Overview
Identifiers
Inventory Number
3220CB3
Site Name
Geosite: Ashoek interdistributary sandstone and mudstone
Site Category
Geological
References
Date Retrieved
Reference Types
Other Publication
Citation
Cole, D.I. and Wickens, H. de V. (1998). Lower Karoo Supergroup: glacial, basinal and terrestrial environments in the southwestern part of the main Karoo basin. Guidebook 10th Gondwana Conference, University of Cape Town, South Africa, No. Pr 1, 77p.
Reference Types
Other Publication
Citation
Geological Survey (1983). Geological map of Sheet 3220 Sutherland (scale 1:250 000). Publication, Geological Survey of South Africa.
Record Administration
Author
doug.cole
Post date
Monday, October 28, 2013 - 11:02
Last modified
Thursday, May 2, 2024 - 18:19
Location
Location
Mapping
-32.631613, 20.362458
Northern Cape
  • Namakwa
  • Karoo Hoogland
Grading
Autoid
Grading - 225404
Submitted by
Submitted by doug.cole on 28/10/2013 - 11:31.
Grading
Grade IIIb
Grading Date
GradingComment

Geosite covering sandstone and mudstone in the low eastern cliff of the Tanqua River. The geological succession displays sedimentary features indicating original deposition in a shallow interdistributary bay environment. The geosite is easily accessible and should be classified as a local heritage site. Grading by: DOUG COLE

Significance criteria
Significance Categories
Understanding Natural or Cultural Heritage
Sphere of Significance
Local
Level
Medium
Statement of Significance

The sandstone displays channel features, load casts and dewatering structures and represents crevasse distributary channels with associated levee and overbank deposits prograding over interdistributary muds. It forms part of the Permian Waterford Formation and such exposures are rare. This geosite is easily accessible lying close to the road from Sutherland to the Tanqua Karoo near the base of Verlatenkloof Pass. Modern day interdistributary sediments are deposited subaqueously in offshore regions and this geosite enables one to see such deposits in the geological record.

Media
Images uploaded directly to Site
Powered by Drupal

Creative Commons Licence
This work is licensed under a Creative Commons Attribution-ShareAlike 2.0 South Africa License.