35. IDENTIFICATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN SEDIMENTS FROM THE AMAZON FAN: OCCURRENCE AND DIAGENETIC EVOLUTION¹

H. Budzinski,² P. Garrigues,² G. Bernard,² J. Bellocq,² K. Hinrichs,³ and J. Rullkötter³

ABSTRACT

The aromatic fractions of sediments from Hole 940A, Ocean Drilling Program, Leg 155, have been analyzed. A strong terrestrial contribution of organic matter was found, and some autochthonous inputs were recorded. The distributions of aromatic compounds were dominated by derivatives from amyrins. Diagenetic processes involved in aromatizations and isomerizations have been characterized.

¹Flood, R.D., Piper, D.J.W., Klaus, A., and Peterson, L.C. (Eds.), 1997. Proc. ODP, Sci. Results, 155: College Station, TX (Ocean Drilling Program).
²URA 348 CNRS, Université de Bordeaux I, 351 cours de la Libération, 33405 Talence, France. bud@cribx1.u-bordeaux.fr
³ICBM, Universität Oldenburg, Postfach 2503, D26111 Oldenburg, Federal Republic of Germany.