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dc.contributor.authorBromley, Gordon R. M.
dc.contributor.authorHall, Brenda L.
dc.contributor.authorSchaefer, Joerg M.
dc.contributor.authorWinckler, Gisela
dc.contributor.authorTodd, Claire E.
dc.contributor.authorRademaker, Kurt M.
dc.date.accessioned2019-01-10T14:48:45Z
dc.date.available2019-01-10T14:48:45Z
dc.date.issued2011-01-19
dc.identifier.citationBromley, Gordon R.M., Hall, Brenda L., Schaefer, Joerg M., Winckler, Gisela, Todd, Claire E., & Rademaker, Kurt M. (2011). Glacier fluctuations in the southern Peruvian Andes during the late-glacial period, constrained with cosmogenic 3He. Journal of Quaternary Science, 26(1), 37-43. doi:10.1002/jqs.1424en_IE
dc.identifier.issn0267-8179
dc.identifier.issn1099-1417
dc.identifier.urihttp://hdl.handle.net/10379/14781
dc.description.abstractThe occurrence of pronounced climate reversals during the last glacial termination has long been recognised in palaeoclimate records from both hemispheres and from high to low latitudes. Accurate constraint of both the timing and magnitude of events, such as the Younger Dryas and Antarctic Cold Reversal, is vital in order to test different hypotheses for the causes and propagation of abrupt climate change. However, in contrast to higher-latitude regions, well-dated records from the Tropics are rare and the structure of late-glacial tropical climate remains uncertain. As a step toward addressing this problem, we present an in situ cosmogenic He-3 surface exposure chronology from Nevado Coropuna, southern Peru, documenting a significant fluctuation of the ice margin during the late-glacial period. Ten tightly clustered ages from a pair of moraines located halfway between the modern glacier and the Last Glacial Maximum terminus range from 11.9 to 13.9 ka and give an arithmetic mean age of 12.8 +/- 0.7 ka (1 sigma). These data constitute direct evidence for a readvance, or prolonged stillstand, of glaciers in the arid Andes of southwestern Peru. Copyright (C) 2011 John Wiley & Sons, Ltd.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherWileyen_IE
dc.relation.ispartofJournal of Quaternary Scienceen
dc.subjectANTARCTIC COLD REVERSALen_IE
dc.subjectSURFACE EXPOSURE AGESen_IE
dc.subjectYOUNGER DRYASen_IE
dc.subjectCORDILLERA BLANCAen_IE
dc.subjectPRODUCTION-RATESen_IE
dc.subjectTROPICAL ANDESen_IE
dc.subjectNEW-ZEALANDen_IE
dc.subjectICE-COREen_IE
dc.subjectHOLOCENEen_IE
dc.subjectCLIMATEen_IE
dc.titleGlacier fluctuations in the southern Peruvian Andes during the late-glacial period, constrained with cosmogenic He-3en_IE
dc.typeArticleen_IE
dc.date.updated2018-12-27T22:29:39Z
dc.identifier.doi10.1002/jqs.1424
dc.local.publishedsourcehttps://doi.org/10.1002/jqs.1424en_IE
dc.description.peer-reviewedpeer-reviewed
dc.internal.rssid13081972
dc.local.contactGordon Bromley, -. - Email: gordon.bromley@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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