鲁西地区中生代侵入岩期次划分

Division of Mesozoic Intrusive Stages in Luxi Area

摘要:

鲁西地区中生代有2个岩浆活动时期,中侏罗世岩浆活动规模较小, 形成铜石杂岩体，锆石SHRIMP U〖CD*2〗Pb年龄167.9~183 Ma，加权平均值为(175.7±3.8)Ma；早白垩世岩浆活动范围较广,生成多种岩石系列,形成济南—埠村—邹平—淄博金岭一带杂岩体和沂南县铜井、莱芜、蒙阴虎头崖、临朐铁寨等杂岩体，锆石SHRIMP和LA-ICP-MS U-Pb测年结果为128~134 Ma。

Abstract:

There are two Mesozoic magmatic activity periods in Luxi area. Jurassic magmatic activity which formed the copper Igneous rock has a smalle scale. Its zircon age of SHRIMP U 〖CD*2〗 Pb is 167.9~183Ma, and the average weighted value is (175.7 ± 3.8) Ma. Ma