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Deweras Aeolianites
Submitted by Andrew du Toit on Wed, 22/10/2014 - 15:51 | Last updated: Mon, 24/10/2022 - 15:41
Grid Ref (WGS84 Lat/Long in decimal degrees)
-17.388956, 30.048882
Location:
Angwa River, on the road between Chinhoyi Caves and Alaska Mine.
Stratigraphy:
Deweras Group
Description:
Large-scale planar crossbedded arkosic sandstones of the Deweras Group display small-scale features that are diagnostic of aeolianites, including em-scale inversely-graded ripple-cross-laminated "subcritically-climbing translatent strata" (Hunter, 1976), wedge-shaped massive grainflows (avalanche deposits), and pinstripe lamination. These are among the oldest authenticated aeolianites in the world (Master, 1995).
Further Reading:
Excursion Guide
IGCP Project 363:
Lower Proterozoic of Sub-Equatorial Africa
Post-Conference Field Excursion No 2:
The Palaeo proterozoic Magondi Mobile Belt, NW Zimbabwe
25-30 September 1996 compiled by Sharad Master of Economic Geology Research Unit, Department of Geology,University of the Witwatersrand, Johannesburg, South Africa
Contributed:
28/11/2009
Updated:
22/10/2014
