Buscar
Mostrando ítems 1-10 de 43
Exhumed subglacial landscape in Uruguay: Erosional landforms, depositional environments, and paleo-ice flow in the context of the late Paleozoic Gondwanan glaciation
(2018-07-01)
A well-exposed glacial surface sculpted on Precambrian crystalline basement rocks occurs below the glacial succession of the San Gregorio Formation on the eastern border of the Chaco-Parana Basin in Uruguay and was formed ...
Bimodal character of the Late Paleozoic glaciations in Argentina and bipolarity of climatic changes
(Elsevier Science, 2010-12)
The Upper Paleozoic sedimentary rock sequences of Argentina show an outstanding record of climatic fluctuations during this interval and the complexity and rapidity of the climatic changes. There were two distinct events ...
Sedimentary record of a fluctuating ice margin from the Pennsylvanian of western Gondwana: Parana Basin, southern Brazil
(Elsevier B.V., 2015-08-01)
The Parana Basin is a key locality in the context of the Late Paleozoic Ice Age (LPIA) because of its location east of the Andean proto-margin of Gondwana and west of contiguous interior basins today found in western Africa. ...
Tunnel-valley fills in the Paraná Basin and their implications for the extent of late Paleozoic glaciation in SW Gondwana
(2021-03-01)
Tunnel valleys are subglacial incisions formed mainly by meltwater erosion on soft sediment overridden by glaciers. Despite being common in the Pleistocene and Ordovician glacial record, where their fills constitute excellent ...
Sedimentology of the mid-Carboniferous fill of the Olta paleovalley, eastern Paganzo Basin, Argentina: Implications for glaciation and controls on diachronous deglaciation in western Gondwana during the late Paleozoic Ice Age
(Pergamon-Elsevier Science Ltd, 2018-07)
Both global and regional climate drivers contributed to glaciation during the late Paleozoic Ice Age (LPIA). However, the transition from icehouse to greenhouse conditions was asynchronous across Gondwana suggesting that, ...
Glacial paradoxes during the late Paleozoic ice age: Evaluating the equilibrium line altitude as a control on glaciation
(Elsevier Science, 2012-07)
The late Paleozoic ice age (LPIA) consists of multiple glaciations that waxed and waned across Gondwana during the Carboniferous and Permian. Three key intervals are evaluated using the concept of the equilibrium-line ...
Reassessment of mid-Carboniferous glacial extent in southwestern Gondwana (Rio Blanco Basin, Argentina) inferred from paleo-mass transport of diamictites
(Elsevier, 2013-04)
Late Paleozoic glacial diamictites occur in many localities in western Argentina, indicating that the region was strongly affected by glaciation during the mid-Carboniferous (late Serpukhovian–early Bashkirian). In most ...
Accelerated rates of foraminiferal origination and extinction during the Late Paleozoic Ice Age
(Centro de Ciências Matemáticas e da Natureza, Instituto de Geociências, Universidade Feder, 2006)
Glaciation During the Late Paleozoic Ice Age
(Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo, 2018)
The Late Paleozoic Ice Age (LPIA) was one of Earth’s most extreme climatic events where sea level and biotic restructuring were driven by linked oscillations in the climate system. Despite an evolving understanding of the ...