Control of Himalayan Fracture Movement over Sedimentary Sequences in Qiangtang Basin

Abstract

Abstract: This paper discusses how the Himalayan episodic deformation and fracture movement controls sedimentation in Qiangtang Basin. It is believed that the Qiangtang Block has at least three episode deformations in Himalayan Period, base on analyzing the sedimentary sequence and its horizontal distribution in the Basin. The first one occurred in Miocene; development of NWW-NE conjugated strike-slip faults controlled the formation and transformation of Kangtuo Formation. The second one occurred in early Pliocene; the NWWfaults in NWW-NE conjugated faults were strengthened, which controlled the formation of strata in Suonahu Formation. The third one occurred in the end of Pliocene; South-North tension fractures were produced, which controlled the distribution of volcanic rocks and Pleistocene in Shipingding Formation. This paper also briefly discusses the effect of fracture movement on the preservation conditions of oil and gas

Key words: Qiangtang Basin, Himalayan, fracture movement, sedimentary formation, tectonic evolution

CLC Number:

P618.13

Zhang Jinwei and Wei Chunguang. Control of Himalayan Fracture Movement over Sedimentary Sequences in Qiangtang Basin[J]. China Petroleum Exploration, 2011, 16(2): 30-34,86.

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Control of Himalayan Fracture Movement over Sedimentary Sequences in Qiangtang Basin

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