全文快速搜索:          
引用本文:陈富文1 何国琦2 李华芹1. 论东天山觉罗塔格造山带的大地构造属性[J]. 中国地质, 2003, 30(4): 361-366.
CHEN Fu-wen1, HE Guo-qi2, LI Hua-qin1. Tectonic attribute of the Qoltag orogenic belt in the East Tianshan Mountains, northwestern China[J]. Geology in China, 2003, 30(4): 361-366(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1057次   下载 811 本文二维码信息
码上扫一扫!
分享到: 微信 更多
论东天山觉罗塔格造山带的大地构造属性
陈富文1 何国琦2 李华芹11,2
1.中国地质调查局宜昌地质矿产研究所,湖北 宜昌 443003;2.北京大学地质学系,北京 100871
摘要:
提要:觉罗塔格造山带位于吐哈盆地和中天山地块之间,长期以来,关于该造山带的大地构造属性争论较多,有晚古生代岛弧带、弧后盆地、裂陷槽、古生代陆缘增生带、石炭纪火山岩型被动陆缘等不同认识。基于晚古生代早期觉罗塔格地区处于板内拉张的动力学背景,而非挤压碰撞环境,结合对带内早石炭世雅满苏组火山-沉积建造较为系统的岩石学、岩石化学及岩石地球化学研究,认为觉罗塔格造山带应为一拉张型构造-岩浆岩带。
关键词:  造山带  构造属性  觉罗塔格  东天山
DOI:
分类号:
基金项目:国家重点基础研究发展规划项目(2001CB409810)资助。
Tectonic attribute of the Qoltag orogenic belt in the East Tianshan Mountains, northwestern China
CHEN Fu-wen1, HE Guo-qi2, LI Hua-qin11,2
1.Yichang Institute of Geology and Mineral Resources, China Geological Survey, Yichang 443003, Hubei, China;2.Department of Geology, Peking University, Beijing 100871, China
Abstract:
Abstract:The Joltag orogenic belt is located between the Turpan-Hami basin and Central Tianshan block, in the East Tianshan Mountains. For a long time different views exist as to the tectonic attribute of this orogenic belt, e.g. it is considered as a Late Paleozoic arc island belt, a backarc basin, an aulacogen, a Paleozoic continental-marginal accretion belt or Carboniferous volcanic-type passive continental margins. Based on systematic petrological, petrochemical and rock geochemical studies of the volcanic-sedimentary formations of the Early Carboniferous Yamasu Formation in the belt and the fact that the Qoltag area was in an intraplate extensional dynamic setting rather than a noncompresional collisional dynamic setting during the Early Paleozoic,the authors conclude that the Qoltag orogenic belt should be an extensional tectono-magmatic one.
Key words:  orogenic belt  tectonic setting  Qoltag  East Tianshan Mountain