Results 121 to 130 of about 7,296 (255)

DONNÉES NOUVELLES SUR LA STRATIGRAPHIE ET LA MICROPALÉONTOLOGIE DES SÉRIES CARBONATÉES DE TALUS ET DE BASSIN DU CRÉTACÉ INFÉRIEUR DU GARGANO (ITALIE MÉRIDIONALE)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2020
The stratigraphic revislon of the Iower Cretaceous successions from the Gargano peninsula provides new lithostratigraphic data ; two formations could be distinguished: the Vico del Gargano Limestones and the Mattinata Limestones corresponding to basin ...
ELENA LUPERTO SINNI, JEAN-PIERRE MASSE
doaj  

Impact of global cooling on Early Cretaceous high pCO2 world during the Weissert Event. [PDF]

open access: yesNat Commun, 2021
Cavalheiro L   +14 more
europepmc   +1 more source

Iranella inopinata Gollestaneh 1965, a puzzling dasycladalean alga from the Lower Cretaceous shallow carbonate shelf deposits of the Zagros fold-thrust belt, SW Iran [PDF]

open access: yes, 2018
Iranella inopinata gen. and sp. nov. was first described in the unpublished thesis of Gollestaneh (1965), as an incertae sedis from the Lower Cretaceous carbonate rocks of the Zagros fold-thrust belt.
Conrad, Marc   +2 more
core  

Climatic and environmental dynamics during the Valanginian carbon isotope event

open access: yes, 2012
Das Valangin (~ 144,5-133,9 Mio., Unterkreide) zeichnet sich durch eine positive Kohlenstoffisotopenexkursion (CIE) aus, die auf eine Störung im Kohlenstoffkreislauf hindeutet. CIEs sind für zahlreiche Abschnitte der Kreide bekannt. Im Vergleich zu späteren CIEs lassen sich für das Valangin keine erhöhten Akkumulationen von organischem Material im ...
openaire   +2 more sources

Altered carbon cycling and trace-metal enrichment during the late Valanginian and early Hauterivian [PDF]

open access: yes, 2018
.: Carbonates of Valanginian age deposited in the Tethys and Atlantic Oceans show a distinct positive δ13C excursion (Δ δ13C = 1.5‰-2‰) in sections of the neritic, hemipelagic, and pelagic environment.
Föllmi, Karl   +3 more
core  

Paleogeography of the West Siberian sedimentation basin in the Early Cretaceous era [PDF]

open access: yesНефтегазовая геология: Теория и практика
Based on the integration of geological and geophysical information, the facies and sedimentation environments of the Early Cretaceous terrigenous strata of Western Siberia were determined.
Shimanskiy V.V.   +9 more
doaj  

Biostratigraphy, sedimentology and sequence stratigraphy of the latest Hauterivian - Early Barremian drowning episode of the Northern Tethyan margin (Altmann Member, Helvetic nappes, Switzerland) [PDF]

open access: yes, 2018
.: During the Early Cretaceous, major palaeoceanographic changes are mirrored on the northern Tethyan carbonate platform by changes in the carbonate factory and by platform drowning.
Bodin, Stéphane   +4 more
core  

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