gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.214 Information on Source Organisms and Early Degradation Through Complete Analysis of Acid Moieties in Surficial Marine Sediments in Areas Close to Main River Mouthes (Lena, Changjiang) Zegouagh Y. Derenne S. Largeau C. UMR CNRS 7573, ENSCP, 75231 Paris Cedex 05, France Saliot A. LPCM, URA CNRS 2076, UPMC, 4 place Jussieu, 75252 Paris Cedex 05, France 1998 62A 3 1681 1682 Copyright © 1998, The Mineralogical Society 1998