Unveiling The Distinctive Characteristics: Continental Rift Magmas Vs. Continental Arc Magmas
Continental rift magmas originate from mantle plumes and decompression melting during crustal stretching, resulting in tholeiitic compositions. In contrast, continental arc magmas form from subduction zone processes, with partial melting of hydrous oceanic crust producing more evolved alkaline compositions. These distinct origins lead to contrasting mineral assemblages and geochemical characteristics. Understanding Continental Rifts and Arc…