作　　者： ; ; ; ; ;

机构地区： 中国科学院地质与地球物理研究所

出　　处： 《大庆石油地质与开发》 2014年第1期1-15,共15页

摘　　要： 东北亚地区的北东向构造在晚中生代—新生代经历了形成、发展和壮大3个阶段。晚侏罗世它作为新生构造出现但表现形式和地球动力学背景因地而异:蒙古东部受制于蒙古—鄂霍次克造山带(北东向的宗莫德段)的坍塌而出现一组北东向的伸展盆地;大兴安岭(含塔木察格)地区发生陆内的热造山作用,是对东亚大陆边缘区北东向郯庐断裂带和长乐—南澳断裂带形成并沿之发生移置地体斜向汇聚—剪切造山作用的响应。早白垩世在蒙古东部—中国北部出现一组北东向张扭盆地且有共同的成盆动力学背景。晚白垩世早—中期大兴安岭和海拉尔—塔木察格地区隆起,出现"两坳夹一隆"的格局。随新近纪陆内地区进一步伸展,蒙古东部和中国北部的白垩纪盆地均被更新世的坳陷上叠且面积扩大;蒙古中北部地区有北东向正断层形成并控制了地堑发育和玄武岩喷发,表征了北东向构造向西扩大。 NE structures in Northeast Asia experienced three-stage evolution during Late Mesozoic-Cenozoic, namely, the generation, development and expansion stages. As a Neogenic structure, during Late Jurassic, it formed with varied expressions and geodynamic backgrounds： a group of NE extended basins occurred in Eastern Mongolia, which is controlled by the collapse of the Mongolia-Okhotsk orogenic belt （NE Zuunmod interval） ; whereas an intracontinental thermal orogeny took place in Daxing＇anling （ including Tamtsag） area was the response to the oblique converging-shearing orogeny of the allochthonous terrains along the generated NE Tanlu and Changle- Nan＇ao fracture belts in the margins of East dynamic setting appeared in East Mongolia Asia. A group of NE tenso-shear basins with the same basin-generating and Northern China during Early Cretaceous. In the early-middle Late Cretaceous, Daxing＇anling and Hailar-Tamtsag areas were uplifted and sandwiched between two depressions. With the further extension and spread in Neogene, the Cretaceous basins in East Mongolia and Northern China were su- perimposed by Pleistocene depressions and extended in area; furthermore NE normal faults formed in Central- Northern Mongolia and controlled the graben development and basalt eruption, thus characterized that NE structures expanded westwards.

关 键 词： 东北亚地区 晚中生代一新生代 北东向新生构造 盆地发育 斜向汇聚一剪切造山 盆 山 耦合 石油 煤炭资源

领　　域： [石油与天然气工程]