P. Arthur, 1. M. Arthur, and I. Silva, Development of widespread organic carbon-rich strata in the Mediterranean Tethys, Nature and Origin of Cretaceous Carbon-rich facies, pp.9-54, 1982.

. Beaudoin, Lithostratigraphie haute résolution (<20 ka) dans le Cénomanien du bassin d'Ombrie-Marches (Italie) Comptes Rendus de l'Académie des Sciences Paris 323 Series Iia, pp.689-696, 1996.

. R. Behl and . Behl, Mixing of biogenic siliceous and terrigenous clastic sediments: South Belridge Field and Beta Field, California. American Association of Petroleum Geologists Bulletin, vol.74, pp.760-781, 1990.

. Virlet, The resistant polymer of the walls of the hydrocarbon-rich alga Botryococcus braunii, Phytochemistry, vol.22, pp.389-397, 1983.

. Blokker, A comparative study of fossil and extant algaenans using ruthenium tetroxide degradation, Geochimica et Cosmochimica Acta, vol.64, issue.12, pp.2055-2065, 2000.
DOI : 10.1016/S0016-7037(00)00367-7

. De-boer, . P. Smith, D. G. De-boer, and . Smith, Orbital forcing and cyclic sequences, Special Publication of the International Association of Sedimentologists, vol.19, pp.1-14, 1994.

. Derenne, Structure of Chlorella fusca algaenan: relationships with ultralaminae in lacustrine kerogens; species- and environment-dependent variations in the composition of fossil ultralaminae, Organic Geochemistry, vol.18, issue.4, pp.417-422, 1992.
DOI : 10.1016/0146-6380(92)90104-6

. Derenne, Chemical structure of the organic matter in a Pliocene maar-type oil shale. Implicated Botryococcus races and formation pathways, Geochimica et Cosmochimica Acta, pp.61-1879, 1997.

D. , N. B. Durand, and G. Nicaise, Procedures for kerogen isolations, pp.35-53, 1980.

. Espitalié, Role of mineral matrix in kerogen pyrolysis; influence on petroleum generation and migration, American Association of Petroleum Geologists Bulletin, vol.64, pp.59-66, 1980.

. Espitalié, La pyroloyse Rock-Eval et ses applications; deuxième partie, pp.755-784, 1985.

J. W. Hatcher and . De-leeuw, Novel, resistant microalgal polyethers: an important sink in the marine environment, Geochimica et Cosmochimica Acta, vol.60, pp.1275-1280, 1996.

. Gelin, Distribution of aliphatic, nonhydrolyzable biopolymers in marine microalgae, Organic Geochemistry, vol.30, issue.2-3, pp.147-159, 1999.
DOI : 10.1016/S0146-6380(98)00206-X

. Gillaizeau, Source organisms and formation pathway of the kerogen of the G??yn??k Oil Shale (Oligocene, Turkey) as revealed by electron microscopy, spectroscopy and pyrolysis, Organic Geochemistry, vol.24, issue.6-7, pp.671-679, 1996.
DOI : 10.1016/0146-6380(96)00058-7

C. Hatcher, 1. P. Hatcher, and D. J. Clifford, The organic geochemistry of coal: from plant materials to coal, Organic Geochemistry, vol.27, issue.5-6, pp.181-188, 1997.
DOI : 10.1016/S0146-6380(97)00051-X

S. P. Hatcher, E. C. Hatcher, and . Spiker, Selective degradation of plant biomolecules, Humic Substances and Their Role in the Environments, pp.59-74, 1988.

1. F. Isherwood and . Isherwood, Biosyntheis of lignin, Biosynthetic Pathways in Higher Plants, pp.133-146, 1965.

U. H. Klemme, G. F. Klemme, and . Ulmishek, Effective petroleum source rocks of the world: stratigraphic distribution and controlling depositional factors, American Association of Petroleum Geologists Bulletin, vol.75, pp.1809-1851, 1991.

D. Largeau and . Leeuw, Insoluble, Nonhydrolyzable, Aliphatic Macromolecular Constituents of Microbial Cell Walls, Advances in Microbial Ecology, vol.14, pp.77-118, 1995.
DOI : 10.1007/978-1-4684-7724-5_2

. Largeau, Pyrolysis of immature Torbanite and of the resistant biopolymer (PRB A) isolated from extant alga Botryococcus braunii. Mechanism of formation and structure of torbanite, Organic Geochemistry, vol.10, issue.4-6, 1986.
DOI : 10.1016/S0146-6380(86)80041-9

J. Leythaeuser and . Rullkötter, Advances in Organic Geochemistry, Organic Geochemistry, vol.10, pp.1023-1032, 1985.

. De-leeuw, 1. J. Largeau, C. De-leeuw, and . Largeau, A Review of Macromolecular Organic Compounds That Comprise Living Organisms and Their Role in Kerogen, Coal, and Petroleum Formation, Organic Geochemistry, pp.23-72, 1993.
DOI : 10.1007/978-1-4615-2890-6_2

D. Marcellari, . C. Vries, T. J. Marcellari, and . De-vries, Late Cretaceous upwelling and anoxic sedimentation in northwestern South America, Palaeogeography, Palaeoclimatology, Palaeoecology, vol.59, pp.279-292, 1987.
DOI : 10.1016/0031-0182(87)90086-1

M. 'ban,-1994.-m-'ban and E. P. , Evolution de la sédimentation pélagique au Crétacé supérieur des Marches et de l'Ombrie (Italie Centrale). Litho-Biostratigraphie, p.256, 1994.

1. J. Oehler and . Oehler, Experimental studies in Precambrian paleontology: Structural and chemical changes in blue-green algae during simulated fossilization in synthetic chert, Geological Society of America Bulletin, vol.87, issue.1, pp.117-129, 1976.
DOI : 10.1130/0016-7606(1976)87<117:ESIPPS>2.0.CO;2

. Connan, Pyrolytic and spectroscopic study of a sulphur-rich kerogen from theKashpir oil shales" (Upper Jurassic, Russian Platform), Organic Geochemistry, vol.31, pp.1641-1661, 2000.

. Riboulleau, Origin of contrasting features and preservation pathways in kerogens from the Kashpir oil shales (Upper Jurassic, Russian Platform), Organic Geochemistry, vol.32, issue.5, pp.647-665, 2001.
DOI : 10.1016/S0146-6380(01)00017-1

D. Saiz-jimenez, . C. Leeuw, J. W. Saiz-jimenez, and . De-leeuw, Lignin pyrolysis products: Their structures and their significance as biomarkers, Organic Geochemistry, vol.10, issue.4-6, pp.869-876, 1986.
DOI : 10.1016/S0146-6380(86)80024-9

URL : http://hdl.handle.net/10261/81077

. Mariotti, Kerogen chemical structure and source organisms in a Cenomanian organic-rich black shale (Central Italy)?Indications for an important role of the "sorptive protection" pathway, Organic Geochemistry, vol.27, pp.423-438, 1997.

. Salmon, Modes d'accumulation de la matière organique dans des "black shales, p.242, 1999.

. Salmon, Protection of organic matter by mineral matrix in a Cenomanian black shale, Organic Geochemistry, vol.31, issue.5, pp.463-474, 2000.
DOI : 10.1016/S0146-6380(00)00013-9

URL : https://hal.archives-ouvertes.fr/hal-00115181

S. Damsté, Structural characterization of aliphatic, non-hydrolysable biopolymers in freshwater algae and a leaf cuticle using ruthenium tetroxide degradation, Phytochemistry, vol.49, pp.987-993, 1998.

W. B. Tissot and D. H. Tissot, Welte, Petroleum, Formation and Occurrence, 1984.