2008•Journal of Mineralogy and PetrologyRequires access

TECTONIC ANALYSIS FOR THE WENCHUAN GREAT EARTHQUAKE IN THE SICHUAN PROVINCE

Lan Jiang-hua

Abstract

The Wenchuan great earthguake(M=8,31.0°N,103.4°E,Yingxiu,Wenchuan)occurring on May 15,2008 is typical of a main-aftershock.It was considered,on the basis of tectonic analysis,that the Wenchuan great earthquake was a structural earthquake.This earth-quake was controlled by the intense activity of the Longmenshan fracture zone and its dynamic source is resulted from the collision of India plate and Eurasian plate.Though,Chengdu is very close to the epicenter of the Wenchuan earthquake,the effect of quake on this big city is limit because Chengdu plain is located in a relatively stable block.

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Key concepts: Epicenter, Quake (natural phenomenon), Geology, Seismology, Aftershock, Tectonics