ABSTRACT
The Pleistocene Dibdibah gravels of northern Kuwait contain three petrographically distinct
groups of clasts. These are: a) volcanics; b) granitic and c) sediments and metamorphics. The
volcanics, which are most abundant, consist of porphyritic rhyolites, soda-rhyolites, andesites
and dacites. The granitic and related rocks forming the second abundant rock group consist of
granites, microgranites, pegmatites, aplites, granophyres and quartz rocks (vein quartz). The
sediments and metamorphics are least abundant and consist of quartzites, amphibolites,
limestones, sandstones and cherts. On the bases of their petrography, the volcanic and
plutonic clasts in the Dibdibah gravels are believed to have been derived from the same
source in the northeastern part of the Arabian Shield.