Results 31 to 40 of about 10,069 (268)

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

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

“Upper Jurassic” sediments of South Africa [PDF]

open access: yesNature, 1976
MARINE sedimentary rocks exposed near Knysna in the Cape Province of South Africa were assigned to the Upper Jurassic on the basis of a fragment of an ammonoid and seven previously undescribed species of ostracod1. A more thorough examination of the microfossils in these rocks indicates that this assignment was erroneous and that the beds are of Early ...
R. P. STAPLETON, E. M. BEER
openaire   +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

Tetradactyl footprints of an unknown affinity theropod dinosaur from the Upper Jurassic of Morocco. [PDF]

open access: yes, 2011
BACKGROUND: New tetradactyl theropod footprints from Upper Jurassic (Oxfordian-Kimmeridgian) have been found in the Iouaridène syncline (Morocco). The tracksites are at several layers in the intermediate lacustrine unit of Iouaridène Formation.
Jaouad Nouri   +8 more
core   +1 more source

Geology of the Monte Banchetta – Punta Rognosa area (Troncea valley, Western Alps)

open access: yesJournal of Maps, 2021
The map ‘Geology of the Monte Banchetta – Punta Rognosa area (Troncea valley, Western Alps)’ details the lithostratigraphy and structural setting of a key sector in the Alpine chain, characterized by close associations of continental and oceanic ...
Alberto Corno   +3 more
doaj   +1 more source

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

New Data on the Poorly Known Jurassic Record of the Turtle Hylaeochelys (Thalassochelydia), Based on New Finds from Portugal

open access: yesDiversity, 2023
Hylaeochelys is the only thalassochelydian turtle identified in the Cretaceous record. A single Lower Cretaceous species is known, Hylaeochelys belli, identified in United Kingdom and Germany and defined in the first half of the 19th century. Less than a
Adán Pérez-García   +2 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

Stegosaur tracks from the Upper Jurassic of Portugal: new occurrences and perspectives

open access: yesCiências da Terra - Earth Sciences Journal, 2022
The record of Late Jurassic stegosaur tracks from the Lourinhã Formation (Kimmeridgian-Tithonian) is here revised. Thirty-eight dinosaur tracks, preserved as natural infill casts, are here reported, and thirty-two of them are attributed to the ichnogenus Deltapodus.
Guillaume, Alexandre Renaud Daniel   +2 more
openaire   +2 more sources

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