本文将参加年度优秀论文评选,如果您觉得这篇文章很好,请投下您宝贵的一票,谢谢! 支持(4)   不支持(0)

中国南北构造带北部中生代地质事件及其演化序列
投稿时间:2018-01-21  修订日期:2018-09-25  点此下载全文
引用本文:赵晓辰,刘池洋,王建强,赵岩.2018.中国南北构造带北部中生代地质事件及其演化序列[J].地质论评,64(6):1324-1338,[DOI]:.
ZHAO Xiaochen,LIU Chiyang,WANG Jianqiang,ZHAO Yan.2018.Mesozoic Geological Events and Its Evolution Sequence of the Northern North—South Tectonic Belt, China[J].Geological Review,64(6):1324-1338.
DOI:
摘要点击次数: 454
全文下载次数: 497
作者单位E-mail
赵晓辰 1)西安科技大学地质与环境学院西安710054 zxcnwu@126.com 
刘池洋 2)大陆动力学国家重点实验室西北大学地质学系西安710069 lcy@nwu.edu.cn 
王建强 2)大陆动力学国家重点实验室西北大学地质学系西安710069  
赵岩 2)大陆动力学国家重点实验室西北大学地质学系西安710069  
基金项目:本文为国家自然科学基金项目(编号:41802119,41330315)、国家地调局专项项目(编号:12120113039900, 12120114009201)和西安科技大学博士启动金(编号:6310117052)的成果。
中文摘要:南北构造带是中国大陆中部地表系统、地质构造及地球物理场的重要分界线,也是一条强震多发地带,长期以来被诸多学者所关注。但目前对该带中生代期间所经历的重要地质事件及其演化序列的研究较为薄弱,限制了对该带演化过程的认识。本文以南北构造带北部(宁南—六盘山地区)为研究对象,收集整理了大量低温热年代学数据、火山事件、构造事件及其它事件沉积的时空分布,分析和探讨了南北构造带北部中生代构造事件的演化序列。裂变径迹年龄统计结果表明,南北构造带北部中生代期间经历了晚三叠世—早侏罗世(220~180 Ma)、晚侏罗世—早白垩世早期(160~135 Ma)和晚白垩世—古新世中期(100~60 Ma)等多期的构造抬升事件。这些构造抬升事件在研究区均具有明显的地质响应,且其形成与中生代期间研究区及周邻的地球动力学环境变迁密切相关。而在构造变动的间歇期内,研究区大量接受沉积,并伴随着区域气候的变化,发生了诸多事件沉积,这一时期也往往是研究区油、气、煤、膏岩等能源矿产的富集时期。
中文关键词:南北构造带北部  中生代  地质事件  隆升期次  演化序列
 
Mesozoic Geological Events and Its Evolution Sequence of the Northern North—South Tectonic Belt, China
NameInstitution
ZHAO Xiaochen1)College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054
LIU Chiyang2)State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, 710069
WANG Jianqiang2)State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, 710069
ZHAO Yan2)State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, 710069
Abstract:Objectives: The North—South Tectonic Belt is a significant boundary between the east and west parts of Chinese continent in geological structure, geophysical field and surface system, and is also one of the major regions of strong earthquakes in the continental interior. However, the inner link of the geological events during the Mesozoic is still ambiguous. This paper is aimed to discuss the geological events and tectonic evolution of the northern North—South Tectonic Belt. Methods: Based on a large amount of low temperature thermochronology data, magmatic events, tectonic events and other depositional events, analysis the distribution sequence, depositional response and the inherent coupling relationship of these Mesozoic tectonic events. Results: Fission track ages indicate that the study area underwent four cooling events which occurred in the Late Triassic—Early Jurassic (220~180 Ma), Late Jurassic—Early Cretaceous (160~135 Ma), and late Early Cretaceous—Paleocene (110~60 Ma). Futhermore, the north segment of the North—South Tectonic Belt experienced a serious of volcanic eruptions, tuff deposition and other depositional events during the Mesozoic. Conclusion: The north segment of the North—South Tectonic Belt experienced multi phase tectonic evolution. It triggered a series of significant geological events that were closely related with each other from the aspects of temporal and spatial distribution.
keywords:Northern North—South Tectonic Belt  Mesozoic  geological event  uplifting stages  evolution sequence
查看全文  查看/发表评论  下载PDF阅读器
WeChat
s