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(Article of periodic en Anglais - 2012)

Document title

Contrasted perceptions of Uluru

Authors(s) and Affiliation(s)

TWIDALE C.R. (1) ; BOURNE J.A. (1) ;
(1) School of Earth and Environmental Sciences, Geology and Geophysics, Univ., Adelaide, AUSTRALIE

Abstract

Uluru is an inselberg shaped in arkosic sandstone located in the arid plains of central Australia. The indigenous people believed it rose out of a sand hill and has since remained unchanged. The inselberg and its decorations have been construed in terms of climatic variations. Uluru also has been interpreted as a compressed and resistant compartment that was exposed as a low rise in the latest Mesozoic. The steep flanks were shaped in the Eocene by deep subsurface weathering followed by stripping of the regolith and exposure of bedrock forms. Large tafoni and breaks of slope were formed on the southern side where permeable sediments abutted the residual. Following their exposure, basal flares and footcaves were shaped during a later period of subsurface weathering. The inselberg has grown as a relief feature not by uplift, but by the lowering of the surrounding plains. The morphology of Uluru is an expression of episodic exposure

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2012, vol. 33, no3 [pp. 285-302]

Bibliographic references : 4 p.

Collation : 7 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.2747/0272-3646.33.3.285

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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