Results 11 to 20 of about 8,079 (230)

Carbonate microfacies and transgressive‐regressive sequences of Oxfordian shallow‐water limestones (Korallenoolith, Lower Saxony Basin)

open access: yesThe Depositional Record
This study represents a detailed analysis of a stratigraphic section of Oxfordian (Late Jurassic) age with the aim to reconstruct the facies pattern and sequence‐stratigraphic evolution, followed by a discussion of the dominant controls on shallow marine
Deyan Zhang   +3 more
doaj   +2 more sources

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

open access: yesGeophysical Monograph Series, Page 191-228., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman   +2 more
wiley  

+1 more source

Habitat Availability, Jurassic and Cretaceous Origins of the Deep-Bodied Shark Morphotype and the Rise of Pelagic Sharks. [PDF]

open access: yesEcol Evol
We find support for a benthic origin of sharks, with four discrete transitions towards pelagic‐type morphology occurring during the Jurassic and Cretaceous. Increased habitat availability driven by biotic and abiotic environmental change may have driven shifts towards pelagic‐type morphology. These results may help explain discordance between molecular
Gayford JH   +5 more
europepmc   +2 more sources

Poroelasticity of the Callovo–Oxfordian Claystone [PDF]

open access: yesRock Mechanics and Rock Engineering, 2016
This work is devoted to an experimental investigation of the poroelastic behavior of the Callovo–Oxfordian claystone, a potential host rock for the deep underground repository of high-level radioactive waste in France. Drained, undrained, pore pressure loading and unjacketed tests were carried out in a specially designed isotropic compression cell to ...
Belmokhtar, Malik   +5 more
openaire   +1 more source

Trachyteuthis covacevichi n. sp., a Late Jurassic Palaeopacific coleoid cephalopod [PDF]

open access: yesFossil Record, 2008
A new early Oxfordian coleoid cephalopod, Trachyteuthis covacevichi n. sp., is described from northern Chile. It represents the first Late Jurassic Palaeopacific vampyropod and thus considerably extends the palaeogeographic distribution of trachyteuthids.
D. Fuchs, H.-P. Schultze
doaj   +3 more sources

New findings of rhyncholites in the Middle and Upper Jurassic of Crimea

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
Until now thefindingsof rhyncholites from the Jurassic marine sediments of Crimea were very scarce. In both the Oxfordian and Kimmeridgian of Crimea, rhyncholites were never found despite the fact that in Western and Central Europe they are very numerous
A. A. Mironenko, V. N. Komarov
doaj   +1 more source

Environmental and climatic proxies for the Cañadón Asfalto and Neuquén basins (Patagonia, Argentina): review of middle to upper jurassic continental and near coastal sequences [PDF]

open access: yes, 2015
In this review, we include several proxies (sedimentology, palynology, invertebrates) from the Cañadón Asfalto and Neuquén basins, to infer the environments and regional climatic context during the Middle to Late Jurassic of Patagonia.
Cabaleri, Nora Graciela   +6 more
core   +1 more source

About the contact pads of Gryphaea Dilatata Sowerby (Dysodonta, Bivalvia) from the Oxfordian deposits of the Nizhnie Mnevniki (Moscow)

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
The epibiosis’s features of the Oxfordian oysters Gryphaea dilatata Sowerby from Nizhnie MnevniH (Moscow) are first studied. The oysters used the attachment as a way to root to the substrate.
A. P. Vasina   +2 more
doaj   +1 more source

Coupled thermo-hydro-mechanical behaviour of a deep clay [PDF]

open access: yes, 2019
An experimental study on Ypresian clays –one of the potential deep formations in Belgium for the geological disposal of heat-emitting radioactive waste– was undertaken to systematically study its thermal properties and coupled hydro-mechanical response ...
Romero Morales, Enrique Edgar   +2 more
core   +1 more source

Origin and Characteristics of the Crude Oils and Condensates in the Callovian-Oxfordian Carbonate Reservoirs of the Amu Darya Right Bank Block, Turkmenistan

open access: yesLithosphere, 2022
The Amu Darya Right Bank Block is located northeast of the Amu Darya basin, a large petroliferous sedimentary basin, with abundant natural gas resources in carbonate rocks under the ultra-thick gypsum-salt layer.
Yunpeng Shan   +8 more
doaj   +1 more source

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