Geochemical patterns in sediments near offshore production platforms

Les caracteristiques geochimiques des sediments adjacents a trois plates-formes de production (par 22 a 150, d'eau) dans le nord-ouest du golfe du Mexique ont ete determinees a partir de la presence de l'ouvrage, de la quantite et du type de materiaux liberes par l'ouvrage, et du contexte hydrographique local. Les sediments proches des plates-formes ( 80 m), les concentrations des metaux a l'etat de traces dans les sediments n'ont pas varie pendant des annees. Il s'est avere que quelques metaux (Pb, Cd) se sont constamment accumules dans les sediments depuis la mise a l'eau de la plate-forme.

[1]  B. J. Presley,et al.  The effects of exploratory petroleum drilling in the northwest gulf of mexico on trace metal concentrations in near rig sediments and organisms , 1987 .

[2]  P. Montagna,et al.  Gulf of Mexico Offshore Operations Monitoring Experiment (GOOMEX), Phase I: Sublethal responses to contaminant exposure — introduction and overview , 1996 .

[3]  S. Brassell,et al.  Natural Background of Alkanes in the Aquatic Environment , 1978 .

[4]  C. Bedinger.  Ecological Investigations Of Petroleum Production Platforms In The Central Gulf Of Mexico - Preliminary Findings , 1979 .

[5]  D.V. Aurand.  The future of the Department of the Interior OCS studies program , 1988, OCEANS '88. 'A Partnership of Marine Interests'. Proceedings.

[6]  L. G. Morgan,et al.  The Potential for Biological Effects of Sediments-Sorbed Contaminants Tested in the National Status and Trends Program , 1990 .

[7]  R. Philp.  Fossil Fuel Biomarkers: Applications and Spectra , 1985 .

[8]  Brian S. Middleditch,et al.  Environmental Effects of Offshore Oil Production: The Buccaneer Gas and Oil Field Study, Marine Science 14 , 1983 .

[9]  R. Philp,et al.  Methods in geochemistry and geophysics, 23: fossil fuel biomarkers, applications and spectra : Elsevier, Amsterdam, 1985 (ISBN 0-444-42471-7). xi + 294 pp. Price $63.00. , 1987 .

[10]  P. Boehm,et al.  Overview of the recent sediment hydrocarbon geochemistry of Atlantic and Gulf Coast outer continental shelf environments , 1986 .

[11]  G. Lauenstein,et al.  Sampling and analytical methods of the National Status and Trends program National Benthic Surveillance and Mussel Watch Projects, 1984-1992 , 1993 .