ADVANCES IN POLAR SCIENCE ›› 1995, Vol. 6 ›› Issue (1-English): 12-23.
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Yao Bochu, Wang Guangyu, Chen Bangyan and Chen Shengyuan
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The project is supported by the State Antarctic Committee of China.
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.
Key words: geophysical field, crustal structure, tectonic evolution, layered-shear model
Yao Bochu, Wang Guangyu, Chen Bangyan, Chen Shengyuan. The characteristics of geophysical field and tectonic evolution in the Bransfield Strait[J]. ADVANCES IN POLAR SCIENCE, 1995, 6(1-English): 12-23.
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https://journal.chinare.org.cn/EN/Y1995/V6/I1-English/12
