Discovery of adakites within the pliocene-quaternary collisional magmatism in Armenia

Geochemistry and isotopy of adakitic rhyolites of Tsakhkunyats ridge and adakitic granitic xenoliths found in eruption products of Garusar volcano within Syunik volcanic upland in south Armenia is discussed. It is demonstrated, that the studied adakites exhibit close spatial-temporal links with collisional magmas and may represent end members in mixing of crustal and mantle derived melts in origin of voluminous intermediate to acid volcanism of Aragats volcano and other volcanic provinces of Armenia