塔里木盆地塔东凸起西部中上奥陶统地震层序与海底扇沉积

钟广法; 刘学锋; 邓常念; 万里皋

Volume 31 Issue 3

May 2006

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Article Navigation > Earth Science > 2006 > 31(3): 366-371

ZHONG Guang-fa, LIU Xue-feng, DENG Chang-nian, WAN Li-gao, 2006. Middle-Upper Ordovician Seismic Sequences and Submarine Fan Deposits in West Tadong Uplift, Tarim Basin, Northwest China. Earth Science, 31(3): 366-371.

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Middle-Upper Ordovician Seismic Sequences and Submarine Fan Deposits in West Tadong Uplift, Tarim Basin, Northwest China

1.
State Key Labor atory of Marine Geology, Tongji University, Shanghai 200092, China
2.
School of Communication and Information Engineering, Shanghai University, Shanghai 200436, China
3.
UrumqiBranch of Geophysical Research Institute, Bureau of Geophysical Prospecting, CNPC, Urumqi 830016, China

Received Date: 2005-07-20
Publish Date: 2006-05-25

Abstract

Abstract

Middle-Upper Ordovician sequence stratigraphy and sedimentary evolution are studied based on the interpretation of regional seismic data in west Tadong uplift, Tarim basin, Northwest China. Two seismic sequences are identified in the Middle-Upper Ordovician, and a group of seismic reflection units with mounded geometry and clinoforms are confirmed as stacked submarine fan deposits calibrated by cores and lithological logs. The submarine fan deposits mainly consist of seven types of lithofacies, which are massive conglomerates and sandstones, normal-graded sandstones and siltstones, parallel- bedded sandstones and siltstones, rippled siltstones, convolute siltstones, horizontal-laminated silty shales, and massive or graded shales, respectively. The submarine fans were sourced from the Middle-Late Ordovician island arcs located to the south of our study area. The findings of this study are significant to hydrocarbon exploration in the Tarim basin.
- seismic interpretation,
- sequence,
- submarine fan,
- turbidite,
- Ordovician,
- Tarim basin

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References(27)

References

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