胜利油田富CO_2含金流体及有关成因问题  

Auriferous CO_2-rich Fluids in Shengli Oilfield. Shandong Province and Their Origin

作　　者：赫英[1] 廖永胜[2] 

机构地区：[1]西北大学大陆动力学教育部重点实验室,西北大学地质系西安710069 [2]胜利石油管理局地质研究院,山东东营257015

出　　处：《地质论评》2001年第5期500-507,共8页Geological Review

基　　金：国家973项目(编号G1999043211);国家自然科学基金(编号49972034)

摘　　要：本文分析了胜利油田火山岩中的Au含量,发现CO_2气藏区火山岩和非CO_2气藏区火山岩中Au含量有明显区别:前者合Au很高,平均327×10^(-9),最高2150×10^(-9);而后者含Au很低,平均只有2.5×10^(-9)。这一基本事实提供了CO_2与金矿化间联系的直接地质证据,指出了在中国东部郯庐断裂两侧找寻新的金矿资源的方向与可能性。研究表明,地幔及其岩浆去气对形成富CO_2含Au热液系统有重要的贡献,而一个由深部稳定热源驱动、富含地幔及其岩浆去气带入的CO_2和Au并与地壳浅部流体混合的热液环流系统是形成重要金矿化的必要条件。The Au content in the volcanic rocks from the Shengli oilfield, Shandong Province, was analyzed. There are significant differences in the Au content of the volcanic rocks between CO2 gas-fields and non-CO2 gas-field-s: the Au content in the volcanic rocks from CO2 gas-fields ranges from 0. 0031 × 10-6 to 2- 15×10-6(average; 0. 327 × 10-6), whereas the Au content in the volcanic rocks from non-CO2 gas-fields ranges from less than 0. 0001 ×10-6 to 0. 0055×10-6(average: 0. 0025×10-6), suggesting the genetic relationship between Au and CO2 and the possibility of discovering new gold deposits in the CO2 gas-fields on the both sides of the Tancheng-Lujiang fault zone of eastern China. Combining with relevant materials, the research indicates that the mantle-derived magma-degassing may contributed greatly to the hydrothermal convection system that was driven by a steady-going deep heat source, enriched with volatile Au and associated CO2 exsolved from the magma, and mixed with meteoric water.

关 键 词：CO2气藏 富CO2含Au流体 岩浆去气 胜利油田 金矿化 二氧化碳 金 地幔 岩浆 火山岩 

分 类 号：P618.13[天文地球—矿床学]