Leo, G.W., Hedge, C.E. and Marvin, R.F., 1980. Geochemistry, strontium isotope data, and potassium-argon ages of the andesite-rhyolite association in the Padang area, West Sumatra. J. Volcanol. Geotherm. Res., 7: 139-156.
Quaternary volcanoes in the Padang area on the west coast of Sumatra have produced two-pyroxene, calc-alkaline ande…