Results 11 to 20 of about 7,015 (163)

A novel chronostratigraphic framework for the Aptian–Albian paleoclimate events

open access: yesScientific Reports
The Aptian–Albian interval was marked by paleoclimatic changes encompassing volcanic events and monsoonal activity of which the precise timing were not well-defined.
João M. F. Ramos   +11 more
doaj   +4 more sources

The Aptian Stage: Back to fundamentals

open access: yesEpisodes, 2011
The original definitions of the Aptian, Albian and Urgonian stages by d'Orbigny (1840, 1842, 1847, respectively) on the basis of lithological and paleonto- logical criteria were sufficiently clear and should not have generated the misinterpretations and confusion that began at the end of the 19th century and continue today. The purpose of this paper is
Moullade, Michel   +2 more
openaire   +4 more sources

The Gargasian (Middle Aptian) of La Tuilière - St-Saturnin-lès-Apt (area of the Aptian historical stratotype, Vaucluse, SE France): geographic setting and outcrop correlation

open access: yesCarnets de Géologie, 2006
A stratonomic and micropaleontological analysis of the Aptian marls cropping out in the La Tuilière area near Saint-Saturnin-lès-Apt (Vaucluse, SE France), enabled us to reconstitute a continuous succession almost 120 m thick, that includes the upper ...
Moullade Michel   +3 more
doaj   +1 more source

APTIAN TO CAMPANIAN CALCAREOUS NANNOFOSSILS BIOSTRATIGRAPHY FROM THE BOTTACCIONE SECTION, GUBBIO, CENTRAL ITALY [PDF]

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2002
Late Aptian-Campanian biostratigraphic investigations performed on calcareous nannofossils provided a refined stratigraphic resolution  of the Scisti a Fucoidi and Scaglia Formations in the Bottaccione section (Umbria-Marche Basin, Central italy ...
FABRIZIO TREMOLADA
doaj   +2 more sources

Barremian–early Aptian charophyte biostratigraphy revisited [PDF]

open access: yesNewsletters on Stratigraphy, 2022
New Barremian-early Aptian charophyte biozonations are proposed here based on the charophyte succession in the Maestrat Basin (Iberian Chain, Spain). Biostratigraphic analysis distinguished two biozonations, European and Eurasian, which were compared to establish correlations.
Pérez Cano, Jordi   +2 more
openaire   +2 more sources

Palynology of Early Cretaceous (Barremian to Aptian) hydrocarbon (methane) seep carbonates and associated mudstones, Wollaston Forland, Northeast Greenland [PDF]

open access: yes, 2022
Palynostratigraphic and palynofacies analysis have been performed on hydrocarbon seep carbonate, carbonate nodule and mudstone samples from the Early Cretaceous Kuhnpasset Beds in the Kuhnpasset area of Wollaston Forland, Northeast Greenland.
Morten Smelror   +12 more
core   +1 more source

The Aptian evaporites of the South Atlantic: a climatic paradox? [PDF]

open access: yesClimate of the Past, 2012
Abstract. For a long time, evaporitic sequences have been interpreted as indicative of an arid climate. Such systematic interpretations led to the suggestion that the central segment of the South Atlantic (20°–0°) was characterized by an arid climate during the upper Aptian.
Chaboureau, Anne-Claire   +5 more
openaire   +5 more sources

Barremian - Aptian structural control in the central region offshore Uruguay

open access: yes, 2023
The structural framework that controls the aptian sedimentation in the distal-central region of Uruguay's offshore basins is identified and mapped in this work. In addition, its relevance from a petroleum perspective is studied.
Conti, Bruno   +2 more
core   +1 more source

Upper Aptian calcareous algae from Padurea Craiului (Northern Apuseni mountains, Romania)

open access: yesGeologia Croatica, 2008
A study of calcareous strata previously assigned to the Barremian-Early Aptian interval in the northwestern part of P?durea Craiului, (Apuseni Mountains), led to the identification of a micropaleontological association indicative of a Late Aptian age ...
Ioan I. Bucur   +2 more
doaj   +1 more source

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