摘要
新疆东昆仑鸭子泉地区的早石炭世地层主要由深海浊流沉积组成，发育鲍玛序列的ＢＣ和ＤＣＢ组合，多形成于浊积扇的中扇环境。古水流的方向表明，当时的大陆坡倾向ＳＥ。浊积岩的地球化学成分反映其形成的构造环境为活动大陆边缘，沉积物主要来源于当时其ＳＥ方向的火山岛弧。
The sedimentological reserach on the Early Carboniferous in East Kunlun Orogenic Blet demonstrate that the rocks are mainly composed of deep water turbidites in the deep sea,in which 2 successions are recognized on the basis of lithology,textures and stuctures of the rocks.They are BC and DCB assemblages of Bouma sequence,and are mainly formed in mid fan environments.The turbidite fan in the study area is mainly formed in a active tectonic setting,such as the epicontinental sea in back arc area.The spatial distribution of the turbidites and paleocurrent data suggeted that the continental slope was once dipped toward to the southeast at that time.The tectonic seting of the sedimentary basin was interpreted as active continental margin based on the geochemical composition analysis of the turbidites,and the sediments mainly came from the volcanic island arc in the southeast area of the basin
出处
《新疆地质》
CAS
CSCD
1999年第2期15-20,共6页
Xinjiang Geology
基金
国家"305"项目
关键词
新疆
东昆仑
鸭子泉
早石炭世
浊积岩
Xinjiang
East Kunlun
Yaziqua
Early Carboniferous
turbidite
