Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)

ABSTRACT Laguna Las Vueltas (LLV) area retains the morphology of a late Pleistocene watershed that was flooded during a mid-Holocene marine transgression. Sediments associated with a paleosol dated at 22,582 cal yr BP reflect subaerial exposure of the area prior to the submergence during the marine...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Montes,Alejandro, Santiago,Fernando, Salemme,Mónica, López,Ramiro
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2020
Materias:	Geomorphology Incised valleys Holocene marine transgression Lunettes Geoarchaeology Pans
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000100061
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-71062020000100061
record_format	dspace
spelling	oai:scielo:S0718-710620200001000612020-02-20Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)Montes,AlejandroSantiago,FernandoSalemme,MónicaLópez,Ramiro Geomorphology Incised valleys Holocene marine transgression Lunettes Geoarchaeology Pans ABSTRACT Laguna Las Vueltas (LLV) area retains the morphology of a late Pleistocene watershed that was flooded during a mid-Holocene marine transgression. Sediments associated with a paleosol dated at 22,582 cal yr BP reflect subaerial exposure of the area prior to the submergence during the marine transgression. This transgression produced an extensive tidal flat near the mouth of the former LLV watershed by 7,477 cal yr BP. Subsequent decoupling of the Las Vueltas valley from the sea occurred through the growth of a baymouth barrier and a beach-ridge plain to the east. This decoupling turned the lagoon into a pan environment in which subsequent lake-level fluctuations were controlled by climate. A lunette dune developed at the pans in the former lagoon, providing a narrow corridor where humans trapped, killed and processed guanacos as early as 3,402 cal yr BP Changes in aeolian sedimentation hint at increased aridity during the past 500 years.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Andean geology v.47 n.1 20202020-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000100061en10.5027/andgeov47n1-3219
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Geomorphology Incised valleys Holocene marine transgression Lunettes Geoarchaeology Pans
spellingShingle	Geomorphology Incised valleys Holocene marine transgression Lunettes Geoarchaeology Pans Montes,Alejandro Santiago,Fernando Salemme,Mónica López,Ramiro Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
description	ABSTRACT Laguna Las Vueltas (LLV) area retains the morphology of a late Pleistocene watershed that was flooded during a mid-Holocene marine transgression. Sediments associated with a paleosol dated at 22,582 cal yr BP reflect subaerial exposure of the area prior to the submergence during the marine transgression. This transgression produced an extensive tidal flat near the mouth of the former LLV watershed by 7,477 cal yr BP. Subsequent decoupling of the Las Vueltas valley from the sea occurred through the growth of a baymouth barrier and a beach-ridge plain to the east. This decoupling turned the lagoon into a pan environment in which subsequent lake-level fluctuations were controlled by climate. A lunette dune developed at the pans in the former lagoon, providing a narrow corridor where humans trapped, killed and processed guanacos as early as 3,402 cal yr BP Changes in aeolian sedimentation hint at increased aridity during the past 500 years.
author	Montes,Alejandro Santiago,Fernando Salemme,Mónica López,Ramiro
author_facet	Montes,Alejandro Santiago,Fernando Salemme,Mónica López,Ramiro
author_sort	Montes,Alejandro
title	Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
title_short	Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
title_full	Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
title_fullStr	Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
title_full_unstemmed	Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)
title_sort	late pleistocene and holocene geomorphologic evolution of laguna las vueltas area, tierra del fuego (argentina)
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-71062020000100061
work_keys_str_mv	AT montesalejandro latepleistoceneandholocenegeomorphologicevolutionoflagunalasvueltasareatierradelfuegoargentina AT santiagofernando latepleistoceneandholocenegeomorphologicevolutionoflagunalasvueltasareatierradelfuegoargentina AT salemmemonica latepleistoceneandholocenegeomorphologicevolutionoflagunalasvueltasareatierradelfuegoargentina AT lopezramiro latepleistoceneandholocenegeomorphologicevolutionoflagunalasvueltasareatierradelfuegoargentina
_version_	1714205865470328832

Late Pleistocene and Holocene geomorphologic evolution of Laguna Las Vueltas area, Tierra del Fuego (Argentina)

Ejemplares similares