| 郭建强.四川雅江措纳玛杂岩体成矿地质条件分析[J].地质与勘探,2017,53(3):413-424 |
| 四川雅江措纳玛杂岩体成矿地质条件分析 |
| Analysis on metallogenic geological conditions of the Cuonama complex body in Yajiang county, Sichuan Province |
| 投稿时间：2016-04-21 修订日期：2016-05-20 |
| DOI：10.12134/j.dzykt.2017.03.001 |
| 中文关键词: 措纳玛杂岩体 成矿地质条件 成矿地质体 花岗斑岩 四川雅江 |
| 英文关键词: Cuonama complex body, metallogenic geological condition, metallogenic geological body, granite porphyry, Yajiang county of Sichuan Province |
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| 摘要点击次数: 2241 |
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| 中文摘要: |
| 四川雅江措纳玛杂岩体位于甘孜-理塘断裂带中段东缘，由日勒玛、格希、措纳玛、购隆、下德差、多隆等6个岩体组成，岩性包括石英闪长岩、黑云母花岗闪长岩、黑云母二长花岗岩、花岗斑岩。属同源岩浆演化序列，形成时代为晚三叠世。通过对措纳玛杂岩体的岩石学、岩石化学、岩石地球化学，蚀变矿化等特征的分析，以及与华南南岭含矿花岗岩、江西大湖塘地区燕山期含钨花岗斑岩、新英格兰含锡花岗岩等典型钨锡矿化花岗岩、西藏玉龙斑岩和扬子地台西缘含矿斑岩的对比研究，确定措纳玛杂岩各期岩体的含矿性，尤其钨钼随杂岩体的岩浆演化程度增高而在晚期的斑岩中矿化最佳。由此确定晚期的格希岩体——花岗斑岩为研究区成矿地质体，勘查区的矿化中心，指出了找矿方向。 |
| 英文摘要: |
| The Cuonama complex body in Yajiang county of Sichuan Province is located in the east part of the middle Ganzi-Litang fracture zone. It consists of the Rilema, Gexi, Cuonama, Goulong, Xiadechai and Duolong rock bodies, and the lithology is mainly quartz diorite, biotite granodiorite, biotite monzonitic granite and granite porphyry. This complex body belongs to a comagmatic evolution succession which was formed in the Late Triassic. This work analyzed the characteristics of petrology, petrochemistry, petrogeochemistry, alteration and mineralization of this complex body, and did comparative study with typical tungsten-tin mineralized granite (the Naling ore-bearing granite in South China, Yanshanian tungsten-bearing granite porphyry in Dahutang area in Jiangxi Province and New England tin-bearing granite) and the Yulong Porphyry and the ore-bearing granite porphyry in western margin of the Yangtze Platform. We confirm the ore-bearing potential of these rock bodies, and infer that the late-stage rock body has undergone the strongest mineralization with the increasing magmatic evolution. It is thus suggested that the late-stage Gexi granite porphyry body is a metallogenic geological body and should be a mineralization center in the study area. This work provides important prospecting direction of the study area. |
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