Evidence against a young volcanic origin of the Gamburtsev Subglacial Mountains, Antarctica

Tina van de Flierdt, Sidney R. Hemming, Steven L. Goldstein, George E Gehrels, Stephen E. Cox

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The Gamburtsev Subglacial Mountains of East Antarctica are among Earth's most enigmatic mountain ranges. They are situated in the middle of Antarctica, buried under hundreds of meters of ice, and reach an elevation of more than 3000 m. These characteristics have given rise to speculation about their origin and composition, in particular whether they are a hotspot or remnants of ancient orogenic events. We studied fluvio-deltaic sands from ODP Site 1166 in Prydz Bay which were deposited prior to the onset of East Antarctic glaciation to address the question of their origin. Results for U-Pb dating of detrital zircons reveal an important age population of ∼530 Ma, which is accompanied by a dominant 40Ar/39Ar age population of ∼519 Ma for detrital hornblendes. The data show no sign of young volcanic contributions, suggesting an old continental origin of the mountains, leaving as enigmatic the cause of their great height and size.

Original languageEnglish (US)
Article numberL21303
JournalGeophysical Research Letters
Volume35
Issue number21
DOIs
StatePublished - Nov 16 2008

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Antarctic regions
mountains
volcanology
mountain
Ocean Drilling Program
hornblende
glaciation
hot spot
zircon
dating
ice
sands
sand
causes
Antarctica
young
mountain range

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Evidence against a young volcanic origin of the Gamburtsev Subglacial Mountains, Antarctica. / van de Flierdt, Tina; Hemming, Sidney R.; Goldstein, Steven L.; Gehrels, George E; Cox, Stephen E.

In: Geophysical Research Letters, Vol. 35, No. 21, L21303, 16.11.2008.

Research output: Contribution to journalArticle

van de Flierdt, Tina ; Hemming, Sidney R. ; Goldstein, Steven L. ; Gehrels, George E ; Cox, Stephen E. / Evidence against a young volcanic origin of the Gamburtsev Subglacial Mountains, Antarctica. In: Geophysical Research Letters. 2008 ; Vol. 35, No. 21.
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