Results 31 to 40 of about 203 (161)

Diamicton facies in the vicinity of Duhlata cave, Bosnek karst region, Southwestern Bulgaria

Review of the Bulgarian Geological Society, 2021
Karst caverns in the Upper Triassic dolostones of the Rusinovdel Formation are filled with allochthonous clastics (brecciaconglomerates with maximum boulder size) and locally with speleothems (flowstones). Deposition of the former (diamicton facies) by debris flows resulted from extreme flood events along the upper reaches of Struma river. The polymict
Athanas Chatalov, Dilyana Hristova
openaire   +1 more source

Sedimentological characteristics of debris flow Deposits within ice−cored moraine of Ebbabreen, central Spitsbergen

Polish Polar Research, 2015
The Ebbabreen ice−cored moraine area is covered with a sediment layer of up to 2.5 m thick, which mostly consists of massive diamicton. Due to undercutting by lateral streams, debris flow processes have been induced in marginal parts of this moraine.
Pleskot Krzysztof
doaj   +1 more source

A glaciotectonic landform in the Shyok valley, Trans-Himalayan Karakoram Range, India

Journal of Glaciology
This study reports and discusses the first case of glaciotectonic landforms in the Shyok valley of the Trans-Himalayan Karakoram Range, Ladakh, where a large decomposed granite megablock (8.2 km2) along with underlying diamicton is thrust over the ...
Abdul Qayoom Paul, Harish Bahuguna, Parveen Kumar   +2 more
doaj   +1 more source

Depositional dynamics in the El'gygytgyn Crater margin: implications for the 3.6 Ma old sediment archive [PDF]

Climate of the Past, 2012
The combination of permafrost history and dynamics, lake level changes and the tectonical framework is considered to play a crucial role for sediment delivery to El'gygytgyn Crater Lake, NE Russian Arctic.
G. Schwamborn, G. Fedorov, N. Ostanin, L. Schirrmeister, A. Andreev, the El'gygytgyn Scientific Party   +5 more
doaj   +1 more source

Ice-crevasse sedimentation in the eastern part of the Głubczyce Plateau (S Poland) during the final stage of the Drenthian Glaciation

Open Geosciences, 2020
Glacial sediments in the eastern part of the Głubczyce Plateau, at the Krowiarki site, were studied. Two units were distinguished within the sedimentary succession.
Salamon Tomasz
doaj   +1 more source

Timing of speleogenesis of Las Karmidas Cave (Mexico): first description of pseudokarst developed in ignimbrite

International Journal of Speleology, 2017
Las Karmidas Cave (Puebla State, Mexico) is an unusual type of pseudokarstic cavity generated by piping and erosive processes within the contact of a diamicton and an overlying Quaternary ignimbrite.
María del Pilar Aliaga-Campuzano, Rafael López-Martínez, Pablo Dávila-Harris, Ramón Espinasa-Pereña, Adriana Espino del Castillo, J.P. Bernal   +5 more
doaj   +1 more source

Distinguishing characteristics of Diamictons at the Margin of the Matanuska Glacier, Alaska [PDF]

Annals of Glaciology, 1981
The origins of diamictons deposited at the Matanuska Glacier are identified in stratigraphic sequences mainly by the presence or absence of a pebble fabric, internal structure, and variation in gravel-size clast distribution. These properties correlate with major differences in depositional mechanisms and source material.
openaire   +1 more source

A lee-side cavity fill diamicton under the Durance valley glacier: Insights from hoodoos of the Remollon Arch, Southern French Alps

Sedimentologika
Deep and narrow gullies dissecting reliefs of the Southern French Alps are filled with 10's to 100's meters thick accumulation of unsorted, boulder-rich muddy material (i.e., diamicton) left behind by glaciers that repeatedly covered the region during ...
Pierre Dietrich, Alexis Nutz
doaj   +1 more source

The rise and fall of a volcanic plateau: Landscape evolution at the fringes of the former Patagonian Ice Sheet, Meseta Chile Chico, central Patagonian Andes

Journal of Quaternary Science, EarlyView.
ABSTRACT Understanding Earth‐surface processes along the fringes of large ice sheets is integral to deciphering cold‐region environmental variability and anticipating slope instability under climate change. We investigate the Meseta Chile Chico, a volcanic plateau in the central Patagonian Andes, located at the eastern margin of the former Patagonian ...
Carolina Franco, Emma‐Louise Cooper, Antonio Maldonado, María Eugenia de Porras, Amalia Nuevo‐Delaunay, César Méndez, Varyl R. Thorndycraft, Alessa Geiger, Bernd Zolitschka   +8 more
wiley   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source