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The Chagai–Raskoh arc is located in western Pakistan and extends into Iran and Afghanistan. The arc forms an elongate body trending EW and is roughly 500km long by 150km wide. Activity along the arc began in the Late Cretaceous and continued through into the Quaternary.The oldest volcanic rocks in the arc belong to the Sinjrani and Kuchakki Formations. These rocks are primarily basalts and andesites...
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