A new terrestrial vertebrate site just after the Paleocene–Eocene boundary in the Mortemer Formation of Upper Normandy, France

Smith, Thierry; Dupuis, Christian; Folie, Annelise; Quesnel, Florence; Storme, Jean Yves; Iacumin, Paola; Riveline, Janine; Missiaen, Pieter; Ladevèze, Sandrine; Yans, Johan

doi:10.1016/j.crpv.2010.11.004

Cited by 19 publications

(12 citation statements)

References 15 publications

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“…Soluble salts were removed by repetitive (1–10) centrifuging with deionised water until a neutral pH was obtained. Finally, residues were dried at 35 °C and powdered again (Smith et al. , 2011).…”

Section: Methodsmentioning

confidence: 99%

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

et al. 2012

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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 (d 13 C org ). Moreover, nitrogen isotopes on dispersed organic matter (d 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.

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Section: Methodsmentioning

confidence: 99%

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

et al. 2012

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“…The carbon isotope ratio of dispersed organic carbon and the total organic content (TOC) were measured on 45 samples. The complete methodology is described in Yans et al (2010) and Smith et al (2011). Organic 13 C values are reported in d 13 C notation normalised to the international VPDB standard (VPDB, Vienna Peedee Belemnite).…”

Section: Methodsmentioning

confidence: 99%

The Palaeocene/Eocene boundary section at Zumaia (Basque‐Cantabric Basin) revisited: new insights from high‐resolution magnetic susceptibility and carbon isotope chemostratigraphy on organic matter (δ¹³C_org)

Storme

Devleeschouwer²,

Schnyder

et al. 2012

Terra Nova

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Terra Nova, 24, 310–317, 2012 Abstract The Zumaia section, the most complete and representative section of the early Palaeogene (hemi)‐pelagic succession of the Pyrenees, is widely acknowledged as a key reference for the Palaeocene–Eocene boundary. New high‐resolution δ13Corg of the Zumaia section (−23.8 to −28.8‰) confirms the position of the Carbon Isotope Excursion and enhances the distinction between the different steps of the CIE/PETM event. According to new magnetic susceptibility data and detailed cycle counting, the entire duration of the CIE/PETM in Zumaia is estimated in ∼168 ± 16 ka. Moreover, the investigation of palynofacies and low‐field magnetic susceptibility reveal significant detrital influx during the interval. Several magnetic susceptibility phases and trends are recognised and are interpreted in terms of sea‐level fluctuations before, during and after the PETM. Coupled with results from other sections, our data reveal the presence of an unconformity followed by an eustatic sea‐level rise (TST) in the latest Palaeocene.

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“…These outcrops are well exposed, are continuously renewed by erosion and exhibit sediments with well-preserved OM. Furthermore, their central location with respect to the sub-basins of the North Sea Basin makes them reference sections for northwestern European terrestrial-shallow marine P-E deposits (Magioncalda et al, 2001;Aubry et al, 2005;Smith et al, 2011;Storme et al, 2012b).…”

Section: Introductionmentioning

confidence: 99%

Paleohydrological and paleoenvironmental changes recorded in terrestrial sediments of the Paleocene–Eocene boundary (Normandy, France)

Garel

Schnyder

Jacob

et al. 2013

Palaeogeography, Palaeoclimatology, Palaeoecology

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The Paleocene-Eocene boundary (55.8 Ma) is associated with the Paleocene-Eocene Thermal Maximum (PETM), which is characterized by a negative Carbon Isotope Excursion (CIE), reflecting a major perturbation of the carbon cycle, and by an extreme and rapid global warming. The Cap d'Ailly area (Upper Normandy, France), in which previous studies have revealed the Paleocene-Eocene transition, is a reference locality for organic-rich terrestrial and lagoonal deposits of the-Sparnacian‖ stage, widespread in Northwestern Europe. In this study, we focus on the organic matter content of the Vasterival section. Organic data (Rock-Eval, palynofacies, biomarker analyses and compound specific isotope analyses) were acquired in order to constrain the paleoenvironmental and paleohydrological changes that occurred at the Paleocene-Eocene boundary. Stable carbon isotope compositions of higher plant leaf wax n-alkanes reveal a CIE of-4.5 ‰, extending throughout the second half of the studied section. Palynofacies observations reveal: (i) an abrupt shift from a closed, quiescent marsh pond to an open eutrophic swamp subjected to algal blooms, concomitant with the onset of the CIE; and (ii) the evolution from a swamp to a tidal flat due to the marine transgression that occurred during the PETM. Higher plant biomarkers and their hydrogen isotopic composition compared to nitrogen analyses suggest: (i) dry episodes just before the PETM that may help to understand the triggering of this hyperthermal event; (ii) a moister climate associated with a stronger seasonality during the early PETM.

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A new terrestrial vertebrate site just after the Paleocene–Eocene boundary in the Mortemer Formation of Upper Normandy, France

Cited by 19 publications

References 15 publications

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

The Palaeocene/Eocene boundary section at Zumaia (Basque‐Cantabric Basin) revisited: new insights from high‐resolution magnetic susceptibility and carbon isotope chemostratigraphy on organic matter (δ¹³C_org)

Paleohydrological and paleoenvironmental changes recorded in terrestrial sediments of the Paleocene–Eocene boundary (Normandy, France)

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A new terrestrial vertebrate site just after the Paleocene–Eocene boundary in the Mortemer Formation of Upper Normandy, France

Cited by 19 publications

References 15 publications

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

Cycles of humid‐dry climate conditions around the P/E boundary: new stable isotope data from terrestrial organic matter in Vasterival section (NW France)

The Palaeocene/Eocene boundary section at Zumaia (Basque‐Cantabric Basin) revisited: new insights from high‐resolution magnetic susceptibility and carbon isotope chemostratigraphy on organic matter (δ13Corg)

Paleohydrological and paleoenvironmental changes recorded in terrestrial sediments of the Paleocene–Eocene boundary (Normandy, France)

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The Palaeocene/Eocene boundary section at Zumaia (Basque‐Cantabric Basin) revisited: new insights from high‐resolution magnetic susceptibility and carbon isotope chemostratigraphy on organic matter (δ¹³C_org)