Results 21 to 30 of about 114,172 (349)

Burial and thermal history simulation of the subsurface Paleozoic source rocks in Faghur basin, north Western Desert, Egypt: Implication for hydrocarbon generation and expulsion history

open access: yesEgyptian Journal of Petroleum, 2019
Paleozoic Zeitoun, Desouqy and Dhiffah formations represent source rocks to hydrocarbon in Faghur basin, north Western Desert, Egypt. They are characterized by a sufficient amount of organic matter belonging to kerogen type III and mixed type II/III ...
Esam A. Abd El Gawad   +5 more
doaj   +1 more source

Upper Cretaceous-middle Eocene aged olistrostromal pelagic units in the Biga Peninsula (NW Anatolia); Balıkkaya formation

open access: yesBulletin of the Mineral Research and Exploration, 2021
Balıkkaya formation consists of olistostromal units with a burgundy coloured mudstone, siltstone and pelagic limestone matrix containing various sizes of UpperJurassic-Lower Cretaceous limestone (Bilecik Limestone) blocks and ...
İzver Özkar Öngen, Serdar Akgündüz
doaj   +1 more source

Dawn and dusk of Late Cretaceous basin inversion in central Europe [PDF]

open access: yesSolid Earth, 2021
Central and western Europe were affected by a compressional tectonic event in the Late Cretaceous, caused by the convergence of Iberia and Europe. Basement uplifts, inverted graben structures, and newly formed marginal troughs are the main expressions of
T. Voigt, J. Kley, S. Voigt
doaj   +1 more source

Tyrant dinosaur evolution tracks the rise and fall of Late Cretaceous oceans. [PDF]

open access: yesPLoS ONE, 2013
The Late Cretaceous (∼95-66 million years ago) western North American landmass of Laramidia displayed heightened non-marine vertebrate diversity and intracontinental regionalism relative to other latest Cretaceous Laurasian ecosystems.
Mark A Loewen   +4 more
doaj   +1 more source

Evidence of mysid swarm behaviour (Crustacea: Malacostraca) from the Cenomanian (Late Cretaceous) of Hakel, Lebanon

open access: yesNatural History Sciences, 2023
A mass mortality assemblage of mysid crustaceans is herein reported from the Cenomanian (Late Cretaceous) sublithographic limestone of Hakel (Lebanon).
Giovanni Pasini, Alessandro Garassino
doaj   +1 more source

The origin and early evolution of metatherian mammals: the Cretaceous record

open access: yesZooKeys, 2014
Metatherians, which comprise marsupials and their closest fossil relatives, were one of the most dominant clades of mammals during the Cretaceous and are the most diverse clade of living mammals after Placentalia.
Thomas E. Williamson   +2 more
doaj   +1 more source

Divergence rates of subviral pathogens of angiosperms abruptly decreased at the Cretaceous-Paleogene boundary [PDF]

open access: yesRethinking Ecology, 2019
Biogeographic distribution of infected plants and the continental drift theory allow a tentative time calibration of the phylogenetic tree of Pospiviroidae.
Piotr Bajdek
doaj   +3 more sources

Mesozoic and Cenozoic diktyogenese in the Lower Yangtze region

open access: yesShiyou shiyan dizhi, 2020
Three stages of metamorphic tectonic movements took place in the Lower Yangtze region due to the joint action of the Tethys and the Pacific plates from the Middle/Late Triassic to the Early/Middle Jurassic, the Late Jurassic to the Early Cretaceous, and ...
Daogui DING, Fengli LI
doaj   +1 more source

Neotethyan Ankara Melange, central Turkey: Formation by accretion of seamounts and supra-subduction zone ophiolites in an oceanic fore-arc setting

open access: yesJournal of Asian Earth Sciences: X, 2023
The Neotethyan Ankara Melange is a global reference for oceanic accretionary processes preserved in a collisional orogen. Here we show, based on eight representative outcrops around Ankara, that the melange encompasses stratigraphically coherent volcanic-
Alastair H.F. Robertson   +4 more
doaj   +1 more source

Valanginian to Barremian Benthic Foraminifera from ODP Site 766 (Leg 123, Indian Ocean) [PDF]

open access: yes, 1995
A Valanginian to Barremian bathyal foraminiferal assemblage (118 taxa belonging to 51 genera) is documented from ODP Site 766, drilled near the foot of the Exmouth Plateau off northwest Australia.
Holbourn, A.E.L., Kaminski, M.A.
core   +1 more source

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