Results 31 to 40 of about 23,270 (210)

Climate simulation of the latest Permian: Implications for mass extinction [PDF]

open access: yes, 2005
This report presents the results of climate modeling research which indicates that elevated levels of carbon dioxide in the atmosphere at the end of the Permian period led to climatic conditions inhospitable to both marine and terrestrial life.
Benton   +22 more
core   +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

THE STUDY OF LAKE ONEGO AND ITS DRAINAGE BASIN PALEOGEOGRAPHY USING A SET OF METHODS

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
The authors own and literary data on long-term paleogeographical research of Lake Onego and its drainage basin carried out using a set of methods are summarized in the article.
Lyudmila Filimonova, Nadezhda Lavrova
doaj   +1 more source

The Glacier Complexes of the Mountain Massifs of the North-West of Inner Asia and their Dynamics [PDF]

open access: yes, 2011
The subject of this paper is the glaciation of the mountain massifs Mongun-Taiga, Tavan-Boghd-Ola, Turgeni- Nuru, and Harhira-Nuru. The glaciation is represented mostly by small forms that sometimes form a single complex of domeshaped peaks ...
Chistyakov , Kirill V.   +3 more
core   +2 more sources

Identification of Erosional Terraces on Seamounts: Implications for Interisland Connectivity and Subsidence in the Galápagos Archipelago

open access: yesFrontiers in Earth Science, 2018
Shallow seamounts at ocean island hotspots and in other settings may record emergence histories in the form of submarine erosional terraces. Exposure histories are valuable for constraining paleo-elevations and sea levels in the absence of more ...
Darin M. Schwartz   +3 more
doaj   +1 more source

Astronomically paced changes in overturning circulation in the Western North Atlantic during the middle Eocene [PDF]

open access: yes, 2018
North Atlantic Deep Water (NADW) currently redistributes heat and salt between Earth’s ocean basins, and plays a vital role in the ocean-atmosphere CO2 exchange.
Bickert, Torsten   +9 more
core   +1 more source

PALEONTOLOGY AND PALEOGEOGRAPHY OF FORTY DIAGNOSTIC SOUTHERN TETHYAN CRETACEOUS-PALEOGENE GLOBIGERINID PLANKTIC FORAMINIFERA [PDF]

open access: yesActa Scientifica Malaysia
Forty planktic foraminiferal species were erected from ten localities in the Southern Tethys: Tunisia, Egypt, Angola, Tanzania, Iraq, Kuwait, UAE, Iran, Pakistan, and India.
Haidar Salim Anan
doaj   +1 more source

Evolutionary history and identification of conservation units in the giant otter, Pteronura brasiliensis. [PDF]

open access: yes, 2011
The giant otter, Pteronura brasiliensis, occupies a range including the major drainage basins of South America, yet the degree of structure that exists within and among populations inhabiting these drainages is unknown.
Ariani, C.   +19 more
core   +1 more source

The geology of carbonaceous deposits (Carboniferous) of the South Urals (Fedorovskaya sequence, Sukharysh syncline)

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2021
The geological structure of coal formations of the Sukharysh syncline, which is located in the Kopeysk-Bredy subzone of the Alapaevsk-Adamovka structural-formational zone, was studied.
A.V. Snachev
doaj   +1 more source

Environmental and climatic proxies for the Cañadón Asfalto and Neuquén basins (Patagonia, Argentina): review of middle to upper jurassic continental and near coastal sequences [PDF]

open access: yes, 2015
In this review, we include several proxies (sedimentology, palynology, invertebrates) from the Cañadón Asfalto and Neuquén basins, to infer the environments and regional climatic context during the Middle to Late Jurassic of Patagonia.
Cabaleri, Nora Graciela   +6 more
core   +1 more source

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