Results 51 to 60 of about 7,617 (206)

Umbria-Marche Basin, Central Italy: A Reference Section for the Aptian-Albian Interval at Low Latitudes

Scientific Drilling, 2012
Within the Cretaceous Period, the Aptian-Albian interval (125–99.6 Ma, Ogg et al., 2008) was a critical time on a global scale. This is evident from 1) changes in the nature of the ocean-climate system brought about by increased ocean crust production ...
Renato Paes de Almeida, Grasiane Luz Mathias, Jairo Savian, Liliane Janikian, Fabrizio Frontalini, Gerson Fauth, Carla Bucci, Giuseppe Bancalà, Luigi Jovane, Rodolfo Coccioni, Ricardo Ivan Ferreira da Trindade   +10 more
doaj   +1 more source

Atmospheric pCO₂ Reconstruction of Early Cretaceous Terrestrial Deposits in Texas and Oklahoma Using Pedogenic Carbonate and Occluded Organic Matter

Geosciences, 2022
Pedogenic carbonate samples collected from three Lower Cretaceous (Aptian–Albian) fossil localities in Texas and Oklahoma were analyzed to develop paleoatmospheric pCO2 estimates by measuring the stable carbon isotopes of pedogenic calcite and their co ...
Kate Andrzejewski, Neil Tabor, Dale Winkler, Timothy Myers   +3 more
doaj   +1 more source

Upper Aptian ammonites from Roussillon, southern France

Fossil Imprint, 2023
The present contribution describes a new rich ammonite material from the Aptian-type area, Vaucluse, France, made accessible by the expansion of the wine cellar of Domaine de Château-Blanc at Roussillon, located at ca. 8 km northwest of Apt. This temporary outcrop exposed a few meters of sandstones and sandy, glauconitic marls, characterising the fifth
openaire   +1 more source

RESULTS OF GEOCHEMICAL CONDITION MONITORING AT AN OIL FIELD IN THE CENTRAL PART OF WESTERN SIBERIA [PDF]

Proceedings on Engineering Sciences
The paper examines the results of long-term monitoring studies of the chemical composition of mineralized groundwater of the Aptian-Albian-Cenomanian aquifer complex at the Taylakovskoye oil field in Western Siberia.
Yulia I. Salnikova , Rimma N. Abdrashitova , Tatyana V. Semyonova , Tatyana V. Semyonova, Lyubov A. Kovyatkina   +4 more
doaj   +1 more source

Early-Late Cretaceous (Aptian-Cenomanian) Palynomorphs

, 1985
. Samples from 12 wells situated mainly in the northern part of the Cyrenaica Shelf of northeast Libya have yielded palynomorph assemblages of Aptian, Albian or Cenomanian aspect.
D. J. Batten, P. J. R. Uwins
core   +1 more source

Geochemistry of the CAU core (drilled 2015-2017): C and O isotopes, TOC and CaCO3 - Aptian - Betic Cordillera, Alicante, Spain

, 2020
A high-resolution carbonate C-isotope (δ13Ccarb) stratigraphy for the Aptian is presented for the Cau core from Alicante, Spain. The studied succession, lower to upper Aptian, embraces the record of the Early Aptian OAE 1a.
Weissert, Helmut J, Castro, Jose Manuel, Jarvis, Ian, Aguado, Roque, Martínez-Rodríguez, Rafael, de Gea, Ginés A, Pancost, Richard D, Ruiz-Ortiz, Pedro A, López-Rodríguez, Carmina, Reolid, Matías, Molina, José M, Quijano, María L, Nieto, Luis M, Skelton, Peter W   +13 more
core   +1 more source

The Deshayesitidae (Ammonoidea, Ancyloceratina) in the lower Aptian (Lower Cretaceous) of the Les Ferres Aptian Basin (southeastern France)

Carnets Geol.
In the present work, we study 335 specimens of Deshayesitidae (Ammonoidea) from the vicinity of the village of Les Ferres (SE France). The Deshayesitidae is the current key family for the ammonite biostratigraphy of the lower Aptian (Lower Cretaceous).
Stéphane Bersac, Didier Bert
openaire   +3 more sources

Correction to: Aptian–Albian shale oil unconventional system as registration of Cretaceous oceanic anoxic sub-events in the southern Tethys (Bir M’Cherga basin, Tunisia)

Journal of Petroleum Exploration and Production Technology, 2018
In the original publication, article title has been incorrectly published as “Aptian–Albian oil shale unconventional system as registration of Cretaceous oceanic anoxic sub-events in the southern Tethys (Bir M’Cherga basin, Tunisia)” instead of Aptian ...
Rachida Talbi, Rached Lakhdar, Amor Smati, Reginal Spiller, Raymond Levey   +4 more
doaj   +1 more source

Enhancing paleoclimate reconstructions in the late Aptian North-Northeast Brazil using clay mineralogy

Evolving Earth
Paleoclimate changes are commonly analyzed on three distinct scales: small-scale (20–500 kyr), linked to Milankovitch cycles; medium-scale events (∼30 Myr), associated with sea-level changes and tectonic activity; and large-scale (∼300 Myr), related to ...
Victor Matheus Joaquim Salgado-Campos, Luiz Carlos Bertolino, Leonardo Borghi, Aristóteles de Moraes Rios-Netto, Bruno Cesar Araújo, Danielle Cardoso de Souza, Laís de Oliveira Ferreira, Fabia Emanuela Rafaloski Bobco, Jéssica de Souza Gabi Barcellos, Ismar de Souza Carvalho   +9 more
doaj   +1 more source

Barremian-Aptian dinoflagellate cyst assemblages

, 2006
Quantified organic-walled dinoflagellate cyst (dinocyst) assemblages are presented for two sedimentary successions deposited in neritic environments of the Tethys Ocean during the Barremian and Aptian in an attempt to reconcile established dinocyst ...
Gerald Roy Dickens (6960560), Leereveld, H, R A Henderson (6972890), Henk Brinkhuis (6963977), Henderson, R A, Brinkhuis, Henk, Dickens, Gerald Roy, Oosting, A M, A M Oosting (6972884), H Leereveld (6972887)   +9 more
core   +1 more source