Results 1 to 10 of about 1,369 (144)

Astronomical tuning of the Aptian stage and its implications for age recalibrations and paleoclimatic events [PDF]

open access: yesNature Communications, 2022
The Early Cretaceous Aptian stage represents an interval of major dramatic climate changes, but there is no consensus on its lower boundary age. Here, the authors present an astro-chronological framework that offers new age constraints on the onset and ...
C. G. Leandro   +12 more
doaj   +2 more sources

A novel chronostratigraphic framework for the Aptian–Albian paleoclimate events [PDF]

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   +2 more sources

The Aptian Marls of La Tuilière (Luberon UNESCO Global Geopark, France), a Historical Stratotype [PDF]

open access: yesGeoconservation Research, 2021
The historical stratotype of the Aptian Stage (Cretaceous) was defined in the Luberon UNESCO global geopark in the middle of the 19th century. Due to excessive urbanization launched in the early sixties, the best outcropping conditions are those found at
Stephane Legal, Pauline Coster
doaj   +1 more source

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

Assessment of prospects for petroleum bearing Aptian-Albian-Cenomanian strata of the Yamal peninsula - north of Western Siberia, on the basis of 2D seismic survey [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2022
The article presents a brief description of the geological structure and petroleum potential of the Aptian-Albian-Cenomanian strata. On the basis of 2D seismic exploration as part of the Aptian and Albian-Cenomanian levels, new promising objects were ...
Smirnov O.A., Borodkin V.N.
doaj   +1 more source

Questioning carbonate facies model definition with reference to the Lower Cretaceous Urgonian platform (SE France Basin)

open access: yesBSGF - Earth Sciences Bulletin, 2023
Designing carbonate facies models requires the integration, correlation and conceptual interpretation of multiple geological data sets. Potential significant errors are sourced from uncertain stratigraphic correlations, speculative palaeoecological ...
Michel Julien   +11 more
doaj   +1 more source

Biogenic structures in test of large benthic foraminifers (Orbitolina): Example from Aptian-Albian sediments of SW Neo-Tethys Ocean, Zagros, SW Iran [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2018
Introduction Study of carbonate sediments of the Dariyan Formation (Aptian-Albian) in northwest of Shiraz releases different types of biogenic structures in forms of encrustation and drilling in hard substrates. Generally biogenic structures are referred
Seyed Mohammad Ali Moosavizadeh   +1 more
doaj   +1 more source

Aptian–Albian deposits of the Ait Ourir basin (High Atlas, Morocco): New additional data on their paleoenvironment, sedimentology, and palaeogeography

open access: yesOpen Geosciences, 2020
This sedimentological and palaeontological analysis of the Aptian–Albian sedimentary succession of the Ait Ourir basin in the High Atlas Mountains of Marrakesh in Morocco provides new data from a previously poorly understood basin.
Hadach Fatiha   +3 more
doaj   +1 more source

Climate variability and ocean fertility during the Aptian Stage [PDF]

open access: yesClimate of the Past, 2015
Several studies have been conducted to reconstruct temperature variations across the Aptian Stage, particularly during early Aptian Oceanic Anoxic Event (OAE) 1a.
C. Bottini   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy