Abstract
Magmatic differentiation in Pavagarh adopted the courses corresponding to the olivine-basalt trend including olivine-basalt, mugearite, latite and pitch-stone and the normal basalt trend comprising tholeiitic basalts, andesite, dellenite, and rhyolite. The dellenite-rhyolite assemblage is not consanguineous. Their average composition corresponds with the petrochemical field of the basalt-andesite-dacite-rhyolite association or the calc-alkaline series of Nockolds. It lies in between plateau and tholeiitic basalts of different provinces and shows alkali enrichment in the initial phases of differentiation.
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