地质通报2017，Vol.36Issue(7)：1175-1187,13.
临沧地体亲缘性及南段组物源——来自泥盆纪—石炭纪南段组碎屑锆石U-Pb年龄的证据
The relationship between Lincang block and prove?nance of Nanduan Formation: Evidence of detrital zircon U-Pb dating from metasandstone of Devonian-Carboniferous Nanduan Formation
摘要
Abstract
Absract:U-Pb ages of detrital zircons of Devonian-Carboniferous Nanduan Formation from Lincang block define three distinctive age peaks in older Grenvillian (1100~1300Ma), younger Grenvillian (900~980Ma) and Pan-African (530~680Ma), and two subordi?nate group in 1550~1730Ma and 2350~2630Ma, suggesting that the provenance of sediments had multi-source and complex charac?teristics. The age spectrum is obviously different from detrital zircon age spectrum of the Devonian-Carboniferous sediments of Si?mao block, which indicates that the sediments of Nanduan Formation came from East Ganwana supercontinent, and the result is indi?cated by paleobiology which shows a genetic relationship between East Ganwana and paleo-Tethys in southwest Yunnan.关键词
碎屑锆石/LA-ICP-MSU-Pb年龄/物源分析/碎屑岩/南段组/临沧地体/滇西南Key words
detrital zircon/LA-ICP-MS U-Pb age/provenance analysis/metasandstone/Nanduan Formation/Lincang block/southwest Yunnan分类
天文与地球科学引用本文复制引用
曾文涛,刘桂春,冯庆来,赵天宇,俞赛赢,邓仁宏,莫熊..临沧地体亲缘性及南段组物源——来自泥盆纪—石炭纪南段组碎屑锆石U-Pb年龄的证据[J].地质通报,2017,36(7):1175-1187,13.基金项目
中国地质调查局项目《云南区域地质调查片区总结与服务产品开发》(编号:DD20160345-02)、国家自然科学基金项目《滇西南原题特斯及其与古特提斯演化关系研究》(批准号:41672222)和云南省科技基金项目《西南"三江"叠合成矿作用与成矿预测》(编号:2013HA001) （编号:DD20160345-02）
