Basaltic Andesitic Rhyolitic SiO SiO2 SiO 2 Al2O3MgO +Cao eo+ Fe203 LNa2O+K2O All other solid components The three main magmas
The three main Magmas
Basaltic magmas a Basaltic magmas are erupted by approximately 80 percent of volcanoes worldwide(the seafloor worldwide is mostly basalt) a Magma from Hawaiian volcanoes such as Kilauea and mauna loa is basaltic a The entire island of iceland is basaltic
Basaltic Magmas ◼ Basaltic magmas are erupted by approximately 80 percent of volcanoes worldwide (the seafloor worldwide is mostly basalt). ◼ Magma from Hawaiian volcanoes such as Kilauea and Mauna Loa is basaltic. ◼ The entire island of Iceland is basaltic
Andesitic and rhyolitic Magmas Andesitic magmas are about 10 percent of the total magma Magma from Mount St Helens in Washington State and Krakatau in Indonesia is usually andesitic. Rhyolitic magmas are about 10 percent of the total magma Magmas erupted from volcanoes that once were active at Yellowstone Park are mostly rhyolitic
Andesitic and Rhyolitic Magmas ◼ Andesitic magmas are about 10 percent of the total magma. ◼ Magma from Mount St. Helens in Washington State and Krakatau in Indonesia is usually andesitic. ◼ Rhyolitic magmas are about 10 percent of the total magma. ◼ Magmas erupted from volcanoes that once were active at Yellowstone Park are mostly rhyolitic
very viscous magma slow moving, from Kilauea olcano in Hawaii in 1989
Very viscous magma slow moving, from Kilauea Volcano in Hawaii in 1989
Fast flowing lava. low viscosity basaltic lava. Havaii in 1983
Fast flowing lava, low viscosity basaltic lava, Havaii in 1983