The formation and evolution of Sudeerte tectonic belt in Beier depression

XIE Zhao-han; XIAN Di; LUO Jing-shuang; YANG Bao-quan; LE Jing; WANG Shao-bo

doi:10.12029/gc20160413

2016 Vol. 43, No. 4

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Article navigation > Geology in China > 2016 > (4): 1266-1279

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XIE Zhao-han, XIAN Di, LUO Jing-shuang, YANG Bao-quan, LE Jing, WANG Shao-bo. The formation and evolution of Sudeerte tectonic belt in Beier depression[J]. Geology in China, 2016, (4): 1266-1279. doi: 10.12029/gc20160413

Citation:

XIE Zhao-han, XIAN Di, LUO Jing-shuang, YANG Bao-quan, LE Jing, WANG Shao-bo. The formation and evolution of Sudeerte tectonic belt in Beier depression[J]. Geology in China, 2016, (4): 1266-1279. doi: 10.12029/gc20160413

The formation and evolution of Sudeerte tectonic belt in Beier depression

1.
Laboratory of CNPC Fault Controlling Reservoir, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;The State Key Laboratory Base of Unconventional Oil and Gas Accumulation and Exploitation, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;Science and Technology Innovation Team in Heilongjiang Procince “fault Deformation, Sealing and Fluid Migration”, Daqing 163318, Heilongjiang, China
2.
CNOOC Research Institute, Beijing 100028, China
3.
NO.2 Oil production Plant of Daqing oilfield Company Ltd., Daqing 163256, Heilongjiang, China
4.
Exploration and Development Research Institute, PetroChina Dagang Oilfield Company, Tianjin 300280, China

Received Date: 05 May 2015

Revised Date: 20 July 2015

Publish Date: 24 August 2016

Abstract

Abstract

The Sudeerte tectonic belt is one of the most important hydrocarbon accumulations in Beier depression of Hailar basin. From the detailed structural geometry and kinematics analysis of Sudeerte tectonic belt and peripheral Beixi subdepression and Beizhong subdepression using balanced section technique and herringbone truss method based on inclined shear model, the authors detected that the special structure style was caused by a series of extensions:the direction of extension in Nantun Formation was nearly NW-striking, forming an EW-trending rift basin group, then the direction changed to northwest in a short period of early Damoguaihe Formation stretching and continued thermal depression to the present. The boundary faults in the east of Beizhong subdepression were the major boundary faults of Beier depression in the extension of early Damoguaihe Formation, and show a ramp-flat listric feature. Sudeerte tectonic belt is "roll-over anticline" formed in the upper part of the first fault floor due to the combined effect of gravity and geometry of boundary fault. It is thus held that the mechanism of anticline type of Sudeerte tectonic belt is bending fold rather than buckle fold.
- Beier depression /
- Sudeerte tectonic belt /
- tectonic evolution /
- ramp-flat listric fault /
- roll-over anticline