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Science China Earth Sciences

, Volume 61, Issue 9, pp 1195–1203 | Cite as

Circumjacent distribution pattern of the Lungmachian graptolitic black shale (early Silurian) on the Yichang Uplift and its peripheral region

  • Xu Chen
  • Qing Chen
  • Yongyi Zhen
  • Hongyan Wang
  • Linna Zhang
  • Junpeng Zhang
  • Wenhui Wang
  • Zhaohui Xiao
Research Paper

Abstract

Stratigraphic hiatuses of variable time intervals within the Rhuddanian to early Aeronian (Llandovery, Silurian) are identified in the area bordering East Chongqing, West Hubei and Northwest Hunan in central China. Their distribution suggested the existence of a local uplift, traditionally named the Yichang Uplift. The diachronous nature of the basal black shale of the Lungmachi Formation crossing different belts of this Uplift signifies the various developing stages during the uplifting process. The present paper defines the temporal and spatial distribution pattern of the Yichang Uplift, which might be one of the important controlling factors for the preservation and distribution of the shale gas in this region, as it has been demonstrated that the shale gas exploration is generally less promising in the areas where more of the basal part of the Lungmachi Formation is missing. Therefore, better understanding of the circumjacent distribution pattern developed throughout the uplifting process may provide the important guidance for the shale gas exploration. The present work is a sister study to the published paper, “Stage-progressive distribution pattern of the Lungmachian black graplolitic shales from Guizhou to Chongqing, Central China”. These two studies thus provide a complete Ordovician-Silurian black shale distribution pattern in the Middle and Upper Yangtze, a region with the major shale gas fields in China.

Keywords

Yichang Uplift Rhuddanian Aeronian Graptolite biozonation Circumjacent distribution pattern 

Notes

Acknowledgements

We thank the reviewers for their constructive comments and suggestions. This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB26000000), the National Natural Science Foundation of China (Grant Nos. U1562213 and 41502025) and the National Science and Technology Major Project of China (Grant No. 2017ZX05035002-001). Zhen Yongyi publishes with permission of the Executive Director, Geological Survey of New South Wales.

Supplementary material

11430_2017_9222_MOESM1_ESM.pdf (4.7 mb)
Appendix 1 Biostratigraphic descriptions of the sections and drill cores

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xu Chen
    • 1
    • 2
  • Qing Chen
    • 1
  • Yongyi Zhen
    • 3
  • Hongyan Wang
    • 4
  • Linna Zhang
    • 5
  • Junpeng Zhang
    • 1
  • Wenhui Wang
    • 6
  • Zhaohui Xiao
    • 7
  1. 1.CAS Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjingChina
  2. 2.Academician Studio, Zhejiang Nuclear Industry Geological Survey TeamHuzhouChina
  3. 3.Geological Survey of New South WalesW. B. Clarke Geoscience CentreLondonderryAustralia
  4. 4.Research Institute of Petroleum Exploration & DevelopmentPetroChinaLangfangChina
  5. 5.State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjingChina
  6. 6.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, School of Geosciences and Info-PhysicsCentral South UniversityChangshaChina
  7. 7.Huadian Central China Green Energy Co., LTDWuhanChina

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