Eastern Mediterranean sapropels: chemical structure, deposition and relation to oil-shales


Dick C., Ediger V., Fabbri D., Gaines A., Love G., McGinn A., ...More

FUEL, vol.81, no.4, pp.431-448, 2002 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81 Issue: 4
  • Publication Date: 2002
  • Doi Number: 10.1016/s0016-2361(01)00184-3
  • Journal Name: FUEL
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.431-448
  • Keywords: sapropels, kerogen, pyrolysis-gas chromatography/mass spectrometry, CPMAS NMR, Hy-Py, ORGANIC GEOCHEMISTRY, KEROGENS, TEMPERATURE, HOPANOIDS, SEDIMENTS, ORIGIN, MATTER, COALS

Abstract

Ten sapropels, deposited in three different basins of the eastern Mediterranean since the Miocene and selected from cores of the Deep Sea Drilling Programme have been characterised by elemental analysis; fluorescence, infra-red and NMR spectrometry, by pyrolysis-gas chromatography/mass spectrometry and by catalytic hydrogenation at moderately high pressure. The sapropels are Types I-II kerogens, which have been oxidised, probably by a front experienced, since their deposition. Only one, from the Cretan basin, contained structures from lignin. The others, typical of a marine deposition, possessed aromaticities of about 0.2. Their detailed organic structures are described. (C) 2001 Elsevier Science Ltd. All rights reserved.