Výsledky vyhledávání - "Samuel Mailliot"

Revisiting Early Jurassic Biscutaceae: Similiscutum giganteum sp. nov

Autor: Samuel Mailliot, Emanuela Mattioli, Micaela Chaumeil Rodríguez, Bernard Pittet

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

A large, broadly elliptical coccolith of the genus Similiscutum (Biscutaceae) was observed in sediments dated from the Lower Jurassic (upper Pliensbachian to Toarcian) coming from different localities of western Tethys, namely Portugal (Lusitanian Ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fba8ec91e347816c43f474447cbc4680
https://jm.copernicus.org/articles/42/1/2023/

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Base of the Toarcian Stage of the Lower Jurassic defined by the Global Boundary Stratotype Section and Point (GSSP) at the Peniche section (Portugal)

Publikováno v: Episodes Journal of International Geoscience
Episodes Journal of International Geoscience, 2016, ⟨10.18814/epiiugs/2016/v39i3/99741⟩
Episodes Journal of International Geoscience, Seoul National University, 2016, ⟨10.18814/epiiugs/2016/v39i3/99741⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname

The Global Stratotype Section and Point (GSSP) for the base of Toarcian Stage, Lower Jurassic, is placed at the base of micritic limestone bed 15e at Ponta do Trovão (Peniche, Lusitanian Basin, Portugal; coordinates: 39°22'15''N, 9°23'07''W), 80km

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b3375f1301e9cccb09d1988f53bcb2e
https://hal.science/hal-01403277

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Dramatic decrease of pelagic carbonate production by nannoplankton across the Early Toarcian anoxic event (T-OAE)

Autor: Samuel Mailliot, Emanuela Mattioli, Bernard Pittet, Laurent Petitpierre

Publikováno v: Global and Planetary Change. 65:134-145

In this account we present estimates of nannofossil fluxes in four sections and one borehole all belonging to the Early Jurassic western Tethys. This study aims to map the distribution of pelagic carbonate production across the Early Toarcian anoxic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::176884dd4b46818d0e3f5ccd22f66dd8
https://doi.org/10.1016/j.gloplacha.2008.10.018

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Calcareous nannoplankton changes across the early Toarcian oceanic anoxic event in the western Tethys

Autor: Guillaume Suan, Samuel Mailliot, Emanuela Mattioli, Bernard Pittet

Publikováno v: Paleoceanography. 23

Calcareous nannoplankton were profoundly affected by environmental perturbations coincident with the early Toarcian oceanic anoxic event (T-OAE). We quantify the abundance of nannofossils across the T-OAE at three locations in Western Europe, where t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14efde6c20fa4c111c55d34bfa55cd70
https://doi.org/10.1029/2007pa001435

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Evidence for major environmental perturbation prior to and during the Toarcian (Early Jurassic) oceanic anoxic event from the Lusitanian Basin, Portugal

Autor: Christophe Lécuyer, Guillaume Suan, Samuel Mailliot, Bernard Pittet, Emanuela Mattioli

Publikováno v: Paleoceanography. 23

The timing and causal relationships between the pronounced negative C isotope excursion and paleoenvironmental perturbations associated with the Toarcian oceanic anoxic event (Early Jurassic) remain unclear, particularly because biotic crises and car

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f91a02b38cc44fc21805f8edc4de7900
https://doi.org/10.1029/2007pa001459

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Duration of the Early Toarcian carbon isotope excursion deduced from spectral analysis: Consequence for its possible causes

Autor: Ivan Bour, Luís V. Duarte, Guillaume Suan, Samuel Mailliot, Bernard Pittet, Emanuela Mattioli

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Annual Review of Earth and Planetary Sciences
Annual Review of Earth and Planetary Sciences, Annual Reviews, 2008, 267, pp.666-679

The marked 3-8[per mille sign] negative carbon isotope excursion associated with the Early Toarcian oceanic anoxic event (OAE; ~ 183 myr ago) in the Early Jurassic period is thought to represent one of the most important perturbations of the C-cycle

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddc57dd5d03e253f0a989ac27c459b88

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The Early Toarcian anoxia, a synchronous event in the Western Tethys? An approach by quantitative biochronology (Unitary Associations), applied on calcareous nannofossils

Autor: Bernard Pittet, Emanuela Mattioli, Samuel Mailliot, Jean Guex

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2006, 240, pp.562-586. ⟨10.1016/j.palaeo.2006.02.016⟩

International audience; During the Early Toarcian, major paleoenvironnemental and paleoceanographical changes occurred, leading to an oceanic anoxic event (OAE) and to a perturbation of the carbon isotope cycle. Although the standard biochronology of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b39e8cd85437516f45592658ba5edef
https://hal.archives-ouvertes.fr/hal-00144732

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