ACCELERATED TRANSFORMATION OF ORGANIC-MATTER BELOW THE SILICA TRANSITION ZONE IN IMMATURE SEDIMENTS FROM THE JAPAN SEA

Authors
LICHTFOUSE E RULLKOTTER J
Citation
E. Lichtfouse et J. Rullkotter, ACCELERATED TRANSFORMATION OF ORGANIC-MATTER BELOW THE SILICA TRANSITION ZONE IN IMMATURE SEDIMENTS FROM THE JAPAN SEA, Organic geochemistry, 21(5), 1994, pp. 517-523
Citations number
19
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Organic geochemistry → ACNP
ISSN journal
01466380
Volume
21
Issue
5
Year of publication
1994
Pages
517 - 523
Database
ISI
SICI code
0146-6380(1994)21:5<517:ATOOBT>2.0.ZU;2-Z
Abstract
Notable compositional changes of organic matter are observed below the silica transition zone in thermally immature sediments. The increase of bitumen ratio, and hopane and sterane isomerization parameters indi cate an acceleration of the kinetics of the chemical reactions which t ransform the organic matter. This phenomenon is probably due to the nu merous mineral and textural changes induced by the transformation of a morphous biogenic silica into crystalline authigenic silica.