地质科学2024，Vol.59Issue(2)：313-329,17.DOI:10.12017/dzkx.2024.022
新疆北部和什托洛盖盆地中、新生代构造抬升事件的确定及其地质意义:来自低温热年代学的证据
Definition of a Meso-Cenozoic tectonic uplift event and its geological significance in the Hoxtolgay Basin,northern Xinjiang:Evidence from low-temperature thermochronology
摘要
Abstract
The structural attributes of the West Junggar Orogenic Belt in northern Xinjiang have been a subject of long-standing controversy.Determining the tectonic events and uplift processes in the Mesozoic-Cenozoic in this region is crucial for studying the intracontinental deformation.This article presents a systematic analysis of the tectonic uplift events in the intermontane basins within the orogenic belt,particularly focusing on the Hoxtolgay Basin.Based on field geological surveys and fault analysis,five regional unconformities(C/J,J/AnJ,J/E,K/E and E/N)have been identified as direct evidence of tectonic activity.In the Mesozoic-Cenozoic,the basin was subjected to N-S compression stress due to two controlling faults to the north and south.The apatite fission track ages of sandstone samples indicate three distinct cooling and uplift events in the Late Jurassic to Early Cretaceous(149～125 Ma),Mid-Cretaceous(121～109 Ma),and early Late Cretaceous(80.0～77.7 Ma),reflecting a strong geological response to these three periods of cooling uplift events.Thermal history simulations suggest rapid uplift events during the Late Jurassic to Early Cretaceous(160～110 Ma),Late Cretaceous(85～65 Ma),and Oligocene to Miocene(30～5 Ma).The main stress causing the basin's tectonic uplift is the uplift of peripheral mountain ranges and the compression from fault activity.The comprehensive study indicates that the Mesozoic-Cenozoic period experienced three distinct tectonic uplift events,which are well-coupled with the far-field effects of the Indosinian,Yanshan and Xishan movements during the Mesozoic-Cenozoic.关键词
裂变径迹/热史模拟/构造事件/和什托洛盖盆地/中、新生代Key words
Fission-track/Thermal history/Tectonic evolution/Hoxtolgay Basin/Meso-Cenozoic分类
天文与地球科学引用本文复制引用
杨智,马静辉,张琬金,李鸿蕊..新疆北部和什托洛盖盆地中、新生代构造抬升事件的确定及其地质意义:来自低温热年代学的证据[J].地质科学,2024,59(2):313-329,17.基金项目
新疆维吾尔自治区自然科学基金项目(编号:2021D01C041)资助 （编号:2021D01C041）
