| 解惠,侯立平,农建刊,李作华,袁剑飞,刘维.西藏日喀则弧前盆地彭措林斑岩型铜多金属矿点的发现意义和成岩成矿时代约束[J].地质找矿论丛,2017,32(3):499-504 |
| 西藏日喀则弧前盆地彭措林斑岩型铜多金属矿点的发现意义和成岩成矿时代约束 |
| Significance of discovery of Pengcuolin porphyry copper polymetallic ore occurrence in the Xigaze forearc basin, Tibet and geochronologic constraints on the magmatic intrusions and mineralization |
| 投稿时间：2017-04-25 |
| DOI：10.6053/j.issn.1001-1412.2017.03.021 |
| 中文关键词: 日喀则弧前盆地 斑岩型铜多金属矿 LA-ICP-MS锆石测年 土壤测量异常特征 彭措林 西藏自治区 |
| 英文关键词:Xigaze forearc basin porphyry copper polymetallic deposit LA-ICP-MS zircon U-Pb age abnormal characteristics of soil measurement Pengcuolin Tibet |
| 基金项目:中国地质调查局项目"西藏拉孜县彭措林地区铜多金属矿调查评价"（编号：12120113035100）资助。 |
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| 中文摘要: |
| 在特殊的大地构造位置——西藏日喀则弧前盆地内新发现了彭措林斑岩型铜多金属矿点，从矿点成矿地质背景和地球化学特征推测，该矿点具有中型斑岩型铜多金属矿的找矿远景。与成矿关系密切的花岗闪长斑岩LA-ICP-MS锆石U-Pb法定年结果为（11.04±0.46）Ma，指示该矿点形成时代为晚喜马拉雅期，可能属于冈底斯斑岩铜矿带大规模成矿事件。该矿点的发现扩大了冈底斯斑岩铜矿带南成矿亚带的范围，使斑岩型铜矿今后的找矿空间一直向南扩大到日喀则弧前盆地。 |
| 英文摘要: |
| The Pengcuolin porphyry copper polymetallic ore occurrence is found in a special geotectonic location of the Xigaze forearc basin, Tibet. Its geological background and geochemical characteristics suggest that it is potential to be a medium sized porphyry Cu-polymetallic deposit. Zircon LA-ICP-MS U-Pb dating of the ore-related granodiorite porphyry is 11.04Ma±0.46Ma, indicating that the ore occurrence was formed during the late Himalayan epoch and may belonging to the large scale metallogenic event of Gangdese porphyry copper belt. The discovery would expand the south metallogenic belt of Gangdese porphyry copper belt to further south and the prospecting to the Xigaze forearc basin. |
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