T184 The Dynamics of Tectono-Sedimentary Systems During Basin Formation and Fill (Posters)

Monday, 23 October 2017
9:00 AM - 6:30 PM
Halls 4EF

CHARACTERISTICS OF LITHOFACIES PALAEOGEOGRAPHY AND SEDIMENTARY FILLING RESPONSE OF TRIASSIC IN TARIM BASIN

Paper number: T184-12
Program: Technical Sessions
Time: 9:00 AM – 6:30 PM

Authors

  • Jingyu Zhang Presenting Author
    China University of Geosciences ( Wuhan), wuhan
  • Wei Wei
    China University of Geosciences ( Wuhan), wuhan
  • Xiaochen Liu
    China University of Geosciences ( Wuhan), wuhan
  • Qi Yu
    China University of Geosciences ( Wuhan), wuhan
  • Xueying Zhu
    China University of Geosciences ( Wuhan), wuhan
  • Dingkun Lei
    China University of Geosciences ( Wuhan), wuhan
  • Huawu Mao
    China University of Geosciences ( Wuhan), wuhan

Abstract

Based on an integrated investigation on well logging, seismic data, the characteristics of lithofacies palaeogeography and sedimentary filling response of main interface of Triassic in Tarim basin was analyzed in detail, through which, the sedimentary model was established.

The results show that during the Triassic period, the research area develops mainly lacustrine and deltas deposits. The paleogeographic units of this period include deep lake, semi-deep lake, shore-shallow lake, shore plain, braided delta, as well as fan delta. The uplift area around basin getting eroded, which act as the source to the central depression area of the basin. Fan delta developed in the submountain region of northern Kuqa Depression and two sides of Yakela fault block. Braided river delta developed in the Manjiaer Depression and southern central Tarim Baisn. Shore-shallow lake, semi-deep lake and deep lake transitional developed to the central basin. Inheritance character of Triassic in Tarim basin has been observed. In late Triassic, the lake began to shrink toward the north because of the collision of Qiangtang block and Tarim plate in the southern margin of Tethys and the depositional center moved northwards.

Geological Society of America Abstracts with Programs. Vol. 49, No. 6

doi: 10.1130/abs/2017AM-298719

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