酒泉盆地北侧金塔南山北缘断裂西段全新世活动特征

EARTHQUAKE ›› 2012, Vol. 32 ›› Issue (3): 59-66.

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Active Faulting Features in Holocene of the West Segment of the Jintananshan North-margin Fault at the North of Jiuquan Basin

HE Wen-gui^1,2, YUAN Dao-yang^1,2, WANG Ai-guo^1,2 LIU Xing-wang^1,2, ZHANG Bo^1,2

1. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China;
2. Lanzhou Base of Institute of Earthquake Science, CEA, Lanzhou 730000, China

Received:2011-10-21 Revised:2012-02-02 Published:2021-08-19

Abstract

Abstract: Jintananshan north-margin fault is an important active fault at the north of Jiuquan Basin. The fault starts from the northwest of Wutongdun in the west, then passes through Changshan, Guagoushan, Yuanyangchishuiku, Dakouzi, and ends in the east of Hongdun. The main trending is near EW with length 60 km, dip is south or north, and the dip angle is 60~80 degree. The active manner of the fault is mainly thrust with left-lateral strike-slip features. According to field geomorphic investigation and trench excavation, we found strong active evidence at the west segment of the Jintananshan north-margin fault. Paleo-earthquakes have also be found there.

Key words: Active Faulting, Jintananshan north-margin fault, Paleo-earthquake

CLC Number:

P315.7

HE Wen-gui, YUAN Dao-yang, WANG Ai-guo LIU Xing-wang, ZHANG Bo. Active Faulting Features in Holocene of the West Segment of the Jintananshan North-margin Fault at the North of Jiuquan Basin[J]. EARTHQUAKE, 2012, 32(3): 59-66.

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Active Faulting Features in Holocene of the West Segment of the Jintananshan North-margin Fault at the North of Jiuquan Basin

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