Results 11 to 20 of about 1,827,079 (176)

Middle Aptian Orbitolinid limestones in Belgrade (Serbia): microfacies and depositional environment [PDF]

open access: yesGeologia Croatica, 2023
Lower Cretaceous (Aptian) shallow-marine limestones with intercalated polymictic conglomerates were investigated with respect to their biostratigraphic age and their microfacies. They are the younger part of the generally carbonate-siliciclastic Lower Cretaceous deep-water (max. few hundred metres) turbiditic sequences (“Paraflysch”) of the so-called
Đorđević, Bojana   +4 more
openaire   +3 more sources

Climate variability and ocean fertility during the Aptian Stage [PDF]

open access: yesClimate of the Past, 2015
Several studies have been conducted to reconstruct temperature variations across the Aptian Stage, particularly during early Aptian Oceanic Anoxic Event (OAE) 1a.
C. Bottini   +5 more
doaj   +3 more sources

Mid Cretaceous fossil forests of Alexander Island, Antarctica [PDF]

open access: yes, 2003
Spectacular fossil trees and shrubs are preserved within fossil soils in their original growth positions in mid Cretaceous rocks on Alexander Island, Antarctic Peninsula.
Howe, Jodie
core   +7 more sources

Sedimentary record of the “Austrian” tectonic pulse around the Aptian–Albian boundary in SE France, and abroad

open access: yesComptes Rendus. Géoscience, 2022
A tectonically-controlled forced regression occurred on the western margin of the French subalpine basin around the Aptian–Albian boundary. It nearly emptied the western part of the Vocontian Trough during the early and middle Albian.
Ferry, Serge   +2 more
doaj   +1 more source

Ornithischian dinosaurs in Southeast Asia: a review with palaeobiogeographic implications [PDF]

open access: yesFossil Record, 2023
Ornithischian dinosaurs have been discovered in Thailand, Laos, and Malaysia. These bird-hipped herbivores remain relatively rare by comparison with saurischian dinosaurs.
Sita Manitkoon   +4 more
doaj   +3 more sources

Mid-Cretaceous paleoenvironmental changes in the western Tethys [PDF]

open access: yesClimate of the Past, 2018
We present a continuous record of surface water temperature and fertility variations through the latest Barremian–Cenomanian interval (ca. 27 Myr) based on calcareous nannofossil abundances from the western Tethys.
C. Bottini, E. Erba
doaj   +1 more source

Palynology of Early Cretaceous (Barremian to Aptian) hydrocarbon (methane) seep carbonates and associated mudstones, Wollaston Forland, Northeast Greenland [PDF]

open access: yes, 2022
Palynostratigraphic and palynofacies analysis have been performed on hydrocarbon seep carbonate, carbonate nodule and mudstone samples from the Early Cretaceous Kuhnpasset Beds in the Kuhnpasset area of Wollaston Forland, Northeast Greenland.
Morten Smelror   +11 more
core   +1 more source

Migration Routes of the Aptian to Turonian Ostracod Assemblages from North Africa and the Middle East [PDF]

open access: yesPaleontology Journal, 2014
Quantitative paleobiogeography is a powerful tool for detecting the migration routes of microfossils. This is factual and applicable when we select appropriate analyses for proper problems in the following manner. The quantitative study of 43 selected ostracod species (total of 136 species) from 11 countries of North Africa and the Middle East led to ...
Ashraf M. T. Elewa, Omar Mohamed
openaire   +1 more source

Taxonomic diversity dynamics of early cretaceous brachiopods and gastropods in the Azerbaijanian domains of the Lesser Caucasus (Neo-Tethys Ocean) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2014
Palaeontological data available from the Azerbaijanian domains (Somkhit-Agdam, Sevan-Karabakh, and Miskhan-Kafan tectonic zones) of the Lesser Caucasus permit reconstruction of the regional taxonomic diversity dynamics of two groups of Early ...
Ruban Dmitry A.
doaj   +1 more source

The record of the early Toarcian and early Aptian oceanic anoxic events in the Apenninic Carbonate Platform (Southern Italy) [PDF]

open access: yes, 2011
About one third of the carbon dioxide released mainly from burning of fossil fuels is absorbed into the oceans where it reacts to form carbonic acid.
Trecalli, Alberto
core   +1 more source

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