摘要
精确同位素地质测年结果表明,泰山岩群下部地层雁翎关岩组(含原柳杭组下亚组)岩浆结晶锆石SHRIMPU-Pb年龄(2 747±7)Ma,孟家屯岩组碎屑锆石内核SHRIMP U-Pb年龄(2 717±33)Ma、(2 742±23)Ma,均属新太古代早期,形成年龄为2 750～2 700Ma;泰山岩群上部地层山草峪岩组最年轻的碎屑锆石(2 544±6)Ma,被峄山岩套石英闪长岩和傲徕山岩套二长花岗岩侵入,它限制了地层形成时代不晚于2 530Ma,柳杭岩组(原柳杭组上亚组)最年轻的碎屑锆石(2 524±7)Ma,均属新太古代晚期,被峄山岩套石英闪长岩和傲徕山岩套二长花岗岩侵入,形成年龄为2 550～2 530Ma。
As showed by precise isotope geological dating results, magmatic euhedral zircon SHRIMP U- Pb age of Yanlingguan formation （including lower sub-formation of the former Liuhang formation） in the lower part of Taishan group is （2747±7） Ma, detrital zircon kernel SHRIMP U-Pb age of Mengjiatun formation is （2717±33） Ma and （2742±23）Ma. They all belong to early Neoarchean period, and the for-mation age is 2750-2700Ma. The youngest detrital zircon of upper Shancaoyu formation in Taishan group is （2544±6） Ma. It is intruded by quartz diorite in Yishan rock suite and monzogranite in Aolaishan suite. It limits the strata forming age not later than 2530 Ma. The youngest detrital zircon of Liuhang group （the original upper sub-formation of Liuhang group） is （2524±7）Ma, and belongs to late period of late Ar-chean period. It is intruded by quartz diorite of Yishan rock suite and monzonite granite of Aolaishan rock suite. Its formation age is 2550-2530Ma.
出处
《山东国土资源》
2012年第12期15-23,共9页
Shandong Land and Resources
基金
国家自然科学基金(41172172)资助
关键词
泰山岩群
地层划分
形成时代
同位素地质测年
山东省
Taishan group
stratigraphic division
formation age
isotope geological dating
ShandongProvince
