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Type: Journal article
Title: Auto-exposure and underprinting in the exhumation of Neoproterozoic (subNama) inselbergs in southeastern Namibia
Author: Twidale, C.
Maud, R.
Citation: Zeitschrift fuer Geomorphologie: annals of geomorphology, 2013; 57(1):61-73
Publisher: Gebruder Borntraeger
Issue Date: 2013
ISSN: 0372-8854
Statement of
Twidale, C.R.; Maud, R.R.
Abstract: Though most of the gneissic inselbergs exhumed from beneath a cover of essentially undisturbed Early Cambrian Nama sedimentary strata have been re-exposed by river erosion, a few stand in isolation in enclosed depressions remote from surface streams. They are attributed to auto-exposure whereby circulating groundwaters are concentrated on the relatively impermeable buried residuals, causing weathering, shrinkage and compaction in the overlying sediments. This resulted in surface subsidence and eventual exposure of the inselbergs.
Keywords: auto-exposure
enclosed depression
groundwater weathering
scarp-foot depression
Rights: © 2012 Gebr. Borntraeger Verlagsbuchhandlung, Stuttgart, Germany.
DOI: 10.1127/0372-8854/2012/0086
Appears in Collections:Aurora harvest
Earth and Environmental Sciences publications

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