论塔里木——扬子板块及其古地理格局

本文重新审视塔里木与华北、扬子板块的亲疏关系,提出秦祁昆褶皱带应解体,柴达木、阿拉善与塔里木板块原为一体.新的古地理格局是塔里木—扬子板块为晋宁(塔里木)运动之后,形成的一个巨型克拉通,南方型震旦系及其冰成岩是其原始范围的标志.

TARIM-YANGTZE AND ITS PALAEOGEOGRAPHIC PATTERN

This paper systematically analyzes the stratigraphic features of the three major plates in China, with emphasis in the sedimentary and palaeobiogeographic features of Sinian , Cambrian and Ordovician. According to the research of the authors, the traditional idea that Tarim-Sino-Korean plate is bounded to the Yangtze plate by Qinling-Qilian-Kulun folding zones is not acceptable.On the basis of our research in palaeogeography, the following conclusions are carried out.1. Qaidam and Alxa (Alashan )massifes and Tarim plate once belong to a single plate, which the Yangtze plate belongs to a gigascopic craton of same latitude. The South China-type Sinian with its typical tillites or glacial rocks indicates the orginal ranges of Tarim-Yangtze plate.2. The sedimentary, biological and tectonic palaeogeography of Tarim-Yangtze plate belong to a huge unified palaeogeographic province.3. During the Sinian to Silurian, the sedimentary and biota features of Australia, Kazakhstan of U S S R and Tarim-Yangtze plates have much similarity. So we can infer that Australia-Southeast Asia-Yangtze and Tarim-Kazakhstan plates orginally belong to huge craton group which stayed in the same latitude.