ogbogoro, Ozuoba, Akpajio, Elelenwo, Eliozu, Rumuepirikon, Rumuokwuta, Rumuebekwe and Rumurolu) groundwater potential in the area. Well logging should therefore be incorporated in borehole development process for safe and sustainable yield of groundwater in Obio/Akpor. 展开更多
关键词 Aquifers Water Resources sedimentary formation Underground Water and Obio/Akpor
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