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Preliminary organic geochemical investigation of the Kimmeridgian oil shales. [United Kingdom]

Abstract

The Kimmeridge oil shales have assumed renewed significance because of their role as the prime source-rock for North Sea oil, and because of the need to assess their potential as a possible future supply of shale oil. This paper presents the results of a preliminary investigation of selected Kimmeridge oil shales. The immature shales are rich in organic matter with a dominantly marine type II kerogen showing evidence of algal contributions and a general sparsity of land-derived, higher plant detritus. Column chromatographic and capillary column gas chromatographic examinations of bitumens, pyrolysates and pyrolysis gas chromatograms of kerogen isolates show a predominance of aromatics in the hydrocarbon fractions, with bitumen n-alkane gas chromatograms showing evidence of algal-derived organic matter with n-alkane maxima in the n-C/sub 17/ region. Possible contributions from lower land plants are indicated by a second n-alkane maximum at n-C/sub 23/, whilst higher land plant detritus makes only a limited contribution. Reflected light microscopic examination of the shales also shows a general sparsity of recognizable land-derived woody or herbaceous material. Shale oil compositions reflect their pyrolytic origin, with unsaturates forming a large part of the aliphatic hydrocarbon fraction, together with significant amounts of isoprenoid alkanes; organic sulphur compounds are  More>>
Publication Date:
Jan 01, 1980
Product Type:
Conference
Report Number:
CONF-7909224-
Reference Number:
EDB-82-161719
Resource Relation:
Journal Name: Phys. Chem. Earth; (United Kingdom); Journal Volume: 12; Conference: 9. international meeting on organic geochemistry, Newcastle-upon-Tyne, UK, 17 Sep 1979
Subject:
04 OIL SHALES AND TAR SANDS; 58 GEOSCIENCES; OIL SHALES; CHEMICAL ANALYSIS; UNITED KINGDOM; OIL SHALE DEPOSITS; ALKANES; AROMATICS; GAS CHROMATOGRAPHY; GEOCHEMISTRY; KEROGEN; NORTH SEA; PETROLEUM DEPOSITS; SHALE OIL; SOURCE ROCKS; ATLANTIC OCEAN; BITUMINOUS MATERIALS; CARBONACEOUS MATERIALS; CHEMISTRY; CHROMATOGRAPHY; ENERGY SOURCES; EUROPE; FOSSIL FUELS; FUELS; GEOLOGIC DEPOSITS; HYDROCARBONS; MATERIALS; MINERAL OILS; MINERAL RESOURCES; OILS; ORGANIC COMPOUNDS; ORGANIC MATTER; OTHER ORGANIC COMPOUNDS; RESOURCES; SEAS; SEPARATION PROCESSES; SURFACE WATERS; WESTERN EUROPE; 040500* - Oil Shales & Tar Sands- Properties & Composition; 580400 - Geochemistry- (-1989)
OSTI ID:
7154731
Research Organizations:
Newcastle upon Tyne Univ., England
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PCEAA
Submitting Site:
HEDB
Size:
Pages: 531-545
Announcement Date:

Citation Formats

Williams, P F.V., and Douglas, A G. Preliminary organic geochemical investigation of the Kimmeridgian oil shales. [United Kingdom]. United Kingdom: N. p., 1980. Web.
Williams, P F.V., & Douglas, A G. Preliminary organic geochemical investigation of the Kimmeridgian oil shales. [United Kingdom]. United Kingdom.
Williams, P F.V., and Douglas, A G. 1980. "Preliminary organic geochemical investigation of the Kimmeridgian oil shales. [United Kingdom]." United Kingdom.
@misc{etde_7154731,
title = {Preliminary organic geochemical investigation of the Kimmeridgian oil shales. [United Kingdom]}
author = {Williams, P F.V., and Douglas, A G}
abstractNote = {The Kimmeridge oil shales have assumed renewed significance because of their role as the prime source-rock for North Sea oil, and because of the need to assess their potential as a possible future supply of shale oil. This paper presents the results of a preliminary investigation of selected Kimmeridge oil shales. The immature shales are rich in organic matter with a dominantly marine type II kerogen showing evidence of algal contributions and a general sparsity of land-derived, higher plant detritus. Column chromatographic and capillary column gas chromatographic examinations of bitumens, pyrolysates and pyrolysis gas chromatograms of kerogen isolates show a predominance of aromatics in the hydrocarbon fractions, with bitumen n-alkane gas chromatograms showing evidence of algal-derived organic matter with n-alkane maxima in the n-C/sub 17/ region. Possible contributions from lower land plants are indicated by a second n-alkane maximum at n-C/sub 23/, whilst higher land plant detritus makes only a limited contribution. Reflected light microscopic examination of the shales also shows a general sparsity of recognizable land-derived woody or herbaceous material. Shale oil compositions reflect their pyrolytic origin, with unsaturates forming a large part of the aliphatic hydrocarbon fraction, together with significant amounts of isoprenoid alkanes; organic sulphur compounds are also prominent in the hydrocarbon fractions. Finally, considerable amounts of sterane and pentacyclic triterpane hydrocarbons have been found in the bitumen aliphatic hydrocarbon fractions, their distributions allowing Blackstone samples to be differentiated from those of lower stratigraphic levels.}
journal = {Phys. Chem. Earth; (United Kingdom)}
volume = {12}
place = {United Kingdom}
year = {1980}
month = {Jan}
}