petrology of the jabal Al-Badhah area Ad-Dawadimi district, Saudi Arabia

ABSTRACT

The layered gabbroic intrusion of the Jabal Ar-Radhah area in the Ad-Dawadimi district is almost devoid of cryptic layering and consist of olivine gabbro gradually differentiated to gabbro and augite troctolite. Rhythmic and inch-scale layering within the gabbroic layers are almost absent. Most of these gabbros are amphibolitized with partial or complete replacement of pyroxene. These intrusions exist as roof pendants within the pink granitic batholith