The Chagai District of the Quetta Division is in the northwestern part of Pakistan.
Igneous activity during the Himalayan orogeny included the extrusion of horizontally layered andesites of the Cretaceous Sinjrani Volcanic Group, emplacement of monzonitic stocks of the Cretaceous Chagai intrusions, and the extrusion of flows and tuffs of the Koh-i-Sultan Volcanic Group during the Pleistocene.
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USGS Numbered Series
Reconnaissance of the geology and ore mineralization in part of the Chagai District, Pakistan