Title: PALEOMAGNETIC STUDY ON THE TECTONIC MOTION OF PAN-XI BLOCK AND ADJACENT AREA DURING YINZHI-YANSHAN PERIOD
Abstract: In order to study the evolution of the continent in Pan-Xi (Panzhihua-Xichang) area, some Mesozoic rock samples have been collected. We have carried out magnetic cleaning for 619 specimens from 59 sites by A. F and thermal demagnetization. The fold test showed that remanent magnetization of samples collected for this work are stable. Those with precision parameter K less than 10, or with remagnetization have rejected.The paleomagnetic results indicate that Pan-Xi fault-uplift, Liangshan fault-depression (Fig. 1) belong to the west edge of Yangtze block. They located 13° or so (north latitude) in early-Triassic period. Up to now they have moved northerly about one thousand km and the motion has systematically slowed down since late-Triassic Era. Yanyuan fault-depression has moved southerly about hundreds km since early-Triassic Era, the paleolatitude and paleo-orien-tation were systematically different from those in eastern adjacent block.
Publication Year: 1988
Publication Date: 1988-01-01
Language: en
Type: article
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Cited By Count: 37
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