Russia, Caucasus, Kabardino-Balkarian Republic, mountain Elbrus. Elbrus-Kazbek andesite-dacite-rhyolite volcanic complex. In the foreground - dacitic and andesidacitic lavas, breccia, tuffs. The third phase of the complex. Upper Pleistocene.
Russia, Amur Region, Mikhailovsky Pillars. Andesites - dark gray, greenish-gray rocks, with a massive, fluid texture. Porphyry phenocrysts up to 20%. Consist: andesine, hornblende, augite. Bulk - volcanic glass. Lower Cretaceous. Determination of absolute age - 115 million years.
Russia, Amur Region, Sergeyevskiye Pillars. Andesites - dark gray, greenish-gray rocks, with a massive, fluid texture. Porphyry phenocrysts up to 20%. Consist: andesine, hornblende, augite. Bulk - volcanic glass. Lower Cretaceous. Determination of absolute age - 115 million years.
Russia, Amur Region, Mikhailovsky Pillars. Andesites - dark gray, greenish-gray rocks, with a massive, fluid texture. Porphyry phenocrysts up to 20%. Consist: andesine, hornblende, augite. Bulk - volcanic glass. Lower Cretaceous. Determination of absolute age - 115 million years.
Russia, Amur Region, Mikhailovsky Pillars. Andesites - dark gray, greenish-gray rocks, with a massive, fluid texture. Porphyry phenocrysts up to 20%. Consist: andesine, hornblende, augite. Bulk - volcanic glass. Lower Cretaceous. Determination of absolute age - 115 million years.
Russia, Khabarovsk Territory. Massif quartz diorite. Intense impregnation of a fine ore mineral with a metallic sheen. Magnetite or ilmenite. Upper Cretaceous.
