The detritus derived from arc
orogens forms a spectrum of sand types including lithic-rich
volcaniclastic debris at one extreme and more quartz-feldspathic
detritus of largely plutonic origin at the other extreme
(Dickinson and Suczek, 1979). This coincides with the results
obtained from the present study (Table 1) and the investigation
of the quartz types, especially for the Injana sandstones.