Surface Erosion
It is assumed that the Horeke basalt is the only basalt rock showing such accentuated surface erosion (like karst, clints or lapiez in limestone). Some of the cuts discovered are 1000 mm deep and up to 300 mm wide, which is highly unusual for basalts. It is the result of chemical leaching by the very acid soils generated by the Kauri forests that used to exist in the area.
Read more about this topic: Horeke Basalts
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