Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Birgit Nabbefeld"'
Publikováno v:
Applied Geochemistry. 25:1374-1382
In this study the abundances of several polycyclic aromatic hydrocarbons (PAHs Table 1 , I–XXI ) have been measured throughout three Permian/Triassic (P/Tr) sections from Meishan (South China), Kap Stosch area (East Greenland) and Peace River Basin
Autor:
Arndt Schimmelmann, Richard J. Twitchett, Michael E. Böttcher, Peter E. Sauer, Birgit Nabbefeld, Kliti Grice
Publikováno v:
Earth and Planetary Science Letters. 295:21-29
For the first time we report δD of kerogen (δDkerogen) for three Permian–Triassic (P–Tr) sequences (Hovea#3, Perth Basin, Western Australia; Jameson Land, East Greenland and Lusitaniadalen, Spitsbergen). We have compared δDkerogen with δ13C o
Autor:
Richard J. Twitchett, Muhammad Asif, Michael E. Böttcher, Birgit Nabbefeld, Kliti Grice, Lindsay E. Hays, Roger E. Summons
Publikováno v:
Earth and Planetary Science Letters. 291:84-96
The largest extinction of the Phanerozoic occurred near the Permian/Triassic (P/Tr) boundary some 252 Ma ago. Several scenarios and drivers have been proposed for this event. Here we report for the first time an integrated study comprising sedimentol
Autor:
Ulrike Troitzsch, Kliti Grice, Arndt Schimmelmann, Birgit Nabbefeld, Roger E. Summons, Richard J. Twitchett
Publikováno v:
Organic Geochemistry. 41:78-87
In this study we compared various maturity dependent aromatic, steroid and triterpenoid hydrocarbon ratios in bitumens that are freely extractable from sedimentary rocks (Bitumen I) with those in second extracts that comprised hydrocarbons closely as
Publikováno v:
Organic Geochemistry. 38:1795-1803
Stable carbon isotopic data for polycyclic aromatic hydrocarbons (PAHs; chrysene and triphenylene, benzo(e)pyrene, 9-methylphenanthrene) in sediments of comparable thermal maturity from a petroleum drill core (Hovea-3 well, Perth Basin, Western Austr
Autor:
Birgit Nabbefeld, Kliti Grice, Stephen Fenton, Richard J. Twitchett, Michael E. Böttcher, Cindy V. Looy
Publikováno v:
Earth and Planetary Science Letters. 262:230-239
In this study, we report on biomarker abundances through parts of the Permian/Triassic boundary (PTB) of Schuchert Dal (East Greenland) that contains rich marine faunal records and excellent terrestrial palynological records. Biomarker abundances and