Late Holocene advance of the Muller Ice Shelf, Antarctic Peninsula

sedimentological, geochemical and palaeontological evidence

E. W. Domack, S. E. Ishman, A. B. Stein, C. E. McClennen, A.J. Timothy Jull

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The advance of the ice shelf is inferred from a reduction in the total organic carbon content and an increase in well-sorted, aeolian sand in cores proximal to the present calving line. This sedimentological change is paralleled by a change in the foraminiferal assemblages within the cores. Advance of the ice shelf is indicated by a shift from assemblages dominated by calcareous benthic and planktonic forms to those dominated by agglutinated forms. A 14C chronology for the cores indicates that the advance of the Muller Ice Shelf took place c. 400 years ago, coincident with glacier advances in other high southern latitude sites during the onset of the Little Ice Age. Ice core evidence, however, documents this period as one of warmer temperatures for the Antarctic Peninsula. It is suggested that the ice shelf advance was linked to the exclusion of circumpolar deep water from the fjord. This contributed to increased mass balance of the ice shelf system by preventing the rapid undermelt that is today associated with warm circumpolar deep water within the fjord. Recent retreat of the calving line of the Muller Ice Shelf that is apparently in response to a recent (four decade long) warming trend along the western side of the Antarctic Peninsula. -Authors

Original languageEnglish (US)
Pages (from-to)159-170
Number of pages12
JournalAntarctic Science
Volume7
Issue number2
StatePublished - 1995

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ice shelf
ice
Holocene
fjord
deep water
calving
glacier advance
ice core
total organic carbon
chronology
mass balance
glaciers
warming
sand
water
carbon
temperature

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Environmental Science(all)

Cite this

Late Holocene advance of the Muller Ice Shelf, Antarctic Peninsula : sedimentological, geochemical and palaeontological evidence. / Domack, E. W.; Ishman, S. E.; Stein, A. B.; McClennen, C. E.; Jull, A.J. Timothy.

In: Antarctic Science, Vol. 7, No. 2, 1995, p. 159-170.

Research output: Contribution to journalArticle

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AU - McClennen, C. E.

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