Results 31 to 40 of about 1,541,264 (242)

Jurassic sedimentary evolution of southern Junggar Basin: Implication for palaeoclimate changes in northern Xinjiang Uygur Autonomous Region, China

open access: yesJournal of Palaeogeography, 2014
Junggar Basin, located in northern Xinjiang, presents continuous and multikilometer-thick strata of the Jurassic deposits. The Jurassic was entirely terrestrial fluvial and lacustrine deltaic sedimentation.
Shun-Li Li   +3 more
doaj   +1 more source

Petroleum system analysis of the Lower Jurassic-Upper Cretaceous source rocks and Miocene reservoirs in the NE of Iraq [PDF]

open access: yes, 2017
The Carbonat/evaporit cycles in the North of Iraq for the LOwer Jurassic-Upper Cretaceous time interval were studied to investigate their source rock intervals sa well as residual bitumen and crud oil in the Miocene ...
Mohammed R, Luma Jassim
core   +1 more source

Protolith age of the Altar and Carnero complexes and latest Cretaceous–Miocene deformation in the Caborca–Altar region of northwestern Sonora, Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2019
In the Caborca–Altar area of northwest Sonora, variably deformed and metamorphosed sedimentary and volcanic rocks crop out in a northwest-southeast–trending belt (El Batamote belt) at least 70 km long.
Carl E. Jacobson   +5 more
doaj   +1 more source

The first Late Jurassic elcanid orthopteran from Poland and its palaeoecological implications [PDF]

open access: yesActa Palaeontologica Polonica
The elcanid ?Panorpidium polonicum Michalska sp. nov. is described based on a single tegmen from the Tithonian (Upper Jurassic) Kcynia Formation at the Owadów-Brzezinki quarry, central Poland.
Monika Michalska, Błażej Błażejowski
doaj   +1 more source

Geochemical features of the organic matter from Jurassic sediments of the Nadym‑Taz interfluve

open access: yesGeoresursy, 2020
This paper deals with the evaluation of oil-generation potential derived from the geochemical data on deep-buried Jurassic sedimentary rocks of the Nadym-Taz interfluve being part of the West Siberian petroleum basin (PB).
Lyubov S. Borisova   +2 more
doaj   +1 more source

Stratigraphy, facies and geodynamic settings of Jurassic formations in the Bükk Mountains, North Hungary: its relations with the other areas of the Neotethyan realm. [PDF]

open access: yes, 2013
Jurassic mélange complexes related to the subduction of the Neotethys Ocean occur in the Bükk Mountains, North Hungary. This paper characterizes the sedimentary sequence of basin and slope facies that occur in the southwestern part of the Bükk ...
JÁNOS HAAS   +9 more
core   +1 more source

Environmental distribution of Bathonian (Middle Jurassic) neoselachians in southern England [PDF]

open access: yes, 2004
Within the Bathonian (Middle Jurassic) a wide range of depositional environments were present across Britain. Within this dominantly carbonate shelf setting, there is a general palaeoenvironmental transition from open marine shelf in the south of England,
Underwood, Charlie J., Ward, D.J.
core   +4 more sources

GEOCHEMICAL FEATURES AND FACTOR MODELS OF THE BAZHENOV FORMATION IN THE CENTRAL AND SOUTHEASTERN REGIONS OF THE WEST SIBERIAN PLATE

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2016
The paper considers geochemical features of the Bazhenov Formation in the context of its petroleum potential and formation conditions. The major processes that had an impact on lithomineralogical and geochemical characteristics of the rocks were revealed
E. A. Predtechenskaya, L. D. Malyushko
doaj   +1 more source

Jurassic provenances and their transition mechanism of the Delingha Sag in the eastern segment of northern margin of the Qaidam Basin, North Tibet

open access: yesGeosystems and Geoenvironment, 2022
The Delingha Sag that witnessed the Indosinian, Yanshanian and Himalayan orogenies since the Mesozoic, is a potential petroliferous Meso-Cenozoic sag located in the eastern segment of the northern margin of the Qaidam Basin in North Tibet.
Huaiwei Feng   +5 more
doaj   +1 more source

Certain Upper Jurassic Strata of England [PDF]

open access: yesQuarterly Journal of the Geological Society of London, 1913
B y combining the evidence of a number of sections in England and near Boulogne-sur-Mer I have succeeded in establishing a normal succession of zones in the Oxfordian, Kimmeridgian, and Portlandian rocks, using these terms according to the German and French classifications. Dispensing with A.
openaire   +1 more source

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