TY - JOUR
T1 - Further examples of archaeal-derived hydrocarbons in mid-Cretaceous oceanic anoxic event (OAE) 1b sediments
AU - Okano, Kazuki
AU - Sawada, Ken
AU - Takashima, Reishi
AU - Nishi, Hiroshi
AU - Okada, Hisatake
N1 - Funding Information:
We thank Dr G. Fabienne of Université Claude Bernard Lyon I, Prof. L. Beaufort of Université Aix Marseille, and Prof. N. Suzuki of Hokkaido University for valuable discussions. The study was supported in part by Grants-In-Aid No. 15253007 (to HO) and No. 18684028 (to KS), and the 21st Century COE Grant, for the “Neo-Science of Natural History by Scientific Research” Program (Leader Prof. H. Okada) from the Ministry of Education, Culture, Sports, Science and Technology of Japan. We are grateful to an anonymous reviewer and R.D. Pancost for constructive comments.
PY - 2008/8
Y1 - 2008/8
N2 - Biomarker and total organic carbon (TOC) analyses were carried out on laminated black shales and massive marls from the Goguel level (OAE1a) and the Paquier and Kilian levels (OAE1b) of the Vocontian Basin of southeast France. TOC content was high (ca. 3-8%) throughout the Goguel, the Paquier and Kilian levels. Archaeal-derived hydrocarbons such as 2,6,15,19-tetramethylicosane (TMI) and 2,6,10,15,19-pentamethylicosane (PMI) were present in the OAE1b sediments, as reported previously [Kuypers, M.M.M., Blokker, P., Erbacher, J., Kinkel, H., Pancost, R.D., Schouten, S., Sinninghe Damsté, J.S., 2001. Massive expansion of marine archaea during a mid-Cretaceous oceanic anoxic event. Science 293, 92-94]. However, we did not detect these archaeal biomarkers in the Goguel level, confirming that the prevalence of archaea producing TMI and PMI was restricted to OAE1b.
AB - Biomarker and total organic carbon (TOC) analyses were carried out on laminated black shales and massive marls from the Goguel level (OAE1a) and the Paquier and Kilian levels (OAE1b) of the Vocontian Basin of southeast France. TOC content was high (ca. 3-8%) throughout the Goguel, the Paquier and Kilian levels. Archaeal-derived hydrocarbons such as 2,6,15,19-tetramethylicosane (TMI) and 2,6,10,15,19-pentamethylicosane (PMI) were present in the OAE1b sediments, as reported previously [Kuypers, M.M.M., Blokker, P., Erbacher, J., Kinkel, H., Pancost, R.D., Schouten, S., Sinninghe Damsté, J.S., 2001. Massive expansion of marine archaea during a mid-Cretaceous oceanic anoxic event. Science 293, 92-94]. However, we did not detect these archaeal biomarkers in the Goguel level, confirming that the prevalence of archaea producing TMI and PMI was restricted to OAE1b.
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U2 - 10.1016/j.orggeochem.2008.04.022
DO - 10.1016/j.orggeochem.2008.04.022
M3 - Article
AN - SCOPUS:47849101645
SN - 0146-6380
VL - 39
SP - 1088
EP - 1091
JO - Organic Geochemistry
JF - Organic Geochemistry
IS - 8
ER -
