本文对广西大厂矿田拉么矿区内出露的酸性侵入岩和矿石进行了精细的年代学研究,分别获得龙箱盖含斑黑云母花岗岩锆石原位SHRIMP UPb和全岩RbSr等时线年龄为94±4Ma(95%可信度)和98.6±1.9Ma(95%可信度),矽卡岩成矿期锌铜矿石中石英矿物RbSr等时线年龄为98.6±6Ma(95%可信度)。上述测定结果表明,拉么锌铜多金属矿床的成矿年龄与相关岩体的成岩年龄接近,均形成于早白垩世晚期。
LI Huaqin, Wang Denghong, MEI Yuping, LIANG Ting, CHEN Zhenyu, GUO Chunli, YING Lijuan.2008. Lithogenesis and Mineralization Chronology Study on the Lamo ZincCopper Polymetallic Ore Deposit in Dachang Orefield, Guangxi[J]. Acta Geologica Sinica,82(7):912-2008-01-30
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