| 金属矿床成矿流体有机质的一种新来源: 烃源岩晶胞有机质 |
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| 引用本文： | 谢树成,王红梅.金属矿床成矿流体有机质的一种新来源: 烃源岩晶胞有机质[J].地球科学,2000,25(1):11-14. |
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| 作者姓名： | 谢树成 王红梅 |
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| 作者单位： | 中国地质大学地球科学学院，武汉 430074 |
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| 基金项目： | 国家自然科学基金项目49702021国家自然科学基金项目49672114 |
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| 摘 要： | 金属矿床有机质的来源问题是探讨生物成矿作用的重点和难点之一.赋存于石炭系的南京栖霞山多金属矿床, 其成矿流体中的有机质与下扬子区上、下古生界烃源岩吸咐有机质以及海相原油均存在较大差异.特别是表现在有机质族组成、三环萜的w(C23)/w(C21)比值、三萜w(Ts)/w(Tm)比值、w(γ-蜡烷)/w(C31αβS-升藿烷)比值以及甾烷系列的不同上.相反, 流体中的有机质在诸多方面与寒武系碳酸盐岩(矿床的矿源层之一)的晶胞有机质类似, 两者存在渊源关系.
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| 关 键 词： | 金属矿床 成矿流体有机质 晶胞有机质 生物标志化合物 南京 |
| 收稿时间： | 1999-03-30 |
A NEW SOURCE OF ORGANIC MATTER IN ORE-FORMING FLUID OF METALLIC DEPOSITS: ENCLOSED ORGANIC MATTER OF HYDROCARBON SOURCE ROCKS |
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| Abstract: | The source of the organic matter in the metallic deposit is one of the important and difficult issues for the research into the biological mineralization. Relatively great differences, especially in terms of organic group constituents, w(C23)/w(C21) ratios of tricyclicterpanes, w(Ts)/w(Tm) ratios of triterpene, w(γ-cerotene)/w(C31αβS-hopane) ratios, and steranes series, are present between the organic matter in the metallogenic fluid in the Qixiashan polymetallic deposit, Nanjing occurring in the Carboniferous dolomites, and that, present as marine petroleum, adsorbed in the Upper and Lower Paleozoic hydrocarbon source rocks in the lower Yangtze region. However, the organic matter in the fluid is similar in several aspects to the enclosed organic matter in the Cambrian carbonate rocks (i.e., one of the mineral source strata), since the two kinds of organic matters are related to each other in their origin. |
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