Baakens Valley Action
The Baakens River Valley


Geology of the Baakens River

The geology of the Baakens River consists mainly of the Peninsula formation consisting of hard sandstones and quartzites of the Table Mountain Series of the Cape Supergroup. This rock is fine-grained and white or pale-grey coloured with thin subordinate layers of shale. It is extremely weather resistant and in the in the lower reaches gives rise to steep cliffs.

The rock gives the Baakens River its characteristic acidity and poor, shallow and stony soils.  These soils create the ideal acidic habitat for fynbos and thicket vegetation.

Deep sandy soils occur in places along the river bed which become waterlogged after heavy rains. The drainage of the soils is further impeded by the underlying ferricrete, increasing their tendency to hold water.