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Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)
Author(s) -
Storme JeanYves,
Dupuis Christian,
Schnyder Johann,
Quesnel Florence,
Garel Sylvain,
Iakovleva Alina I.,
Iacumin Paola,
Di Matteo Antonietta,
Sebilo Mathieu,
Yans Johan
Publication year - 2012
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.2011.01044.x
Subject(s) - isotopes of carbon , geology , paleogene , isotope , stable isotope ratio , organic matter , paleontology , carbon fibers , total organic carbon , δ13c , environmental chemistry , structural basin , chemistry , composite material , physics , materials science , organic chemistry , quantum mechanics , composite number
Terra Nova, 24, 114–122, 2012 Abstract The Palaeocene/Eocene boundary (P/EB) and the Palaeocene–Eocene Thermal Maximum (55.8 Ma) are defined stratigraphically based on carbon isotope ratios of various materials. Here, the position of the P/EB is refined in the terrestrial–lacustrine and swampy Vasterival section (Upper Normandy coast, France) by using carbon isotopes measured on dispersed organic matter (δ 13 C org ). Moreover, nitrogen isotopes on dispersed organic matter (δ 15 N org ) are, for the first time in the Palaeogene record, associated with carbon isotope and lithological data to constrain palaeoclimatic and environmental changes around the P/EB in a terrestrial environment. Humid‐dry fluctuations before and during this key interval in Earth history are suggested.