| 亚东—格尔木地学断面古地磁新数据与青藏高原地体演化模式的初步研究 |
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| NEW PALEOMAGNETIC RESULTS FROM YADONG—GOLMUD GEOSCIENCE TRANSECT AND A PRELIMINARY STUDY ON THE MODEL OF TERRANES EVOLUTION IＮ QINGHAI-XIZANG PLATEAU |
| Based on 29 sets of new paleomagnetic data from Paleozoic and Mesozoic main terranes in Xizang plateau and data of other writers. Some geological problems related to Xizang plateau, such as paleogeographic distributions, boundary between the terranes，collision time of terranes, active tectonic and swell mechanism，etc.，have been analyzed and discussed, and the terranes evolution pattern has also tentatively been established. The pattern is that Himalaya, Gandise, Qiangtag and Kunlun terranes had been located in sourthern latitude during Paleozoic era. Overall, Xizang plateau has shown a tendency to move from south to north since Paleozoic era and Qiangtag and Bayanhar terrane had been accreted to southern and northern Kunlun terrane from late Triassic epoch to early Jurassic epoch, Gandise terrane to Qiangtang terrane from late Jurassic epoch to early Cretaceous epoch, and Himalaya to Gangdise terrane from late Cretaceous epoch to early Paleogene period. Thus these terranes made a unified continent. It responds to the uninterrupted process of accretion of Eurasia. The important mechanism that Xizang Plateau swelled is an intensely intercontinent reduction produced by many terranes on northern Xizang after Cretaceous period. |
| DONG Xue-bin,WANG Zhong-min,TAN Cheng-ze,YANG Hui-xin,CHENG Li-ren,ZHOU Yao-xiu.1990.NEW PALEOMAGNETIC RESULTS FROM YADONG—GOLMUD GEOSCIENCE TRANSECT AND A PRELIMINARY STUDY ON THE MODEL OF TERRANES EVOLUTION IＮ QINGHAI-XIZANG PLATEAU[J].Acta Geoscientica Sinica,11(2):139-148. |
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