%0 Journal Article
%T Exhumation of the Fuyun basic granulite in Altaid Orogenic Belt: Constraints from fission-track thermochronology<br>阿尔泰造山带富蕴基性麻粒岩折返过程: 来自裂变径迹热年代学的限定
%A Lin XB
%A Chen HL
%A Yang SF
%A Li ZL
%A Yu X
%A Cheng XG
%A <br>林秀斌
%A 陈汉林
%A 杨树锋
%A 厉子龙
%A 余星
%A 程晓敢
%J 岩石学报
%D 2010
%I 
%X On the basis of previous studies of SHRIMP U-Pb chronology, geochemistry, metamorphic temperature/pressure conditions and tectonic setting, fission-track thermochronology has been conducted in this study to determine the exhumation of the basic granulite.Zircon fission-track shows Triassic and apatite fission-track shows Late Cretaceous to Early Cenozoic ages.Thermal history modeling of the fission-track data, combined with previous studies, indicate that the basic granulite was exhumed to the upper crust under about 7.8km in Triassic.From Late Cretaceous to Early Cenozoic (around 100~50 Ma), the basic granulite, meta-diabase and the wall rock gneiss were cooled to the blocking temperature of apatite fission-track, which was about 3.5km below the surface.From approximately 50 to 15 Ma, they stayed at the partly-annealed zone of apatite fission-track, about 1.7km below the surface.Since about 15 Ma to present, they were uplifted and denudated to the surface.
%K Altaid Orogenic Belt
%K Fuyun
%K Basic granulite
%K Fission-track
%K Exhumation<br>阿尔泰造山带
%K 富蕴
%K 基性麻粒岩
%K 裂变径迹
%K 折返
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=A0EAE2488F0711664654C6210B799C8F&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=09AA1448D1EAF9C1&eid=65C08888CCE4801E&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=60