We welcome Zimmermann’s comments on our paper in that it enables us to explain again why we propose (not “claim”) to correlate the Vingerbreek Unconformity (Nama Group) in Namibia with the Groenefontein Unconformity (Cango Caves Group) in South Africa and the implications of this proposed correlation. However, Zimmermann (this volume) does not contribute any new data that might back up his comments, which are obviously based on the author’s inability to distinguish between glacial deposits sensu stricto and the far-field effects of glaciation (e.g. sea-level fall).

The occurrence of late (or latest) Ediacaran glaciations is not only relevant to the...

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