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Rock Slope Development in Mcmurdo Oasis, Antarctica, and Implications for Interpretations of Glacial History

 

作者: AugustinusP.C.,   SelbyM.J.,  

 

期刊: Geografiska Annaler: Series A, Physical Geography  (Taylor Available online 1990)
卷期: Volume 72, issue 1  

页码: 55-62

 

ISSN:0435-3676

 

年代: 1990

 

DOI:10.1080/04353676.1990.11880300

 

出版商: Taylor&Francis

 

数据来源: Taylor

 

摘要:

ABSTRACTThe upper slopes of the Asgard and Olympus ranges, of the Transantarctic Mountains, have been assessed for their rock mass strength. A finite-element model of two peaks has shown that under gravitational loading they have a tendency to spread laterally as a result of internal stresses. Stress release joints and slab failures are a consequence of this loading. The characteristic slope forms are cliffs in strength equilibrium surmounting Richter denudationslopes. It is argued that the ubiquity of such forms, and their antiquity, make an hypothesis of high-level glacial overriding unverifiable.

 

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