oa Madoqua - On the origin of sheeting and laminae in granitic rocks: evidence from Antarctica, the Namib Desert and the Central Sahara
|Article Title||On the origin of sheeting and laminae in granitic rocks: evidence from Antarctica, the Namib Desert and the Central Sahara|
|© Publisher:||Namibian Ministry of Environment and Tourism|
|Affiliations||1 Department of Earth Sciences, University of Waikato, Hamilton, New Zealand|
|Publication Date||Jan 1977|
|Pages||171 - 179|
|Keyword(s)||Alluvial silts, Chemical, Domed inselbergs, Exfoliation process, Gneiss, Granite, Grus saturated with gypsum, Hydrostatic pressures, Ice free valleys, Landforms, Lithologies, McMurdo Oasis, Physical, Plate-like skins, Quartzite, Sandstone, Shells of rock, Spherulitic structures and Weathering processes|
Studies of granitic rock outcrops have been carried out in the McMurdo Oasis, Antarctica, and in the Namib Desert to test hypotheses of formation of large scale sheeting structures and of laminae. Laminae were also investigated in the Central Sahara. Evidence from Antarctica strongly supports the contention that sheeting may be a secondary feature resulting from unloading: evidence from the Namib is more equivocal but offers some support for this hypothesis.
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