Thus the rocks found in the Mpumalanga quartzitic sandstone they erupted through the eroding landscape, ultimately to form the parallel mountain ranges that protrude from the coastal plain of the south and south-west Cape.
22.
On the west side of the bay there is a general tendency towards fine to medium quartzitic sand and coarser calcareous material, mostly mollusc shell fragments, with patches of a maerl of branching coralline algae fragments.
23.
The east side of False Bay also has extensive areas of fine quartzitic sand bottom, and there are also occasional deposits of a very fine low density silty material which is easily disturbed and returned to suspension.
24.
When these softer layers eroded away, like a cream-topping on a cake, they left a very hard, flat erosion-resistant quartzitic sandstone platform behind which, today, forms Table Mountain's top.
25.
The earliest evidence of human occupation is seen at several sites in the complex in the form of a lithic industry composed of quartzitic sandstone polyhedrals and sub-spheroids associated with worked cobbles ( Soriano et al . 2010 ).
26.
Continued erosion exposed more and more of these quartzitic mountain ranges, but the rivers, now confined to narrow, fast flowing gorges, continued breaking through each barrier as the surrounding landscape eroded to lower and lower levels, particularly during the past 20 million years.
27.
A deposit, known as the "'Peninsula Formation "'( also often referred to as "'Table Mountain Sandstone "'), consisting of thickly layered quartzitic sandstone, with a maximum thickness of 2000 m, was laid down.
28.
The lowest part of the gorge is formed in the Namurian Quartzitic Sandstone Group and the South Wales Lower Coal Measures, over which younger limestones have been thrust to the north-east, as demonstrated by the BGS maps ( 1 : 50, 000 sheet 280, Wells ).
29.
During the Rhuddanian ( Silurian ) initially 20 m of quartzitic rocks, the Bar Quartzite, were deposited followed by 50 to 250 m of dark, Ludlow ), the shales incorporate calcareous horizons and calcareous nodules ( with conodonts, nautiloids, bivalves, crinoids, and ostracods ).
30.
First, it outcrops just north of the Colorado River in the eastern side of the quartzitic sandstones and siltstones that have a maximum thickness of about 15 m and disappears within about 200 m west of the Butte Fault between the upper member of the Nankoweap Formation and the eroded surface of the Cardenas Basalt.
