LATE PLEISTOCENE ICE FLUCTUATIONS AND GLACIAL GEOMORPHOLOGY OF THE ARCHIPIELAGO DE CHILOE, SOUTHERN CHILE

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dc.contributor.authorGarcia, Juan L.
dc.date.accessioned2024-01-10T12:06:17Z
dc.date.available2024-01-10T12:06:17Z
dc.date.issued2012
dc.description.abstractMost of the last glacial maximum (LGM) glacier record west of the southern Andes (40-55 degrees S) is today submerged under the Pacific Ocean and therefore the Archipielago de Chiloe (42-43 degrees S) provides an unusual opportunity to study local sediment and landform associations to help understand paleoglacial features of the former Patagonian ice sheet (PIS). In this context, this work presents the first comprehensive glacial geomorphologic mapping of the central region of the Archipielago de Chiloe, which is located in a transitional geomorphic region between the Chilean Lake District (CLD, 39-41 degrees S, 73 degrees W) and northwest Patagonia ( 43-48 degrees S, 74 degrees W).
dc.description.abstractThe Chilotan glacial geomorphology and sediment associations resulted from a warm-based glacier that characterizes a typical active glacial temperate landsystem, which in central Chiloe combines deposits and landform units originated in subglacial and subaerial environments. Paleoglacial features that occur in central Chiloe are characteristic of an ice-sheet style of glaciation, which differentiates it from a typical Alpine glacial style defined previously for the CLD. Therefore, the Archipielago de Chiloe represents a geographical break point where the PIS became the large ice mass that occupied the Patagonian Andes during the last glacial period (Llanquihue Glaciation).
dc.description.abstractA double ice-contact slope on the east face of the Cordillera de La Costa provides evidence for the most extensive Early Llanquihue glacial advance on Isla Grande de Chiloe. The most prominent LGM advance in the area occurred at 26 000 cal yr BP, coincident with regional stadial conditions, and is defined by a big moraine along the east coast of the island.
dc.description.funderFONDECYT
dc.fechaingreso.objetodigital2024-05-09
dc.format.extent21 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1111/j.1468-0459.2012.00471.x
dc.identifier.eissn1468-0459
dc.identifier.issn0435-3676
dc.identifier.urihttps://doi.org/10.1111/j.1468-0459.2012.00471.x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76141
dc.identifier.wosidWOS:000311431900002
dc.information.autorucGeografía;Garcia J;S/I;9823
dc.issue.numero4
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final479
dc.pagina.inicio459
dc.publisherTAYLOR & FRANCIS LTD
dc.revistaGEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY
dc.rightsacceso restringido
dc.subjectPatagonian ice sheet
dc.subjectLlanquihue Glaciation
dc.subjectglacial geomorphology
dc.subjectChiloe
dc.subjectglacial landsystems
dc.subjectGRANDE-DE-CHILOE
dc.subjectLAKE DISTRICT
dc.subjectISLA-GRANDE
dc.subjectABRUPT VEGETATION
dc.subjectLLANQUIHUE DRIFT
dc.subjectNORTHERN ISLA
dc.subjectCLIMATE
dc.subjectCHRONOLOGY
dc.subjectHISTORY
dc.subjectMAXIMUM
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleLATE PLEISTOCENE ICE FLUCTUATIONS AND GLACIAL GEOMORPHOLOGY OF THE ARCHIPIELAGO DE CHILOE, SOUTHERN CHILE
dc.typeartículo
dc.volumen94
sipa.codpersvinculados9823
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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