RT Journal Article
T1 Prospecting Glacial Ages and Paleoclimatic Reconstructions Northeastward of Nevado Coropuna (16° S, 73° W, 6377 m), Arid Tropical Andes
A1 Úbeda Palenque, José
A1 Bonshoms, Martí
A1 Iparraguirre, Joshua
A1 Sáez, Lucía
A1 De La Fuente, Ramón
A1 Janssen, Lila
A1 Concha, Ronald
A1 Vásquez, Pool
A1 Masías, Pablo
AB This work investigates the timing, paleoclimatic framework and inter-hemispheric teleconnections inferred from the glaciers last maximum extension and the deglaciation onset in the Arid Tropical Andes. A study area was selected to the northeastward of the Nevado Coropuna, the volcano currently covered by the largest tropical glacier on Earth. The current glacier extent, the moraines deposited in the past and paleoglaciers at their maximum extension have been mapped. The present and past Equilibrium Line Altitudes (ELA and paleoELA) have been reconstructed and the chlorine-36 ages have been calculated, for preliminary absolute dating of glacial and volcanic processes. The paleoELA depression, the thermometers installed in the study area and the accumulation data previously published allowed development of paleotemperature and paleoprecipitation models. The Coropuna glaciers were in maximum extension (or glacial standstill) ~20–12 ka ago (and maybe earlier). This last maximum extension was contemporary to the Heinrich 2–1 and Younger Dryas events and the Tauca and Coipasa paleolake transgressions on Bolivian Altiplano. The maximum paleoELA depression (991 m) shows a colder (−6.4 ◦C) and moister climate with precipitation ×1.2–×2.8 higher than the present. The deglaciation onset in the Arid Tropical Andes was 15–11 ka ago, earlier in the most southern, arid, and low mountains and later in the northernmost, less arid, and higher mountains.
PB MDPI
SN 2076-3263
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/19097
UL https://hdl.handle.net/20.500.14352/19097
LA eng
NO Úbeda, Jose, et al. «Prospecting Glacial Ages and Paleoclimatic Reconstructions Northeastward of Nevado Coropuna (16° S, 73° W, 6377 m), Arid Tropical Andes». Geosciences, vol. 8, n.o 8, agosto de 2018, p. 307. DOI.org (Crossref), https://doi.org/10.3390/geosciences8080307.
NO Ministerio de Economía, Comercio y Empresa (España)
NO Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)
DS Docta Complutense
RD 8 jun 2025