鲁西地区新太古代早期的岩浆活动——泰山岩套英云闪长质片麻岩锆石SHRIMP U-Pb年龄的证据  

Magmatism in Early Period of Neoarchean in Western Shandong Province——Zircon SHRIMP U-Pb Age Evidence of Tonalite Gneiss in Taishan Rock Suite

作　　者：王世进[1] 万渝生[2] 宋志勇[1] 杨恩秀[1] 王伟[2] 董春艳[2] 

机构地区：[1]山东省地质调查院,山东济南250013 [2]中国地质科学院地质研究所北京离子探针中心,北京100037

出　　处：《山东国土资源》2013年第4期1-7,共7页Shandong Land and Resources

基　　金：山东省地质系列图件编制与综合研究项目(1212010811029);中国地质调查局重点项目(212010811033;1212010711815);国家自然科学基金资助项目(40672127)资助

摘　　要：泰山岩套主要岩性为英云闪长质片麻岩和条带状英云闪长质片麻岩,出露于鲁西地区泰山—化马湾—蒙山一带。根据新测的锆石SHRIMP U-Pb年龄结果,其岩浆结晶年龄2 729～2 700Ma,变质年龄2 600Ma,其形成时代确定为新太古代早期。该岩套组成古老陆核,是地幔岩浆侵入混入地壳物质形成的。Main lithology of Taishan rock suite is tonalitic gneiss and banded tonalite gneiss. It outcropped in Taishan--Huamawan--Mengshan area in western Shandong province. According to new measuring results of zircon SHRIMP U- Pb age, its magma crystallization age is 2729-2700Ma, metamorphic age is 2600Ma, and the formation age is identified as early period of Neo--archean. Ancient continental nucleus were formed by the rock suite which was formed by mantle magma intrusion mixed with crustal materials.

关 键 词：泰山岩套 (条带状)英云闪长质片麻岩 SHRIMP U—Pb定年 鲁西地区 

分 类 号：P597.3[天文地球—地球化学]