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GEOREF RECORD

Minimal Pliocene-Pleistocene uplift of the dry valleys sector of the Transantarctic Mountains; a key parameter in ice-sheet reconstructions: Comment

John C. Behrendt and Alan K. Cooper

Geology (Boulder) (July 1994) 22 (7): 668-669

Abstract

In the comment, Behrendt et al. state that Wilch et al. (1993) challenged the hypothesis of Behrendt and Cooper (1991) that the shoulder escarpment of the West Antarctic rift system (partly in the Transantarctic Mountains) has episodic differential uplift rates as great as about 1 km/m.y. in crustal blocks containing the highest peaks (but not the dry valleys), since Pliocene time, and that they also challenged the speculation that uplift of the rift shoulder may have forced the climatic changes that led to one or more of the advances of the antarctic ice sheet. In the reply, Wilch et al. agree with Behrendt and Cooper that the Transantarctic Mountains consist of many tectonic blocks that were probably uplifted episodically, but the present authors disagree that an episode of rapid widespread surface uplift occurred in Pliocene-Pleistocene time. This disagreement bears on the suggestion that rapid uplift beginning 2-5 m.y.a. caused a climatic change from temperate to polar conditions in Antarctica at 2.5 Ma.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 22
Serial Issue: 7
Modified Title: Minimal Pliocene-Pleistocene uplift of the dry valleys sector of the Transantarctic Mountains; a key parameter in ice-sheet reconstructions: Comment
Affiliation: U. S. Geological Survey, Denver, CO, United States
Pages: 668-669
Published: 199407
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 10
Accession Number: 1994-038207
Categories: Quaternary geologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: For reference to reply see Wilch, T. I., et al., Geology (Boulder), Vol. 22, No. 7, 1994; for reference to original see Vol. 21, p. 841, 1993
S87°00'00" - S60°00'00", W165°00'00" - W40°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States
Update Code: 199418
Program Name: USGSOPNon-USGS publications with USGS authors
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