Clemens and Stevens (2016) are to be congratulated on an excellent summary of the truly amazing volcanic phase of the Cape Granite Suite; the distinction between two large eruptive centres in the Postberg nature reserve as described by Scheepers and Nortjé (2000) and the Saldanha region west of the town is well founded. In view of the extent of the Saldanha+Postberg occurrence, yet undescribed Cape volcanic phenomena, dated at ~515 Ma (Scheepers and Poujol 2002), could well occur elsewhere, particularly in the Tygerberg terrane. The tempo of crustal uplift history will need to be addressed, because we are...

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