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The NE-SW Tertiary magmatic belt of central Kalimantan is related to two separate periods of subduction; during the Eocene-Oligocene and Late Oligocene-Miocene. The younger magmatic belt is superimposed upon the earlier belt. This magmatic belt is characterized chiefly by Late Oligocene-Miocene volcanic products, among which limited exposures of the Eocene volcanics have also been mapped by previous...
Tertiary and Quaternary magmatic rocks from West Sulawesi record the complex history of part of the Sundaland margin where subduction and collision have been and are still active. The present study, based on petrographic data, major- and trace-element chemistry and 40 K- 40 Ar dating aims to document the age and chemical characteristics of the magmatic formations from West...
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