Results 31 to 40 of about 1,867 (183)

Larger Foraminifera of Middle and Late Cenomanian (Biostrome Association), Southern Iraq

Iraqi Geological Journal, 2023
Searching one of the most important reservoirs of the Cretaceous in Iraq is the aim of many researchers. The studied sequences are in the Mishrif Formation in southern Iraq. The goal is to define fauna and design biostratigraphic zoning.
Abdelwahhab Al-Salihi, Yasamin Ibrahim
doaj   +1 more source

Stripping back the modern to reveal the Cenomanian–Turonian climate and temperature gradient underneath [PDF]

Climate of the Past, 2020
During past geological times, the Earth experienced several intervals of global warmth, but their driving factors remain equivocal. A careful appraisal of the main processes controlling past warm events is essential to inform future climates and ...
M. Laugié, Y. Donnadieu, J.-B. Ladant, J. A. M. Green, L. Bopp, L. Bopp, F. Raisson   +6 more
doaj   +1 more source

The first record of Scheenstia (Actinopterygii, Holostei) from the Late Cretaceous of Ukraine in the context of European occurrence of Mesozoic lepisosteiform fishes

Geo&Bio, 2019
Lepisosteiform fishes are represented in the fossil record of Europe from the Late Jurassic until the Miocene. Most of their remains were found in the western and central parts of the continent.
L. S. Kyselevych, O. M. Kovalchuk
doaj   +1 more source

Carbon Isotopic Signature and Organic Matter Composition of Cenomanian High-Latitude Paleosols of Southern Patagonia

Geosciences, 2021
The Cenomanian Mata Amarilla Formation (MAF) in southern Patagonia (~55° S paleolatitude, Austral-Magallanes Basin, Argentina) is composed mainly of stacked fluvial deposits with intercalated paleosols, which document Cenomanian environments at high ...
Augusto Nicolás Varela, María Sol Raigemborn, Patricio Emmanuel Santamarina, Sabrina Lizzoli, Thierry Adatte, Ulrich Heimhofer   +5 more
doaj   +1 more source

Improving the efficiency of gas fields development using an interlayer gas flow from Turonian to Cenomanian reservoirs

Известия высших учебных заведений: Нефть и газ, 2023
There is currently a significant depletion of Cenomanian gas reserves in Western Siberia, which have been the basis of Russian gas exports. This raises the challenge of developing reserves that could offset these volumes, such as hard-to-recover gas ...
A. Yu. Yushkov, O. N. Kardashina, A. D. Kazantsev, K. I. Peplin, D. Yu. Andriutsa   +4 more
doaj   +1 more source

BIOSTRATIGRAPHY AND DEPOSITIONAL ENVIRONMENT OF THE OIL SHALE DEPOSIT IN THE ABAKALIKI FOLD BELT, SOUTHEASTERN NIGERIA; pp. 99–125 [PDF]

Oil Shale, 2010
The oil shale deposit in the Abakaliki anticlinorium has not been demarcated. The present study focused on the age, correlation and depositional environ­ment of the oil shale using abundance, planktonic/benthonic ratio and species diversity of ...
O. A. EHINOLA
doaj   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Seismic Sequence Stratigraphy Applied to Reservoir Recognition and Evolution on Marine Carbonatic Ramp—Macaé Group (Albian to Cenomanian) of Campos Basin

Geological Journal, EarlyView.
A classic oil producing interval of the Campos Basin—Macaé Group is revisited through seismic stratigraphic analysis, providing a stratigraphic framework, characteristic depositional and relative time positioning for several complex structural settings.
Renata Alvarenga, Juliano Kuchle, Francyne Amarante, Garibaldi Armelenti, Claiton Marlon dos Santos Scherer, Luiz Fernando De Ros, Bruno de Souza Silva, Igor Marzano, Márcia Karam, Candy Shirley Rosa Contreras, João Claudio Conceição, José Luis Drummond Alves, Luiz Landau   +12 more
wiley   +1 more source

The Earliest Feathers from the Lower Cretaceous Dabeigou Formation of North Hebei: Implications for the Early Evolution of the Jehol Biota

Integrative Zoology, EarlyView.
This study reports two isolated feather fossils from the Lower Cretaceous Dabeigou Formation in northeastern China. Morphological analyses identified them as the earliest known feathered theropods (potentially including avian) in the Jehol Biota. This finding reveals a complex ecosystem at the dawn of the Jehol Biota, bridging the temporal and faunal ...
Qian Wu, Qian‐Nan Zhang, Dang‐Peng Xi   +2 more
wiley   +1 more source

Procurement of Senonian Flint for Bladelets Production at the Early PPNB Site of Nahal Zahal in the Northern Negev Established for the First Time Using Chemical Composition Analysis

Archaeometry, EarlyView.
ABSTRACT The hypotheses of Senonian flint to be a prime source of prehistoric “chalcedony” flint artefacts from the Negev Desert (Israel) was not investigated in detail thus far. By combining trace‐element profiling with statistical interpretation, ten flint items from Nahal Zahal, an Early Pre‐Pottery Neolithic B site in the northern Negev, were ...
Meir Finkel, Michal Birkenfeld, Talia Abulafia, Keren Weiss‐Sarusi, Olga Berlin, Yoav Ben Dor   +5 more
wiley   +1 more source