Late Quaternary glacial chronology on Nevado Illimani, Bolivia, and the implications for paleoclimatic reconstructions across the Andes

Dados Bibliográficos

ID24086777
AutoresColby A Smith (0000-0002-7335-6281, University of Cincinnati, autor correspondente), Thomas V Lowell (0000-0001-7826-0636, University of Cincinnati), Lewis A Owens (0000-0002-2525-5160, University of Cincinnati), Lewis A Owen, Marc W Caffee (0000-0002-6846-8967, Purdue University West Lafayette)
Ano2011
Volume75
Fascículo1
Páginas1-10
Data de publicação2011-01-01
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoQuaternary Research (JOURNAL)
Identificadores do periódicoISSN: 0033-5894 • E-ISSN: 1096-0287
EditoraCambridge University Press (CUP) (PUBLISHER)
DOI10.1016/j.yqres.2010.07.001
OpenAlexW2029746835
IdiomaEN
Citações recebidas8
Referências citadas54

10 Be terrestrial cosmogenic nuclide surface exposure ages from moraines on Nevado Illimani, Cordillera Real, Bolivia suggest that glaciers retreated from moraines during the periods 15.5–13.0 ka, 10.0–8.5 ka, and 3.5–2.0 ka. Late glacial moraines at Illimani are associated with an ELA depression of 400–600 m, which is consistent with other local reconstructions of late glacial ELAs in the Eastern Cordillera of the central Andes. A comparison of late glacial ELAs between the Eastern Cordillera and Western Cordillera indicates a marked change toward flattening of the east-to-west regional ELA gradient. This flattening is consistent with increased precipitation from the Pacific during the late glacial period.

Chronology · Cosmogenic nuclide · Geomorphology · Glacial period · Glacier · Last Glacial Maximum · Moraine · Physical geography · Quaternary · Surface exposure dating · Geological and Geochemical Analysis · Geological formations and processes · Geology · Geology and Paleoclimatology Research · Paleontology