Stormberg Group
Stormberg Group 

The Stormberg Group is subdivided into three formations which preserve a record of gradual desertification.

 

Sandstone of the lowermost Molteno Formation was formed by rivers in a wet environment. These are now exposed as small cliffs in the lower Drakensberg and can be easily recognised by their sparkling appearance. This is due to minute quartz crystals that coat and bind together the sand grains.

 

The Molteno Formation is in turn overlain by red mudstone of the Elliot Formation which contains dinosaur fossils such as the 12 metre long Melanorosaurus.

 

Melanorosaurus

Melanorosaurus

The overhanging white cliffs of the middle Drakensberg are composed of Clarens Formation sandstone. These sandstones were deposited as large dunes in a desert environment and preserve large internal bedding structures called crossbeds. Worm burrows and dinosaur footprints can also be found in these rocks.

Clarens Sandstone, Golden Gate Highlands National Park

Clarens Sandstone, Golden Gate Highlands National Park

(source: http://en.wikipedia.org/wiki/File:Brandwag_rock.JPG)

Cross bedding in clarens formation


 Trace fossils in Clarens formation

Cross bedding in Clarens formation

Trace fossils in Clarens formation


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