%0 Journal Article
%T Spatial-temporal framework of the Gangdese Orogenic Belt and its evolution<br>冈底斯造山带的时空结构及演化
%A PAN GuiTang
%A MO XuanXue
%A HOU ZengQian
%A ZHU DiCheng
%A WANG LiQuan
%A LI GuangMing
%A ZHAO ZhiDan
%A GENG QuanRu
%A LIAO ZhongLi
%A <br>潘桂棠
%A 莫宣学
%A 侯增谦
%A 朱弟成
%A 王立全
%A 李光明
%A 赵志丹
%A 耿全如
%A 廖忠礼
%J 岩石学报
%D 2006
%I 
%X The tectonic nature and subdivision of Gangdese Orogenic Belt is always one of the hottest scientific problems related to fundamental geology of Qinghai-Tibetan Plateau.The tectonic framework,subdivision and the Late Paleozoic-Mesozoic evolutional history of Gangdese Orogenic Belt have been studied based on regional geological survey(1:250000)and our data.Our study shows that the geological context of Gangdese can be well revealed by six major tectonic units and eighteen secondary units.Based on the analysis for spatial-temporal framework of different tectonic units and related magmatic records,we suggest that the Gangdese Orogenic Belt is not a simply block or continental segment,or terrane,but likely a complex orogenic belt experienced six arc-forming accretionary to a principal axis named Long'ge'er-Nyainqentanglha at Carboniferous-Permian,Early-Middle Triassic,Late Triassic, Early-Middle Jurassic,Late Jurassic-Early Cretaceous and Late Cretaceous-Eocene,as well as related arc-continent,continent- continent collision,and ultimately finalized its profile at the late Cenozoic.It is therefore evident that the evolutional history of Gangdese Orogenic Belt may have influenced from both the southward subduction of Bangong Co-Nujiang Tethyan Ocean crust and northward subduction of Yarlung Zangbo neo-Tethyan Ocean crust.It is emphasized that volcanic-magmatic arc formed at accretionary arc has the best potential for porphyry copper deposit in Gangdese,as revealed by Anglonggangri volcanic-magmatic arc,Dongqia Co accretionary arc and Sangri volcanic-magmatic arc,etc.
%K Evolutional history
%K Tectonic unit
%K Bi-directional subduction
%K Arc-forming
%K Gangdese Orogenic Belt<br>演化历史
%K 构造单元
%K 双向俯冲
%K 造弧作用
%K 冈底斯造山带
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=948BFCBF3C0B8342&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=38B194292C032A66&sid=68FF5306A8F9C315&eid=FF58680609C9D068&journal_id=1000-0569&journal_name=岩石学报&referenced_num=92&reference_num=116