Pliocene-Pleistocene glaciomarine sedimentation in eastern Prydz Bay and development of the Prydz trough-mouth fan, ODP Sites 1166 and 1167, East Antarctica

Sandra Passchier, P. E. O'Brien, J. E. Damuth, N. Januszczak, D. A. Handwerger, J. M. Whitehead

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Lithostratigraphy, grain sizes and down-hole logs of Site 1166 on the continental shelf, and Site 1167 on the upper slope, are analyzed to reconstruct glacial processes in eastern Prydz Bay and the development of the Prydz trough-mouth fan. In eastern Prydz Bay upper Pliocene-lower Pleistocene glaciomarine sediments occur interbedded with open-marine muds and grade upward into waterlaid tills and subglacial tills. Lower Pleistocene sediments of the trough-mouth fan consist of coarse-grained debrites interbedded with bottom-current deposits and hemipelagic muds, indicating repeated advances and retreats of the Lambert Glacier-Amery Ice Shelf system with respect to the shelf break. Systematic fluctuations in lithofacies and down-hole logs characterize the upper Pliocene-lower Pleistocene transition at Sites 1166 and 1167 and indicate that an ice stream advanced and retreated within the Prydz Channel until the mid Pleistocene. The record from Site 1167 shows that the grounding line of the Lambert Glacier did not extend to the shelf break after 0.78 Ma. Published ice-rafted debris records in the Southern Ocean show peak abundances in the Pliocene and the early Pleistocene, suggesting a link between the nature of the glacial drainage system as recorded by the trough-mouth fans and increased delivery of ice-rafted debris to the Southern Ocean.

Original languageEnglish
Pages (from-to)279-305
Number of pages27
JournalMarine Geology
Volume199
Issue number3-4
DOIs
StatePublished - 10 Sep 2003

Fingerprint

Ice
Ocean Drilling Program
Sedimentation
Fans
Pliocene
trough
Pleistocene
sedimentation
Glaciers
ice-rafted debris
Debris
shelf break
Sediments
glacier
mud
glaciomarine deposit
Electric grounding
grounding line
ice stream
lithostratigraphy

Keywords

  • Glacial lithofacies
  • Glaciomarine
  • Leg 188
  • Ocean Drilling Program
  • Trough-mouth fan

Cite this

Passchier, Sandra ; O'Brien, P. E. ; Damuth, J. E. ; Januszczak, N. ; Handwerger, D. A. ; Whitehead, J. M. / Pliocene-Pleistocene glaciomarine sedimentation in eastern Prydz Bay and development of the Prydz trough-mouth fan, ODP Sites 1166 and 1167, East Antarctica. In: Marine Geology. 2003 ; Vol. 199, No. 3-4. pp. 279-305.
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abstract = "Lithostratigraphy, grain sizes and down-hole logs of Site 1166 on the continental shelf, and Site 1167 on the upper slope, are analyzed to reconstruct glacial processes in eastern Prydz Bay and the development of the Prydz trough-mouth fan. In eastern Prydz Bay upper Pliocene-lower Pleistocene glaciomarine sediments occur interbedded with open-marine muds and grade upward into waterlaid tills and subglacial tills. Lower Pleistocene sediments of the trough-mouth fan consist of coarse-grained debrites interbedded with bottom-current deposits and hemipelagic muds, indicating repeated advances and retreats of the Lambert Glacier-Amery Ice Shelf system with respect to the shelf break. Systematic fluctuations in lithofacies and down-hole logs characterize the upper Pliocene-lower Pleistocene transition at Sites 1166 and 1167 and indicate that an ice stream advanced and retreated within the Prydz Channel until the mid Pleistocene. The record from Site 1167 shows that the grounding line of the Lambert Glacier did not extend to the shelf break after 0.78 Ma. Published ice-rafted debris records in the Southern Ocean show peak abundances in the Pliocene and the early Pleistocene, suggesting a link between the nature of the glacial drainage system as recorded by the trough-mouth fans and increased delivery of ice-rafted debris to the Southern Ocean.",
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Pliocene-Pleistocene glaciomarine sedimentation in eastern Prydz Bay and development of the Prydz trough-mouth fan, ODP Sites 1166 and 1167, East Antarctica. / Passchier, Sandra; O'Brien, P. E.; Damuth, J. E.; Januszczak, N.; Handwerger, D. A.; Whitehead, J. M.

In: Marine Geology, Vol. 199, No. 3-4, 10.09.2003, p. 279-305.

Research output: Contribution to journalArticle

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T1 - Pliocene-Pleistocene glaciomarine sedimentation in eastern Prydz Bay and development of the Prydz trough-mouth fan, ODP Sites 1166 and 1167, East Antarctica

AU - Passchier, Sandra

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