Results 41 to 50 of about 60,372 (190)

Reflux stratabound dolostone and hydrothermal volcanism- associated dolostone: a two-stage dolomitization model (Jurassic, Lebanon) [PDF]

open access: yes, 2004
The Kesrouane Formation, which is characterized by pervasive dolomitization, has a stratigraphic thickness that exceeds 1000 m. It is part of a broad carbonate platform deposited in the Levant region and represents 60% of the Lebanese Jurassic rocks. Two
Nader, F.H.   +3 more
core   +1 more source

Morphological variations and geographic distribution of the rare Middle Jurassic ammonite Oecoptychius refractus

open access: yesActa Palaeontologica Polonica, 2023
The rare Middle Jurassic ammonite Oecoptychius refractus is revisited based on material collected in southern Poland (Ogrodzieniec quarry) and France (St.-Laon near Loudun, western France). Based on available data and an evaluation of the literature, O.
SREEPAT JAIN   +3 more
doaj   +1 more source

Ophiolite association of Cape Fiolent (western part of the Mountainous Crimea) – the upper age constraint according to the U-Pb isotope dating of plagiorhyolites (Monakh Cliff)

open access: yesЗаписки Горного института, 2022
The article presents the results of U-Pb isotope dating (SHRIMP-II, VSEGEI, Saint Petersburg) of zircon crystals extracted from plagiorhyolites of the Monakh Cliff in the area of Cape Fiolent in the western part of the Mountainous Crimea (southern suburb
Nikolay B. Kuznetsov   +3 more
doaj   +1 more source

Dinosaur Bones from the Maestrazgo UNESCO Global Geopark (Teruel, Spain) [PDF]

open access: yesGeoconservation Research, 2021
The current territory of the Maestrazgo UNESCO Global Geopark has provided fossils that pioneered dinosaur research in Spain. The first Spanish dinosaur, Aragosaurus ischiaticus (published in 1987), five other new genera of dinosaurs and six species were
Luis Alcalá, Rafael Royo-Torres
doaj   +1 more source

Seismic and sequence stratigraphy of Late Jurassic in Nasiriyah oil-field [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
The study scope has focused on the Late Jurassic Group: the three genetically related Najmah, Gotnia, and Sulaiy formations beneath an area of more than 40000 Km2 capitalizing on huge integrated 3-D, 2-D seismic and well data compiled with competent ...
Sabah Shejiri
doaj   +1 more source

Source-reservoir rock assemblages and hydrocarbon accumulation models in the Middle-Lower Jurassic of eastern Sichuan Basin, China

open access: yesFrontiers in Earth Science, 2023
The eastern Sichuan Basin in China holds vast potential for oil and gas exploration in the Lower-Middle Jurassic strata. However, the geological characteristics and hydrocarbon accumulation patterns of this region remain largely unclear.
Rong Bai   +14 more
doaj   +1 more source

Dinosaur footprints from the Duntulm Formation (Bathonian, Jurassic) of the Isle of Skye [PDF]

open access: yes, 2004
The first in situ dinosaur tracks from Scotland were discovered at the top of the Duntulm Formation (Bathonian, Jurassic) near to Staffin in northeastern Skye.
Booth, P.   +3 more
core   +1 more source

New Early Jurassic thylacocephalan assemblage from the Western Carpathians in Slovakia [PDF]

open access: yesActa Palaeontologica Polonica
Thylacocephalans (Euarthropoda: Pancrustacea) are extinct marine pancrustaceans characterised by a folded shield, with fossils known from the Upper Ordovician to the Upper Cretaceous, reaching a diversity peak in the Triassic.
Alexis Gerbe   +2 more
doaj   +1 more source

Sieve-type normal pore canals in Jurassic ostracods: A review with description of a new genus [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Sieve-type normal pore canals (StPC) occur commonly in living and fossil cytheroid ostracods but their biological function(s) and evolutionary history are poorly known. The new genus Minyocythere and its four species: Minyocythere macroporosa sp. nov., M.
Alan R. Lord   +2 more
doaj   +1 more source

Geochemical characteristics of solid bitumen in the Jurassic Sangonghe Formation in the central Junggar Basin and its implications for hydrocarbon accumulation process

open access: yesShiyou shiyan dizhi, 2021
The ubiquitously distributed solid bitumen in the Jurassic Sangonghe Formation reservoir in the central Junggar Basin recorded the important information of hydrocarbon accumulation.
Hui ZHANG   +5 more
doaj   +1 more source

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