摘要
根据裂变径迹定年法研究 ,南天山库车坳陷地区在晚白垩世发生构造隆升事件 ,表现为全区范围内缺失晚白垩世地层。隆升事件在区域内具有不等时性 ,介于 10 9.6～ 6 8Ma之间 ,平均隆升速率约为 4 7.6m/Ma ,构造剥蚀量为 3.2 8～ 3.93km。隆升事件形成库车坳陷构造格局的雏形 ,从全球动力学观点来看 ,可归因于Kolistan
By the research of dating age with fission track, it made clear that there was a tectonic uplift in Late-Cretaceous in the Kuche basin, the uplift manifested the lack of Late-Cretaceous stratum in the whole district. The further research turned out that the uplift was a discrepant uplift process. The uplift age changed between 109.6 Ma and 68 Ma. The average uplift velocity was about 47.6 m/Ma. The denudation volume was about 3.28-3.93 km. The uplift made the tectonic rudiment in the Kuche basin. From the point of view of the dynamics of Earth, the uplift maybe resulted from the collision of the Kolistan-Dran island and Lasa terrain in Late-Cretaceous.
出处
《资源调查与环境》
2002年第3期179-184,共6页
Resources Survey & Environment
基金
国家自然科学基金资助项目 (49832 0 4 0 )
