大别山北缘石炭系碎屑岩地球化学及碎屑锆石年代学分析及其对物源区大地构造属性判别的.pdf

1000-0569 / 2012 /028( 08) -2619-28 Acta Petrologica Sinica 岩石学报 大别 山北缘石炭系碎屑岩地球化学及碎屑锆石 年代学 * 分析及其对 物源区大地构造属性判别 的制约 杨栋栋 李双应＊＊ 赵大千 王松 杜 叶龙 赵万维 YANG DongDong ，LI ShuangYing ＊＊ ，ZHAO DaQian ，WANG Song ，DU YeLong and ZHAO WanWei ， 230009 合肥工业大学资源与环境工程学 院 合肥 College of Resources and Environment ，Hef ei University of Technology ，Hef ei 230009 ，China 20 11-11-12 收稿 ，20 12-02-28 改回 . Yang DD ，Li SY ，Zhao DQ ，Wang S ，Du YL and Zhao WW． 2012． Geochemistry and detrial zircon geochronology of Carboniferous detrital rocks in the northern margin of Dabie Mountains ，central China and constraints to distinguishing the provenance tectonic attribute． Acta Petrologica Sinica ，28( 8) : 2619 － 2628 Abstract The Carboniferous is a suite of un-metamorphosed or slightly metamorphosed sedimentary strata in the northern margin of the Dabie Mountains ，and it recorded the information of the provenance and the Paleozoic tectonic evolution． The authors analyze the compositions of major ，trace and rare elements ，the detrital compositions of sandstone and the dating of detrital zircons in the study area ，and investigate the tectonic attribute and evolution of the provenance． Medium-fine grain quartz sandstone and feldspar-quartz sandstone are the major in the study area． The QFL averages of sandstones are Q 76. 2% ，F 15. 9% ，L 7. 9% and Q / ( F + L) 4. 26; the major element oxide averages of Carboniferous sandstones are SiO 63. 69% ，Al O 11. 25% ，MgO 3. 66% ，CaO 5. 15% ，Fe OT 2 2 3 2 3 6. 15% ，K O 1. 68% and Na O 0. 68% ; the part characteristic trace elements like Th ，U ，Hf ，Sc