Results 21 to 30 of about 1,369 (163)

UPPER CRETACEOUS-OLIGOCENE TETHYAN AGGLUTINATED BENTHIC FORAMINIFERAL SPECIES OF THE GENUS ARENOBULIMINA [PDF]

open access: yesGeological Behavior, 2023
The agglutinated test of the genus Arenobulimina has trochospirally enrolled, four or more chambers per whorl, aperture interiomarginal with a simple arch or loop, which has a comprising various species.
Haidar Salim Anan
doaj   +1 more source

Magnitude and frequency of debris and slush flows in the Khibiny mountain valleys, Kola Peninsula, NW Russia [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2019
Available results for five studied valleys of the Khibiny Mountains, Kola Peninsula, suggest that slush flows and, possibly for some valleys, typical debris flows with lower frequency, are a leading mechanism for downstream sediment delivery and valley ...
E. V. Garankina   +6 more
doaj   +1 more source

Lake sedimentation as an agent of postglacial transformation of interfluves and fluvial landscapes of the Borisoglebsk Upland, Central European Russia [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2019
Borisoglebsk Upland is considered an example of a secondary upland plain in the marginal zone of the last Middle Pleistocene glaciation. Moraine hills and kames were reworked by glaciofluvial processes and incised by small fluvial forms later.
E. V. Garankina   +5 more
doaj   +1 more source

Late Devonian (Frasnian–Famennian) palynomorphs from the Padeha and Bahram Formations of Shahzadeh Mohammad section, northwest of Kerman, Iran

open access: yesActa Palaeobotanica, 2022
A diverse and well-preserved microphytoplankton assemblage is reported from a measured section of Frasnian–Famennian (Upper Devonian) Padeha and Bahram Formations in Shahzadeh Mohammad area, northwestern Kerman, southeast Iran. The palynoflora assemblage
Roghayeh Rouzegar, Péter Ozsvárt
doaj   +1 more source

Reconstructing the Biogeographic History of the Genus Aurelia Lamarck, 1816 (Cnidaria, Scyphozoa), and Reassessing the Nonindigenous Status of A. solida and A. coerulea in the Mediterranean Sea

open access: yesDiversity, 2023
The genus Aurelia is one of the most extensively studied within the class Scyphozoa. However, much of the research was historically attributed to the species Aurelia aurita (Linnaeus, 1758) before the recognition of its taxonomic complexity.
Alfredo Fernández-Alías   +2 more
doaj   +1 more source

Evolution of lithofacies and paleogeography and hydrocarbon distribution worldwide (I)

open access: yesPetroleum Exploration and Development, 2019
By using a large amount of geological and geophysical data, the geological characteristics such as lithofacies and paleogeography of 4981 geological units at thirteen key geological periods or epoches since the Precambrian in the world have been figured ...
Guangya ZHANG   +11 more
doaj   +1 more source

Porcupines, Paleogeography, and Parallelism [PDF]

open access: yesEvolution, 1950
One of the vexing problems of geographic distribution is the explanation of why one suborder of rodents, the Hystricomorpha, is characteristic of South America, the southern parts of Eurasia, and Africa, but does not seem ever to have been present in North America until very recent times.
openaire   +1 more source

Reconstruction of the Dead (Grey) Dune evolution along the Curonian Spit, Southeastern Baltic [PDF]

open access: yesBulletin of the Geological Society of Finland, 2013
One of the unique places in Europe in both environmental and cultural terms is the Curonian Spit – a massive sandy barrier separating the Curonian Lagoon from the Baltic Sea. Straddling both the Lithuanian and the Russian parts, the spit is included into
N. Dobrotin   +4 more
doaj   +1 more source

Evolution of lithofacies and paleogeography and hydrocarbon distribution worldwide (II)

open access: yesPetroleum Exploration and Development, 2019
Based on the compilation and analysis of the lithofacies and paleogeography distribution maps at present and paleoplate locations during six key geological periods of the Mesozoic and Cenozoic, the lithofacies and paleogeography features and their ...
Guangya ZHANG   +11 more
doaj   +1 more source

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