The exhumation of the Northern Patagonian Massif Gondwana Planation surface due to uprising during the Oligocene

Autor:	Aragón, Eugenio, Aguilera, Emilia Yolanda, Cavarozzi, Claudia Ernestina, Ribot, Alejandro Mario, Rabassa, Jorge, Ollier, Cliff
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	Basalts geography geography.geographical_feature_category Paleozoic Inversion (geology) Massif Cretaceous Planation surface Paleontology Gondwana Altiplano Patagonia Epeirogenic movement Geología Plateau Geology Sea level
Zdroj:	SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP Gondwana Landscapes in southern South America ISBN: 9789400777019
Popis:	The altiplano (or high plain) of the Northern Patagonian Massif is a large, 100,000 km2 geomorphological unit that rose from sea level to at least 1,200 metres above sea level (m a.s.l.) in Early Oligocene times, as a consequence of epeirogenic uplift. This uniform tableland feature is essentially a Cretaceous planation surface carved on Paleozoic igneous and metamorphic rocks of the Northern Patagonian Massif. This planation surface had been preserved by a thin and scattered cover of Maastrichtian-Danian marine sediments and Late Oligocene-Early Miocene basaltic flows. Erosion since Middle Miocene times at this tableland has exposed much of the Gondwana planation surface and developed numerous basaltic plateaus by relief inversion. Facultad de Ciencias Naturales y Museo
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f956eb9982fd6e72be9afe4eb6fd028 http://sedici.unlp.edu.ar/handle/10915/127383 Zobrazit plný text záznamu