2013-2015新疆东天山延东铜矿床流体包裹体、辉钼矿Re-Os及绢云母Ar-Ar年龄数据资料
收藏国家地球系统科学数据中心2020-05-20 更新2024-03-04 收录
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通过对延东铜矿脉次间穿插关系及矿物组合的研究发现，在延东铜矿区存在两期成矿事件，第一期为斑岩成矿作用，第二期为叠加改造作用。两期流体均由高温向低温进行演化。绢云母Ar-Ar年龄显示，第一期成矿作用形成于333 Ma左右，可能由含矿岩体斜长花岗斑岩侵入而引起；辉钼矿Re-Os定年显示，第二期成矿作用形成于323 Ma左右，可能是由石英钠长斑岩侵入而引起。
Through investigations on the cross-cutting relationships and mineral assemblages of the Yandong copper ore veins, two phases of mineralization events have been identified in the Yandong copper mining area: the first phase is porphyry mineralization, and the second phase is superimposed reworking. Fluids in both phases evolved from high temperature to low temperature. Sericite Ar-Ar dating reveals that the first mineralization phase occurred at approximately 333 Ma, which was likely triggered by the intrusion of the ore-bearing plagiogranite porphyry; molybdenite Re-Os dating indicates that the second mineralization phase formed at around 323 Ma, which may have been caused by the intrusion of quartz albitite porphyry.
提供机构：
中国科学院广州地球化学研究所
创建时间：
2020-05-20
