北淮阳带北缘石炭系碎屑岩地球化学特征及物源区构造环境  

Geochemical Characteristics and Tectonic Environment of Carboniferous Clastic Rocks in North Huaiyang Structural Belt

作　　者：沈仕豪 刘家云[1] 张晋喆 管后春[1] 汪雅菲 Shen Shihao;Liu Jiayun;Zhang Jinzhe;Guan Houchun;Wang Yafei(Anhui Geological Survey,Hefei,Anhui 230001)

机构地区：[1]安徽省地质调查院,安徽合肥230001

出　　处：《资源环境与工程》2022年第1期1-7,共7页Resources Environment & Engineering

基　　金：安徽1∶5万姚李镇幅、苏家埠幅、张家店幅、舒城县幅、金牛镇幅区域地质矿产调查(12120113067800)。

摘　　要：北淮阳构造带出露的石炭系为古生代唯一一套未变质或轻微变质的地层,其沉积记录可较好地反映物源区物质组成及构造环境。基于1∶5万区域地质调查工作,对采自北淮阳构造带北缘三仙山地区的石炭系碎屑岩进行主量、微量及稀土元素分析,探讨石炭系物源区及构造环境。研究表明三仙山地区的石炭系有不同的物源区,杨山组和道人冲组物源区可能主要为扬子陆块或再旋回造山带,胡油坊组物源区可能为扬子陆块与华北陆块。The Carboniferous in the North Huaiyang area is the only set of unmetamorphosed or slightly metamorphosed Paleozoic strata,whose sedimentary records can better reflect the material composition and tectonic environment of provenance.Based on the 1∶50000 regional geological survey,the major elements,trace elements and rare earth elements of Carboniferous clastic rocks collected from Sanxianshan area are analyzed to discuss the provenance and tectonic settings of Carboniferous.Study shows that Carboniferous in Sanxianshan area has different provenances areas.The provenance areas of the Yangshan Formation and Daorenchong Formation may be mainly the Yangtze block or recycle orogenic belt,and provenances of Huyoufang formation may be the Yangtze block and North China block.

关 键 词：物源区 地球化学特征 碎屑岩 石炭系 三仙山地区 北淮阳构造带 

分 类 号：P588.21[天文地球—岩石学] P595[天文地球—地质学]