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| 中甸火山-岩浆弧燕山期热林复式岩体演化 与Ar-Ar 定年及铜钼矿化 | |
| 引用本文： | 尹光侯.中甸火山-岩浆弧燕山期热林复式岩体演化 与Ar-Ar 定年及铜钼矿化[J].地质与勘探,2009,45(4):385-394. |
| 作者姓名： | 尹光侯 |
| 作者单位： | 1. 云南省地质调查局,昆明,650051 2. 中国地质科学院矿产资源研究所,北京,100037 3. 中国地质大学,北京,100083 |
| 基金项目： | 国家科技支撑课题“三江”中南段铜、铅锌、金、多金属矿床综合勘查评价技术研究(编号:2006BAB01A07)资助 |
| 摘 要： | 产于中甸印支期火山一岩浆弧北东缘的燕山期热林复式岩体,从早至晚边部到中部划分出主期由细粒似斑状二长花岗岩→中粒似斑状二长花岗岩和边部补充期二长花岗斑岩5个侵入体组成的同源岩浆细粒→中粒→斑状结构演化系列.岩体岩石化学、稀土和微量元素总体反映为同熔型花岗岩特征.在复式岩体Ⅱ号侵入体中粒似斑状二长花岗岩中获黑云母Ar-Ar同位素等时年龄81.7±1.1Ma,坪年龄82.01±0.86 Ma,属燕山晚期侵入体.铜钼矿主要产于晚期侵入体中,边部细粒花岗岩和角岩内带具有细脉状黄铜矿、团块状辉钼矿化;中部发生二长花岗(斑)岩热液蚀变充填交代辉钼矿化--辉钼矿石英细脉、中粗晶浸染状;以及沿裂隙发育岩浆期后含矿热液充填交代辉钼矿化,构成燕山期花岗斑岩铜钼成矿亚系列.成因类型:蚀变花岗斑岩、石英脉型和角岩型3种,指示了燕山期二长花岗斑岩类具有较好的铜钼找矿潜力. |
| 关 键 词： | 中甸热林 结构演化系列 铜钼矿化类型 Ar-Ar同位素 燕山晚期 |
| 收稿时间： | 2009/5/26 0:00:00 |
| 修稿时间： | 6/8/2009 12:00:00 AM |
The Evolution of Relin Uplex Rock Masses in Yanshan Phase and Ar-Ar Dating Age and Copper-molybdenum Mineralization Characteristics of Zhongdian Volcanic-magma Arc |
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| YIN Guang-hou.The Evolution of Relin Uplex Rock Masses in Yanshan Phase and Ar-Ar Dating Age and Copper-molybdenum Mineralization Characteristics of Zhongdian Volcanic-magma Arc[J].Geology and Prospecting,2009,45(4):385-394. | |
| Authors: | YIN Guang-hou |
| Institution: | 1.Yunnan Institute of Geological Survey;Kunming 650051;2.Institute of Mineral Resources;China Academy of Geological Sciences;Beijing 100037;3.China University of Geologices;Beijing 100083 |
| Abstract: | The Relin composite rock body along the northeast margin of Gezhavolcanic-magmatic island arc of Zhongdian can be divided into 4intrusive bodies of fine grained quasi-porphyritic adamellite,medium grained quasi-porphyritic adamellite and adamelite porphyry of marginal complementary phase from the earlier to the later and from the margin to the center,Which form a cognate magmatic fine grained-medium grained-porphyritic structural evolution series.The petrochemistry,REE and trace element of rock body general... |
| Keywords: | Zhongdian relin adamellite structure copper-molybdenum mineralization types Ar-Ar istope Yanshan Phase |
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