Syn-depositionalDeformation Structures by Earthquake Related to Volcanic Activity of the Late Pleistocene in Weizhou Island, Be ihai City, Guangxi

DU Yuan-sheng; PENG Bing-xia; HAN Xin

The Late Pleistocene Huguangyan Formation in Weizhou island, Beihai city, Guangxi consists of volcanic clastic rocks. Volcanic rocks develop near Huguangyan Formation. Near the crater, a series of syn-depositional deformation structures are developped in the Huguangyan Formation, which includes seismic micro2fractures ( tensile-shear, tensile, conjugated and ladder fractures), micro-corrugated laminations, sinking rockfall structures and sand-muddy veins. These structures are believed resulting from earthquake related to volcanic activity of the Late Pleistocene.

Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074

Received Date: 2004-09-27

Rev Recd Date: 2004-11-20

Publish Date: 2005-06-10

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Abstract: The Late Pleistocene Huguangyan Formation in Weizhou island, Beihai city, Guangxi consists of volcanic clastic rocks. Volcanic rocks develop near Huguangyan Formation. Near the crater, a series of syn-depositional deformation structures are developped in the Huguangyan Formation, which includes seismic micro2fractures ( tensile-shear, tensile, conjugated and ladder fractures), micro-corrugated laminations, sinking rockfall structures and sand-muddy veins. These structures are believed resulting from earthquake related to volcanic activity of the Late Pleistocene.

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Syn-depositionalDeformation Structures by Earthquake Related to Volcanic Activity of the Late Pleistocene in Weizhou Island, Be ihai City, Guangxi

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