Results 1 to 10 of about 21,525 (306)

À propos d’un outil à retouches bifaciales du Paléolithique moyen trouvé dans le Bugey au Petit Abergement(commune de Haut-Valromey, Ain)

open access: yesRevue Archéologique de l’Est, 2021
In our region, it is remarkable to discover a flint tool with bifacial retouch, especially in an environmental context that has few Paleolithic remains. This piece, collected with no archaeological context, raises questions concerning its chrono-cultural
Marc Cartonnet, Guy PESENTI
doaj   +1 more source

Glaciation [PDF]

open access: yesThe Geographical Journal, 1902
n ...
openaire   +2 more sources

Late Glacial and Holocene Palaeolake History of the Última Esperanza Region of Southern Patagonia

open access: yesFrontiers in Earth Science, 2022
We undertook multi-proxy analyses on two sediment cores from Lago Pato, a small lake basin at 51°S topographically separated from Lago del Toro in Torres del Paine (TdP), to provide insights into glacier dynamics and lake-level change in the TdP and ...
Stephen J. Roberts   +15 more
doaj   +1 more source

Routes to global glaciation [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
Theory and observation suggest that Earth and Earth-like planets can undergo runaway low-latitude glaciation when changes in solar heating or in the carbon cycle exceed a critical threshold. Here, we use a simple dynamical-system representation of the ice–albedo feedback and the carbonate–silicate cycle to show that glaciation is also triggered when ...
Constantin W. Arnscheidt   +1 more
openaire   +4 more sources

Pleistocene glaciation of Fenland, England, and its implications for evolution of the region [PDF]

open access: yesRoyal Society Open Science, 2018
Detailed investigation of landforms and their underlying deposits on the eastern margin of Fenland, East Anglia, demonstrated that they represent a series of glaciofluvial delta-fan and related sediments.
P. L. Gibbard   +2 more
doaj   +1 more source

The Location and Styles of Ice-Free “Oases” during Neoproterozoic Glaciations with Evolutionary Implications

open access: yesGeosciences, 2012
Evidence based on molecular clocks, together with molecular evidence/biomarkers and putative body fossils, points to major evolutionary events prior to and during the intense Cryogenian and Ediacaran glaciations. The glaciations themselves were of global
Daniel Paul Le Heron
doaj   +1 more source

Influence of the 1988 earthquake on glacierization and relief of the Tsambagarav massif (Western Mongolia)

open access: yesЛëд и снег, 2022
Early documentation of the consequences of the Tsambagarav earthquake happened on July 23, 1988 (M = 6.4) compiled by Soviet and Mongolian specialists allowed the authors, using the example of Tsambagarav (Mongolian Altai), to assess the impact of the ...
A. R. Agatova   +5 more
doaj   +1 more source

Glaciations, Pre-Quaternary [PDF]

open access: yes, 2009
Description of lines of evidence used to establish the occurrence of an ancient glaciation.
Arnaud, E., Martini, I.P.
openaire   +2 more sources

Impact of Tectonic, Glacial and Contour Current Processes on the Late Cenozoic Sedimentary Development of the Southeast Greenland Margin

open access: yesGeosciences, 2019
To understand the geomorphological contrast between the northern and southern parts of the Southeast Greenland margin with its marked differences in sedimentary regime, bathymetric and seismic reflection, data have been compiled and analysed.
Katrien An Heirman   +2 more
doaj   +1 more source

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