| 热作用参数在成金作用分析中的应用——以滇黔桂"金三角"区为例 |
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| 引用本文： | 吴江,李思田.热作用参数在成金作用分析中的应用——以滇黔桂"金三角"区为例[J].地球科学,1993,2(6). |
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| 作者姓名： | 吴江 李思田 |
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| 作者单位： | 武警黄金指挥部
(吴江),中国地质大学矿产系(李思田) |
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| 摘 要： | 本文通过现代居里面与高温热水泉的分布、钻孔测温资料以及华南不同时代花岗岩带的分布,证明了右江盆地域处于地热异常区,分别根据广布于本区的上二叠统煤层的镜质组反射率、下三叠统中牙形石的色变指数,编绘了趋势性等值线图,并建立了变质古地热场,阐述了这一古地热场与成矿地热场之间的关系,最后作了两项应用:(1)结合成矿温度研究右江盆地域金矿层位的分带性,并提出一种预测思路;(2)推断隐伏岩体的存在及其埋深,并与高精度航磁的解译成果相印证,进而结合一些同位素年龄值,确定成矿期时存在岩浆活动。
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| 关 键 词： | 热作用参数 滇黔桂“金三角区” 右江盆地 微细粒浸染型金矿 镜质组反射率 牙形石色变指数 古地热场 隐伏岩体 |
APPLICATION OF THERMAL-PROCESS PARAMETERS IN ORE-FORMING PROCESS ANALYSIS: A CASE STUDY OF "GOLD-TRIANGLE AREA" BETWEEN YUNNAN PROVINCE , GUIZHOU PROVINCE AND GUANGXI ZHUANG AUTONOMOUS REGION |
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| Wu jiang Li Sitian.APPLICATION OF THERMAL-PROCESS PARAMETERS IN ORE-FORMING PROCESS ANALYSIS: A CASE STUDY OF "GOLD-TRIANGLE AREA" BETWEEN YUNNAN PROVINCE , GUIZHOU PROVINCE AND GUANGXI ZHUANG AUTONOMOUS REGION[J].Earth Science-Journal of China University of Geosciences,1993,2(6). |
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| Authors: | Wu jiang Li Sitian |
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| Abstract: | Based on the distribution of modern Curie isotherm and high temperature hot springs, borehole temperature survey data from Youjiang Basin and the distribution of various stages of granite zones in south China, it is proved that Youjiang Basin is located in a geothermal anomaly area. Then, according to vitrinite reflectance isogram and conodont color alteration index isogram, the ancient geothermal field is built, and its close relation with ore-forming geothermal field is proved. According to the research above, the paper explains the reason why the country strata of gold deposits were upgraded from edge to center in Youjiang Basin, and presents a new conception for predicting micro-disseminated gold deposits in the area. The paper also infers the presence and depth of hidden rock mass and draws an inference in agreement with the interpretation of high-precision aeromagnetic anomaly. Finally, the paper determines a magmatic activity during ore-forming process with the help of some isotopic age data. |
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| Keywords: | thermal-process parameters "Gold Triangle Area" between Yunnan and Guizhou Provinces and Guangxi Zhuang Autonomous Region Youjiang Basin microdissemi- nated gold deposit vitrinite reflectance conodont color alteration index ancient geothe |
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