Characteristics and evolution of lacustrine turbidite of Chang-7 Member of Yanchang Formation in northern Shaanxi |
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| Authors: | PANG Jungang LI Wenhou XIAO Li School of Petroleum Resources Xi'an Shiyou University Xi'an China Geological |
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| Institution: | PANG Jungang1,LI Wenhou2,3 , XIAO Li41. School of Petroleum Resources,Xi'an Shiyou University,Xi'an 710065,China2. Geological Department,Northwest University,Xi'an 710069,China3. State Key Laboratory of Continental Dynamics,China4. Geological Research Institute of Shengli Oilfield Co. Ltd.,SINOPEC,Dongying 257015,Sh,ong,China |
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| Abstract: | Lacustrine turbidite of Chang-7 Member in the studied area consists of siltstone and fine sandstone with respect to grain size,which is feldspathic lithic sandstone,syrosem arkose and arkose with respect to mineral constitution affected by provenance. There are such apparent signatures as lithology,sedimentary structure,sedimentary sequence and well logs,to recognize turbidite. During the paleogeographic evolution of Chang-7 Member,lake basin and deep lake are both at their maximum extent during Chang-73 st... |
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| Keywords: | Chang-7 Member turbidite paleogeographic evolution northern Shaanxi Yanchang Formation |
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