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Article Navigation >  Acta Sedimentologica Sinica  > 2015  >  33(4): 764-772

HAN Jie, WU Xiao, PAN WenQing, JIANG Jie, ZHANG Min. Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin[J]. Acta Sedimentologica Sinica, 2015, 33(4): 764-772. doi: 10.14027/j.cnki.cjxb.2015.04.015
Citation: HAN Jie, WU Xiao, PAN WenQing, JIANG Jie, ZHANG Min. Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin[J]. Acta Sedimentologica Sinica, 2015, 33(4): 764-772. doi: 10.14027/j.cnki.cjxb.2015.04.015
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Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin

doi: 10.14027/j.cnki.cjxb.2015.04.015
  • 1.

    Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000;

  • 2.

    College of Geoscience, China University of Petroleum(Beijing), Beijing 102249

  • Received Date: 2014-04-28
  • Rev Recd Date: 2014-10-28
  • Publish Date: 2015-08-10
  • The Caledonian movement impacted Tarim Basin and its periphery in Ordovician, during which the structure and sedimentary evolution were intensively transformed. The lithology, facies and biofacies began to segregate in Bachu, Keping and Wushi outcrop area of northwest Tarim basin. The sedimentary environment was apparently changed. The essential characteristics were as follows. (1) The Yingshan Group glacis sedimentation during Lower-Middle Ordovician was developed under pull-apart background with remote precipitous characteristic. It was divided into inner, middle and outer gentle slope from south to north in plain. And aquifer deepened from bottom to top in vertical. (2) The Yijianfang and Tumuxiuke of Middle-Upper Ordovician were the key period of sedimentary and structure transformation. The Aman platform trough was formed. Sedimentary framework was evolved from weak edge gentle slope to uniform gentle slope. It overall exhabited South Slow North Steep. (3) The black shale of Saergan group which sedimented in Aman platform trough, probably extended some distance to Awati Depression. It belongs to good source rock and has potential oil and gas exploration area in early and later strata.
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  • Received:  2014-04-28
  • Revised:  2014-10-28
  • Published:  2015-08-10

Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin

doi: 10.14027/j.cnki.cjxb.2015.04.015
  • 1. Research Institute of Exploration & Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000;
  • 2. College of Geoscience, China University of Petroleum(Beijing), Beijing 102249
  • Received Date: 2014-04-28
  • Rev Recd Date: 2014-10-28
  • Publish Date: 2015-08-10

Abstract: The Caledonian movement impacted Tarim Basin and its periphery in Ordovician, during which the structure and sedimentary evolution were intensively transformed. The lithology, facies and biofacies began to segregate in Bachu, Keping and Wushi outcrop area of northwest Tarim basin. The sedimentary environment was apparently changed. The essential characteristics were as follows. (1) The Yingshan Group glacis sedimentation during Lower-Middle Ordovician was developed under pull-apart background with remote precipitous characteristic. It was divided into inner, middle and outer gentle slope from south to north in plain. And aquifer deepened from bottom to top in vertical. (2) The Yijianfang and Tumuxiuke of Middle-Upper Ordovician were the key period of sedimentary and structure transformation. The Aman platform trough was formed. Sedimentary framework was evolved from weak edge gentle slope to uniform gentle slope. It overall exhabited South Slow North Steep. (3) The black shale of Saergan group which sedimented in Aman platform trough, probably extended some distance to Awati Depression. It belongs to good source rock and has potential oil and gas exploration area in early and later strata.

HAN Jie, WU Xiao, PAN WenQing, JIANG Jie, ZHANG Min. Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin[J]. Acta Sedimentologica Sinica, 2015, 33(4): 764-772. doi: 10.14027/j.cnki.cjxb.2015.04.015
Citation: HAN Jie, WU Xiao, PAN WenQing, JIANG Jie, ZHANG Min. Ordovician Sedimentary Facies Characteristic in Bachu-Wushi Outcrop Area of Northwest Tarim Basin[J]. Acta Sedimentologica Sinica, 2015, 33(4): 764-772. doi: 10.14027/j.cnki.cjxb.2015.04.015
shu

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