摘要
安徽宿州栏杆辉绿岩型金刚石矿床是近期境内新发现原生矿,本文对含矿载体辉绿岩采样进行了斜锆石SIMS Pb-Pb同位素分析,获得^(207)Pb/^(206)Pb年龄为898～920 Ma,^(207)Pb/^(206)Pb加权平均年龄为913±4 Ma,表明栏杆含矿辉绿岩形成于新元古代青白口纪(Qb)早中期,即凤阳运动晚期,是华北地台基底固结形成、基性超基性岩浆侵位同一事件的产物。
The Langan diabase diamond deposit in Suzhou,Anhui is of primary ore newly discovered in the area in recent years.This paper conducted baddeleyite SIMS Pb-Pb isotope analysis on the samples collected from ore-bearing carrier diabase,obtained207Pb/206Pb age being898~920Ma,207Pb/206Pb weighted average age being913+4Ma,suggesting that the Langan ore-containing diabase formed in the early-mid Qingbaikou(Qb)period of Neo-Proterozoic,namely the late Fengyang Movement period,as a product of the same event of the North China platform basement consolidation,and the emplacement of basic and ultrabasic magma.
作者
马玉广
朱仁智
MA Yu-guang;ZHU Ren-zhi(No.2 Institute of Hydrogeological and Engineering Geological Exploration, Bureau of Geology and Mineral Exploration of AnhuiProvince, Wuhu, Anhui 241000, China;Nanjing University, Nanjing, Jiangsu 210000, China)
出处
《安徽地质》
2018年第3期201-203,共3页
Geology of Anhui
基金
安徽省国土资源厅2015年科技项目【安徽宿州地区原生金刚石载体及成矿条件研究(项目编号2015-K-9)】资助
