Skip to main content

Research Repository

Advanced Search

Early East Antarctic Ice Sheet growth recorded in the landscape of the Gamburtsev Subglacial Mountains

Rose, K.C.; Ferraccioli, F.; Jamieson, S.S.R.; Bell, R.; Corr, H.; Creyts, T.; Fretwell, P.T.; Jordan, T.; Damaske, D.; Braaten, D.

Early East Antarctic Ice Sheet growth recorded in the landscape of the Gamburtsev Subglacial Mountains Thumbnail


K.C. Rose

F. Ferraccioli

R. Bell

H. Corr

T. Creyts

P.T. Fretwell

T. Jordan

D. Damaske

D. Braaten


The Gamburtsev Subglacial Mountains are regarded as a key nucleation site for the Antarctic Ice Sheet and they retain a unique long-term record of pre-glacial and early glacial landscape evolution. Here, we use a range of morphometric analyses to constrain the nature of early glaciation and subsequent ice sheet evolution in the interior of East Antarctica, using a new digital elevation model of the Gamburtsev Subglacial Mountains, derived from an extensive airborne radar survey. We find that an inherited fluvial landscape confirms the existence of the Gamburtsev Subglacial Mountains prior to the onset of glaciation at the Eocene–Oligocene climate boundary (ca. 34 Ma). Features characteristic of glaciation, at a range of scales, are evident across the mountains. High elevation alpine valley heads, akin to cirques, identified throughout the mountains, are interpreted as evidence for early phases of glaciation in East Antarctica. The equilibrium line altitudes associated with these features, combined with information from fossil plant assemblages, suggest that they formed at, or prior to, 34 Ma. It cannot be ruled out that they may have been eroded by ephemeral ice between the Late Cretaceous and the Eocene (100–34 Ma). Hanging valleys, overdeepenings, truncated spurs and steep-sided, linear valley networks are indicative of a more widespread alpine glaciation in this region. These features represent ice growth at, or before, 33.7 Ma and provide a minimum estimate for the scale of the East Antarctic Ice Sheet between ca. 34 and 14 Ma, when dynamic fluctuations in ice extent are recorded at the coast of Antarctica. The implications are that the early East Antarctic Ice Sheet grew rapidly and developed a cold-based core that preserved the alpine landscape. The patterns of landscape evolution identified provide the earliest evidence for the development of the East Antarctic Ice Sheet and can be used to test coupled ice–climate evolution models.


Rose, K., Ferraccioli, F., Jamieson, S., Bell, R., Corr, H., Creyts, T., …Braaten, D. (2013). Early East Antarctic Ice Sheet growth recorded in the landscape of the Gamburtsev Subglacial Mountains. Earth and Planetary Science Letters, 375, 1-12.

Journal Article Type Article
Publication Date Aug 1, 2013
Deposit Date Jul 30, 2013
Publicly Available Date Sep 6, 2013
Journal Earth and Planetary Science Letters
Print ISSN 0012-821X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 375
Pages 1-12
Keywords Landscape evolution, geomorphology, glacial erosion, fluvial erosion, hypsometry


Published Journal Article (2.8 Mb)

Copyright Statement
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and
reproduction in any medium, provided the original author and source are credited.

You might also like

Downloadable Citations