Constraints on age, erosion, and uplift of Neogene glacial deposits in the Transantarctic Mountains determined from in situ cosmogenic 10Be and 26Al

E. J. Brook, E. T. Brown, M. D. Kurz, R. P. Ackert, G. M. Raisbeck, F. Yiou

Research output: Contribution to journalArticlepeer-review

106 Scopus citations

Abstract

10Be and 26Al data from sandstone boulders in three Neogene glacial deposits in the McMurdo Sound-Dry Valleys region of southern Victoria Land, Antarctica, indicate minimum exposure ages of ~3 Ma and maximum long-term erosion rates of ~5-12 cm/m.y., supporting the suggestion that polar desert conditions have persisted in the Dry Valleys since at least late Pliocene time. Variation of cosmogenic nuclide production rate with altitude also allows constraints on past uplift rates. -from Authors

Original languageEnglish (US)
Pages (from-to)1063-1066
Number of pages4
JournalGeology
Volume23
Issue number12
DOIs
StatePublished - Jan 1 1995

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