| The characteristics of geophysical field and tectonic evolutionin the Bransfield Strait |
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| 引用本文： | 姚伯初,王光宇,陈邦彦,陈圣源.The characteristics of geophysical field and tectonic evolutionin the Bransfield Strait[J].极地研究,1995,6(1):12-23. |
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| 作者姓名： | 姚伯初 王光宇 陈邦彦 陈圣源 |
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| 摘 要： | ＴｈｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｇｅｏｐｈｙｓｉｃａｌｆｉｅｌｄａｎｄｔｅｃｔｏｎｉｃｅｖｏｌｕｔｉｏｎｉｎｔｈｅＢｒａｎｓｆｉｅｌｄＳｔｒａｉｔＹａｏＢｏｃｈｕ（姚伯初）;ＷａｎｇＧｕａｎｇｙｕ（王光宇）;ＣｈｅｎＢａｎｇｙａｎ（陈邦彦）ａ...
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The characteristics of geophysical field and tectonic evolution in the Bransfield Strait |
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| Abstract: | Having analysised the data collected by our survey ship"Ocean IV "in the Bransfield Strait in 1991,we recognized that the geomorphology,gravity and magnetic anomalies trending NE direction along bandings. The sediments in the Bransfield Strait can be subdivided into two sequences:the first rifting equence and the second rifting sequence.The basement was faulted into a half-graben in northwestern side of the Bransfield trough. Considering the crustal structure crossing the South Shetland Islands,the Bransfield Strait and the Antarctic Peninsula, we propse a two-phase rifting tectonic evolution model and a layered-shear model for the lithospheric deformation under the effects of extensional stress field. |
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