GEOLOGY AND PHYSICAL GEOGRAPHY )\ s the area under detailed review has no clear natural or political

The Arabian peninsula owes its existence as a separate land-mass to faulting in the earth's crust. The rifts may therefore be briefly discussed first, then the geology and physiography of the peninsula itself. The principal divisions of this chapter, some of which are further subdivided, are:

(i) The rifts. (ii) Structure and relief.