CHARACTERIZATION OF ORGANIC-MATTER ASSOCIATED WITH URANIUM DEPOSITS IN THE FRANCEVILLIAN FORMATION OF GABON (LOWER PROTEROZOIC)

被引：61
|
作者：
CORTIAL, F
GAUTHIERLAFAYE, F
LACRAMPECOULOUME, G
OBERLIN, A
WEBER, F
机构：
[1] SOC NATL ELF AQUITAINE,F-64000 PAU,FRANCE
[2] UNIV PAU & PAYS ADOUR,MARCEL MATHIEU LAB,CNRS,F-64000 PAU,FRANCE
来源：
ORGANIC GEOCHEMISTRY | 1990年 / 15卷 / 01期
关键词：
Francevillian; Gabon; Lower Proterozoic; organic matter; organo-uraniferous complexes; uranium;
D O I：
10.1016/0146-6380(90)90185-3
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Elemental analysis, organic petrography, and high-resolution transmission electron microscopy were used to study organic matter in Lower Proterozoic rocks of the Francevillian Series in Africa. Results show a convincing relationship between solid bitumens derived from thermal alteration of crude oil, and deposition of uraninite ores. Evidence is presented that suggests the presence of migration paths for crude oil in associated sandstones. Moreover, the solid bitumens appear to have been further altered by radiation damage as a consequence of oxidation and uranium mineralization. © 1990.
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页码：73 / 85
页数：13
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