| 摘要点击次数: 1149 全文下载次数: 0 查看全文 查看/发表评论 下载PDF阅读器 |
| 基金项目：江苏省地质勘查基金项目“江苏省沛县朱寨镇田祖庙铁矿普查”（苏国土资函（2010）8号，苏财建（2011）425号） |
|
| 摘要： |
| 对江苏沛县田祖庙地区泰山（岩）群变质岩的岩石学特征和地球化学特征进行分析和统计，发现岩性以黑云角闪斜长片麻岩为主，其次为黑云斜长片麻岩、角闪斜长片麻岩，再其次为黑云（角闪）二长片麻岩，局部见混合岩化片麻岩。研究区泰山（岩）群主要元素地球化学成分特征整体表现为富Fe、Mg、Ca，w(Na)＞w(K)，含一定量Al、Si。根据岩石全分析和微量元素，经原岩恢复，初步认为研究区太古代泰山（岩）群变质岩的原岩为中性—基性火山岩，推测为安山岩、玄武安山岩 |
| 关键词：泰山（岩）群：变质岩 原岩恢复 田祖庙地区 江苏沛县 |
|
| Abstract: |
| This work did statistical analysis of the petrological and geochemical features of the Taishan group metamorphic rocks in the Peixian County of Jiangsu Province. The result shows that the metamorphic rocks are dominated by biotite hornblende plagioclase gneiss, followed by biotite plagioclase gneiss and hornblende plagioclase gneiss, and then followed by biotite (hornblende) monzonitic gneiss, with locally migmatized gneiss. The Taishan group is rich in Fe, Mg and Ca, w(Na)＞w(K), and contains certain amounts of Al and Si. Protolith restoration based on whole rock analysis and trace elements suggests that the original rocks of the Taishan group metamorphic rocks are intermediate basic volcanic rocks, which are inferred to be andesite and basaltic andesite. |
| Keywords:Taishan group metamorphic rock protolith restoration Tianzumiao area Peixian County in Jiangsu |
| 徐磊，姜锡，董茜.江苏沛县田祖庙地区泰山（岩）群变质岩地球化学特征及原岩恢复[J].地质学刊,2016,40(1):47-56 |
|
|