吉黑造山带古生代构造古地理演化

The Evolution of Paleozoic Tectonic Paleogeography in Jilin and Heilongjiang Orogenic Belt

吉黑造山带夹持于华北板块和西伯利亚板块之间。对该区域古生代构造古地理演化规律的研究，是恢复板块间碰撞拼合及古亚洲洋发展演化历史的关键。在早古生代期间，华北板块与西伯利亚板块间通过古亚洲洋板块相接。在古亚洲洋板块上散布着一些中间地块。志留纪末期，中间地块间相互拼合碰撞形成中间地块群，同时，古亚洲洋板块持续向华北板块俯冲消亡，使中间地块与华北板块基本拼合，古亚洲洋在该区域内闭合。晚古生代该区域为大陆内裂陷槽环境，至二叠纪末，发生陆 陆碰撞对接。

Jilin and Heilongjiang orogenic belt locate between the Huabei and Siberia plate. The researches of the evolution of Paleozoic tectonic paleogeography in the orogenic belt is the key in reconstructing the evolution history of plate collsion and Paleo-Asia occean. During early Paleozoic, the Huabei plate connected with Siberia plate through Paleo-Asia occean plate which contains some middle massifs.At the end of Silurian, the middle massif collided each other and formed a group of middle massif,meanwhile the Paleo-Asia plate thrust under the Huabei plate, which make the Huabei plate and the middle massif collided and the Paleo-Asia occean disappeared.During late Paleozoic,the researching area was of aulacogen.At the end of Permian, continental collission made the marine environment disappeared.