Notes on the geomorphology of The Humps, near Hyden, Western Australia

Abstract

The domical inselberg or bornhardt known as The Humps is in many respects typical of the many granitic residuals of the Wheatbelt. Of great antiquity, it is a two-stage form which was initiated beneath a regolithic cover, and has been exposed in stages. Its minor forms (pitting, gnammas of various types, polygonal cracking, sheet structure) are also commonplace, though in some instances, such as the armchair-shaped hollows, they are especially well developed. But the evidence for its great age, for episodic exposure, and for the subsurface initiation of tafoni is noteworthy