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LU Jin-bo, WANG Ying-min, ZHANG Lei, WANG Gai-yun, GU Xiu-mei. Sequence stratigraphy and depositional systems in the Caohu depression, Tarim Basin, Xinjiang[J]. Sedimentary Geology and Tethyan Geology, 2011, 31(1): 1-5.
Citation: LU Jin-bo, WANG Ying-min, ZHANG Lei, WANG Gai-yun, GU Xiu-mei. Sequence stratigraphy and depositional systems in the Caohu depression, Tarim Basin, Xinjiang[J]. Sedimentary Geology and Tethyan Geology, 2011, 31(1): 1-5.

Sequence stratigraphy and depositional systems in the Caohu depression, Tarim Basin, Xinjiang

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  • Received Date: May 27, 2010
  • Revised Date: August 29, 2010
  • Published Date: March 29, 2011
  • The Jurassic strata in the Caohu depression, Tarim Basin, Xinjiang are divided, on the basis of well logs and regional tectonic evolution, into two third-order sequences J-SQ1 and J-SQ2. During the deposition of J-SQ1 sequences, the climates were warm and humid. The sequence displays the complete rising-falling semicyclic deposits. Till the deposition of J-SQ2 sequences, the climates turned into hot and semiarid ones. The sequences display only the rising semicyclic deposits, and consists of oxidized lacustrine depositional systems in which the littoral-shallow lacustrine sand-mud beach deposits are developed. The braided channel sandstones in J-SQ1 sequences are believed to be the favourable reservoir rocks in the study area due to tremendous thickness, better physical properties and moderate to thick overlying lacustrine mudstone.
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