EFFECT OF IGNEOUS INTRUSION ON THE ORGANIC GEOCHEMISTRY OF A SILTSTONE AND AN OIL-SHALE HORIZON IN THE MIDLAND VALLEY OF SCOTLAND

被引：78

作者：

GEORGE, SC

机构：

[1] Newcastle Research Group, University of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, Drummond Building

来源：

ORGANIC GEOCHEMISTRY | 1992年 / 18卷 / 05期

关键词：

SCOTLAND; IGNEOUS INTRUSION; SILTSTONE; OIL SHALE; THERMAL MATURATION; GC MS; AROMATIC HYDROCARBONS;

D O I：

10.1016/0146-6380(92)90097-H

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：

The effect of rapid thermal stress on the organic geochemistry of a siltstone intruded by a quartz-dolerite dyke and an oil shale intruded by an alkali-dolerite sill has been studied using optical petrography, Rock-Eval pyrolysis, gas chromatography and gas chromatography-mass spectrometry. Maturity-dependent ratios derived from both the aliphatic and aromatic hydrocarbon fractions corroborate the observation of Raymond and Murchison (1988b) that the alkali-dolerite sills, which were intruded soon after sedimentation, had a lesser effect than the later quartz-dolerite intrusions. The maturity parameters based on the alkylnaphthalene and alkylphenanthrene isomer ratios are more suitable for studying maturity variations in heat-affected samples than those based on the commonly-used aliphatic biological markers. These aromatic compounds survive to higher ranks and the isomer ratios continue changing.

引用

页码：705 / 723

页数：19

共 67 条

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