河西走廊及邻区中新生代成盆背景与盆地原型

BACKGROUND AND PROTOTYPE OF THE MESO-CENOZOIC BASINS IN HEXI CORRIDOR REGION

罗开平 范小林

LUO Kai-ping FAN Xiao-ling

成都理工大学, 四川, 成都, 610059 2. 中国石化, 石油勘探开发研究院, 西部分院, 新疆, 乌鲁木齐, 830011

Chengdu University of Technology, Chengdu, Sichuan 610059, China 2. Western Institute of Petroleum Exploration & Production, SINOPEC, Urumq, Xinjiang 830011, China

河西走廊地区在祁连加里东期褶皱基底上,于印支期以来长期的南北向挤压环境中形成了众多的、不同类型(原型)的中新生代沉积盆地。这些盆地的形成、展布、结构受控于新特提斯洋中块体增生、洋壳俯冲以及阶段性地体拼合后续的板内形变,与祁连山褶皱系和相邻地块内(间)非均一陆内块体活动密切相关。中新生代不同时期、不同成盆阶段在不同的板内形变机制主导下形成了不同类型和不同风格的盆地(原型),复活山系前陆盆地、陆内断陷盆地、走滑盆地是该地区主要的盆地类型。

Many different types (prototype) of Meso-Cenozoic basins have been formed in Hexi Corridor region on Qilian Caledonian folded basement in a long-term N-S compression environment since Indosinian Movement. The fomation, distribution and structure of basins were controlled by mass accretion, oceanic crust subduction and inplate deformation induced by phrase terrane collision in Neo-Tethys Ocean, and also closely related with Qilian fold system and the inhomogeneous intracontinent block activities in/between adjacent land masses. The different inplate deformation mechanism in the different periods of Cenozoic and different stages of basin formation dominated the development of different types and styles of basins (prototype).

中国石油化工股份有限公司科技研究项目(P02058).

https://doi.org/10.11781/sysydz200405432