摘要
新生代以来天山北缘前陆冲断褶皱带自南向北可分为山麓冲断褶皱带、霍尔果斯-玛纳斯-吐谷鲁冲断褶皱带、独山子-安集海冲断褶皱带3排构造带。在野外观察的基础上，结合地震剖面分析，确定了各排构造带生长地层发育层序；结合裂变径迹年龄证据，并根据现有磁性地层等年代学资料，确定了天山北缘晚新生代构造变形时间序列：第一排构造带形成于距今10Ma以来；第二排构造带形成于距今7～2．58Ma以来；第三排构造带形成于距今大约0．73Ma后。
Three foreland thrust-fold belts, the Piedmont, the Huoerguosi-Manasi-Tugulu, and the Dushanzi-Anjihai, formed since the Cenozoic are recognized from south to north in the north margin of Tianshan. The sequences of growth strata developed in each belt have been established based on field observation and seismic interpretations. The fission-track dating evidences and available magnetostratigraphic data are also used in the timing of the Late Cenozoic tectonic deformation： the Piedmont formed since about 10 Ma; the Huoerguosi-Manasi- Tugulu formed from 7 to 2. 58 Ma; and the Dushanzi-Anjihai formed after about 0. 73 Ma.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2006年第4期475-481,共7页
Oil & Gas Geology
基金
国家重点基础研究发展规划项目(2001CB409804)课题资助
关键词
生长地层
冲断褶皱带
形成时间
天山北缘
晚新生代
growth strata
thrust-fold belt
deformation time
north margin of Tianshan
Late Cenozoic
