云南普洱大平掌铜多金属矿赋矿地层时代新拟定  

THE NEW FORMULATION OF THE ORE-BEARING STRATA AGE OF DAPINGZHANG COPPER POLYMETALLIC DEPOSIT IN PU'ER,YUNNAN

作　　者：尹静[1] 唐忠 尹光候 YIN Jing;TANG Zhong;YIN Guang-hou(Yunnan Institute of Land and Resources Planning and Design,Kunming 650051;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093;Yunnan Institute of Geological Survey,Kunming 650051;MNR Key Laboratory of SanjiangMetallogeny and Resources Exploration and Utilization,Kunming 650051;Yunnan Geological Survey,Kunming 650051)

机构地区：[1]云南省国土资源规划设计研究院,云南昆明650051 [2]昆明理工大学国土资源工程学院,昆明650093 [3]云南省地质调查院,昆明650051 [4]自然资源部三江成矿作用及资源勘查利用重点实验室,昆明650051 [5]云南省地质调查局,云南昆明650051

出　　处：《云南地质》2023年第1期24-30,共7页Yunnan Geology

摘　　要：大平掌火山岩型铜多金属矿赋矿岩系现划为晚泥盆世-早石炭世大凹子组(DC d)火山-沉积岩系。作者在“云南国土资源规划设计研究”中,因涉及并研究了该矿赋矿地层时代同位素年龄资料,矿区花岗闪长斑岩侵入火山岩中,金属硫化物矿体与火山岩密切共生,三者形成时间顺序为火山岩→矿体→花岗闪长斑岩,与之对应地质体同位素加权平均年龄值428.28±6Ma、420.8±1.6Ma、417.3±1.5Ma→410.9±6.0Ma、402±17.9Ma→401.0±1.7Ma,分别代表花岗闪长斑岩时代为晚志留世-早泥盆世,火山岩和金属硫化物形成时代为中-晚志留世-早泥盆世早期。大凹子组时代应修订为中志留统-早泥盆统(S 2-D 1 d)。The host rock series of the Dapingzhang volcanic-type copper polymetallic deposit is now classified asvolcanic-sedimentary rock series of the Dawazi Formation of the Late Devonian-Early Carboniferous(DCd).The granodiorite porphyry intruded into the volcanic rocks,and the metal sulfide ore body was closely associated with the volcanic rocks.Therefore,the sequence of their formationis volcanic rocks→ore body→granodiorite porphyry,and the corresponding isotope weighted average agesare 428.28±6Ma,420.8±1.6Ma,417.3±1.5Ma→410.9±6.0Ma 402±17.9 Ma→401.0±1.7 Ma,respectively,representing that theintrusion ofgranodiorite porphyryoccurred in the Late Silurian-early Devonian,while volcanic rocks and metal sulfide ore body were formed in the middle to late Silurian-early Devonian.The age of the Dawazi Formation should be revised to Middle Silurian-Early Devonian(S 2-D 1d).

关 键 词：赋矿地层 时代拟定 大平掌铜多金属矿 云南普洱 

分 类 号：P618.41[天文地球—矿床学]