中国古生代盆地基底大地构造特征

THE BASEMENT TECTONIC CHARACTERISTICS OF THE PALAEOIC BASIN,CHINA

太古宙(>2 500 Ma)是出现陆核或形成初始陆块的阶段.华北和塔里木是最早出现初始陆块的地区.古元古代(1 800～2 500 Ma)为陆块迅速增生阶段;古元古代末,华北、塔里木、柴达木和扬子陆块经增生相互联接.中元古代(1 000～1 800 Ma)为裂谷发育阶段,在古元古代末相互联接的地区重新发生裂解,分裂为华北、塔柴和扬子陆块.晋宁期末,华北、佳木斯、塔柴、扬子、华夏及滇藏陆块相互拼合,成为Rodinia超大陆的组成部分.新元古代初(<1 000 Ma),在古板块运动体制下,形成中国新元古代-古生代盆地.

The Archaeozoic Era （〉2 500 Ma） is the stage that the continental nucleus occurrs or the protocontinental segment forms. The proto-continental segments firstly occurred in the North of China and Tarim. The Paleoproterozoic （1 800-2 500 Ma） is the stage that the Continental segments rapidly accrete. The North china,Tarim, Qaidam and Yangtze continental segments were connected by accretion in the end of Paleoproterozoic Era. The Mesoproterozoic （1 000-1 800 Ma） is the stage that the rifts develope. The continental segments which have been connected by accretion in the end of Mesoproterozoic were re-broken up into the North China, Tarim-Qaidam and Yangtze continental segments. In the end of Jinning stage, the North China, Jiamusi, Tarim-Qaidam, Yangtze, Cathaysia and Dian-Zang continental segments integrated each other, becoming a part of Rodinia Super Continent. Beginning from the Neoproterozoic （〈1 000 Ma） to Palaeozoic Era, the Chinese Neoproterozoic Palaeozoic basins formed under the Palaeoplate tectonic system.