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Late Glacial–holocene Climatic Transition Record at the Argentinian Andean Piedmont Between 33 and 34° S : Volume 10, Issue 2 (30/04/2014)

By Mehl, A. E.

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Book Id: WPLBN0003991206
Format Type: PDF Article :
File Size: Pages 13
Reproduction Date: 2015

Title: Late Glacial–holocene Climatic Transition Record at the Argentinian Andean Piedmont Between 33 and 34° S : Volume 10, Issue 2 (30/04/2014)  
Author: Mehl, A. E.
Volume: Vol. 10, Issue 2
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Zárate, M. A., & Mehl, A. E. (2014). Late Glacial–holocene Climatic Transition Record at the Argentinian Andean Piedmont Between 33 and 34° S : Volume 10, Issue 2 (30/04/2014). Retrieved from http://ebook2.worldlibrary.net/


Description
Description: Instituto de Ciencias de la Tierra y Ambientales de La Pampa (INCITAP, CONICET – Universidad Nacional de La Pampa), Uruguay 151, Santa Rosa, La Pampa, Argentina. The Arroyo La Estacada (~ 33°28' S, 69°02' W), eastern Andean piedmont of Argentina, cuts through an extensive piedmont aggradational unit composed of a dominant Late Pleistocene–early Holocene (LP–EH) alluvial sequence that includes several paleosols.

One of these paleosols developed affecting the topmost part of likely Late Glacial aeolian deposits aggraded into a floodplain environment by the end of the Late Pleistocene. The paleosol shows variable grade of development along the arroyo outcrops. Organic matter humification, carbonate accumulation and redox processes were the dominant processes associated with paleosol formation. By the early Holocene, when the formation of the paleosol ended, renewed alluvial aggradation and high magnitude flooding events affected the arroyo's floodplain environment. Accordignly, a period of relative landscape stability in the Arroyo La Estacada basin is inferred from the paleosol developed by the LP–EH transition in response to the climatic conditions in the Andes cordillera piedmont after the Late Glacial arid conditions. The analyzed Late Glacial–Holocene alluvial record of the Andean piedmont constitutes a suitable record of the LP–EH climatic transition in the extra-Andean region of Argentina. It is in agreement with regional paleoclimatic evidence along the southern tip of the South American continent, where other pedosedimentary sequences record similar late Quaternary paleoenvironmental changes over both fluvial and interfluvial areas.


Summary
Late Glacial–Holocene climatic transition record at the Argentinian Andean piedmont between 33 and 34° S

Excerpt
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