塔里木与扬子新元古代热-构造事件特征、序列和时代——扬子与塔里木连接(YZ-TAR)假设

地层学和事件地质学的资料,特别是新获得的大量U-Pb同位素年龄资料表明,塔里木和扬子陆块的新元古代地质历史具有极大的相似性,突出表现在热-构造事件的特征、序列和年代格架、克拉通化终结时间、前南华系变质基底和南华系-震旦系沉积盖层所表现的双层结构特点、南华系-震旦系地层层序、地层对比标志层——冰成岩层位等诸多方面。根据这些相似性,笔者等提出中—新元古代扬子与塔里木陆块相连或相邻的可能性。

CHARACTERISTICS,SEQUENCE AND AGES OF NEOPROTEROZOIC THERMO-TECTONIC EVENTS BETWEEN TARIM AND YANGZI BLOCKS--A HYPOTHESIS OF YANGZI-TARIM CONNECTION

There is a remarkable similarity between the Neoproterozic history of Tarim block and that of Yangtze block, which is indicated by a number of stratigraphic and event geological data, especially the new U-Pb ages. The similarity is illustrated by the feature, the sequence and the ages of thermo-tectonic events, the end of craton, bi-layer structure composed of pre-Nanhua metamorphic basement and sedimentary cover,stratigraphic sequence from the Nanhua to Sinian System, and the stratigraphic marker-glaciogenic beds within the Nanhua System. According to the similarity, we have proposed a hypothesis that the Yangtze and Tarim blocks may have been connected or may have been neighborhood.