Results 21 to 30 of about 7,296 (255)

Facial-paleogeographic reconstructions of the Valanginian-Hauterivian strata belonging to the Lower Cretaceous Gydan Peninsula and the western part of the Yenisei-Khatanga regional foredeep [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
Paleogeographic reconstructions were carried out, sedimentation models were determined, and facies-paleogeographic maps were constructed for the Valanginian-Hauterivian clinoform structures of the Lower Cretaceous of the Gydan Peninsula and the western ...
Taninskaya N.V.   +7 more
doaj   +1 more source

Lower Cretaceous heteromorph ammonites (Ancyloceratina) from Leše near Prevalje (North Karavanke Mts. NE Slovenia)

open access: yesGeologija, 2020
The paper deals with newly discovered Valanginian-Hauterivian fauna of heteromorphic ammonites (Ancyloceratina) from locality south of the village of Leše above the Meža River valley (North Karavanke Mountains).
Matija KRIŽNAR   +2 more
doaj   +1 more source

Rapid eruption of silicic magmas from the Paraná magmatic province (Brazil) did not trigger the Valanginian event

open access: yesGeology, 2020
The Valanginian Stage is marked by a period of global positive δ13C carbon cycle perturbation and biotic crises, which are collectively referred to as the Valanginian event (VE).
Brenda C. Rocha   +7 more
semanticscholar   +1 more source

Biostratigraphy and Facies Analysis of Upper Valanginian-Upper Hauterivian (Sarmord Formation) in Maten Anticline, Northern Iraq

open access: yesIraqi Geological Journal, 2021
Biostratigraphical and sedimentological study of the Sarmord Formation (Upper Valanginian - Upper Hauterivian) at the southern limb of Maten anticline is conducted within a well-exposed section.
Mohammed Al-Abbasi   +2 more
doaj   +1 more source

Scleractinian corals from the Lower Cretaceous of the Alpstein area (Anthozoa; Vitznau Marl; lower Valanginian) and a preliminary comparison with contemporaneous coral assemblages

open access: yesSwiss Journal of Palaeontology, 2022
From the Vitznau Marl (lower Valanginian) at the locality Wart in northeastern Switzerland (Alpstein area), 18 species from 17 genera and 13 families are described, including the genera Actinaraea, Actinastrea, Adelocoenia, Aplosmilia, Axosmilia ...
Rosemarie Christine Baron-Szabo   +2 more
doaj   +1 more source

A Lower Valanginian coral fauna from the South Iberian Palaeomargin (Internal Prebetic, SE Spain)

open access: yes, 2021
From the Lower Valanginian of the Sierra de Cazorla (Internal Prebetic, SE Spain), a coral fauna is taxonomically described. The fauna encompasses 51 species in 29 genera. One genus and three species are described as new.
H. Löser   +3 more
semanticscholar   +1 more source

New dasycladales and microbiota from the lowermost Valanginian of the Mirdita zone [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2005
A rich diversified algal microbiota is described from the lowermost Valanginian limestone re­worked in the Upper Cretaceous elastics of the Metohija Cretaceous Unit (Mirdita Zone). Two new dasycladalean taxa are introduced: Zujovicella nov. gen.
Radoičić Rajka
doaj   +1 more source

Results of Water Inflow Elimination in Wells Draining Gas Сondestate Deposits

open access: yesНаука. Инновации. Технологии, 2022
Introduction. The difficult geological, physical and technological conditions for the development of gas condensate fields in the Far North lead to the fact that they are prematurely flooded with formation waters.
E. Vaganov   +5 more
doaj   +1 more source

Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights.

open access: yesActa Palaeobotanica, 2019
The morphology of the adaxial structures of cones belonging to Palissya Endlicher 1847 emend. nov. are reinterpreted based on exquisitely preserved permineralised material from the Lower Cretaceous of Queensland.
GARY A. PATTEMORE, ANDREW C. ROZEFELDS
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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