地幔流体中碳、氢的赋存形式及其同位素组成

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (4): 273-276.

• 油气勘探 • 下一篇

地幔流体中碳、氢的赋存形式及其同位素组成

吴茂炳, 刘春燕

石油大学资源与信息学院,北京 100083

收稿日期:2002-09-28 修回日期:2003-01-09 出版日期:2003-08-01 发布日期:2021-01-13
作者简介:吴茂炳(1964-), 男,江西玉山人,博士,石油地质与地球化学。联系电话:010-62396246
基金资助:
中国科学院兰州地质研究所气体地球化学国家重点实验室基金(2002-03wmb)和中国博士后科学基金资助。

Carbon and Hydrogen Existing Forms and Their Isotopic Compositions in Mantle Fluids

WU Mao-bing, LIU Chun-yan

Cole of Reoures and Inormatin, University of Ptroleum, Bejing 10200 China

Received:2002-09-28 Revised:2003-01-09 Online:2003-08-01 Published:2021-01-13

摘要/Abstract

摘要： 阐述了地球深部流体的性质,地幔流体中碳、氢的赋存形式及其同位素组成。地幔中的碳主要以金伯利岩中的金刚石、碳酸岩、地幔包体中的CO₂流体包裹体和石墨、大洋中脊溢出的CO₂等形式存在;碳同位素组成主要分布在-5‰附近,在-2‰~-10‰变化,并在-14‰~-24‰区段也有分布。氢赋存在地幔矿物的气液包裹体、浆胞及矿物裂隙、矿物结构(0H-)及结构通道(H°)中和早期结晶矿物的超显微包裹体中;氢同位素的组成为-30‰~-90‰,分布范围较宽。这些认识对有机、无机或混合成因油气藏碳、氢同位素组成的解释有指导意义。

关键词: 地幔, 流体, 碳同位素, 氢同位素, 同位素组成, 赋存形式

Abstract: Much progress has been made on studies of isotopic compositions and existing forms of carbon and hydrogen in mantle fluid during the last two decades by researchers at home and abroad using various analytical techniques. It is commonly recognized that carbon exists in the forms of diamond in kimberlite, liquid inclusions in carbonates and xenoliths, graphite and the CO₂ erupted from mid-ridge of oceans. δ¹³C values are mainly around -5‰ with ranges of -2‰~-10‰ and -14‰~24‰. Hydrogen often exists in the forms of 0H^-, H°, liquid inclusions, super-micro inclusions, magma cells and fractures in minerals from the mantle. Its isotopic composition accounts for -30‰~-90‰. This study is helpful for well interpreting carbon and hydrogen isotopic compositions of organic, inorganic and mixed origins of hydrocarbons.

Key words: mantle, fluid, carbon isotope, hydrogen isotope, isotopic composition, existing form

中图分类号:

P591.1
P595

吴茂炳, 刘春燕. 地幔流体中碳、氢的赋存形式及其同位素组成[J]. 新疆石油地质, 2003, 24(4): 273-276.

WU Mao-bing, LIU Chun-yan. Carbon and Hydrogen Existing Forms and Their Isotopic Compositions in Mantle Fluids[J]. Xinjiang Petroleum Geology, 2003, 24(4): 273-276.

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地幔流体中碳、氢的赋存形式及其同位素组成

Carbon and Hydrogen Existing Forms and Their Isotopic Compositions in Mantle Fluids

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