open access

https://hdl.handle.net/2115/42948

Probable fungal origin of perylene in Late Cretaceous to Paleogene terrestrial sedimentary rocks of northeastern Japan as indicated from stable carbon isotopes

英語

Eocene

2010-03

Elsevier

Organic Geochemistry

41(3)

234-241

Perylene is present in high concentration in Paleogene sediments from the Sanriku-oki borehole of the Ministry of International Trade and Industry (MITI), northeastern Japan. The borehole penetrates a thick sequence of Late Cretaceous to Neogene sediments deposited under a range of conditions, including fluvial-deltaic and shallow marine environments. Organic petrological and geochemical data show the sediments to be rich in organic matter derived from higher plants. Biomarker analysis of aliphatic and aromatic hydrocarbons confirms a significant input from higher plants, with extracts dominated by numerous gymnosperm- and angiosperm-derived biomarkers such as diterpanes, oleanenes, des-A-triterpanes and their aromatized counterparts. The highest concentration of perylene occurs in Middle Eocene sediments deposited in a relatively reducing environment. Stable carbon isotope compositions show 13C enrichment in perylene compared to gymnosperm and angiosperm biomarkers, suggesting a fungal origin. This elevated abundance of sedimentary perylene could relate to a Paleogene continental climate where fungi flourished.

学術雑誌論文

Accepted Manuscript

0146-6380