* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Volcanoes - rialto.k12.ca.us
Survey
Document related concepts
Axial Seamount wikipedia , lookup
David A. Johnston wikipedia , lookup
Llullaillaco wikipedia , lookup
Mount Garibaldi wikipedia , lookup
Mount Meager massif wikipedia , lookup
Mount Pinatubo wikipedia , lookup
Mount Pleasant Caldera wikipedia , lookup
Nevado del Ruiz wikipedia , lookup
Types of volcanic eruptions wikipedia , lookup
Cascade Volcanoes wikipedia , lookup
Mount Edziza volcanic complex wikipedia , lookup
Mount Vesuvius wikipedia , lookup
Mount St. Helens wikipedia , lookup
Shield volcano wikipedia , lookup
Silverthrone Caldera wikipedia , lookup
Transcript
Volcanoes * There are 2 (main) kinds of Volcanoes 1. Steep sloped with violent (explosive) eruptions 2. Gentle sloped with voluminous lava flows Mount Fuji, Japan Steep Sloped Violent/Explosive • Composite Cone, Stratovolcano – Large, nearly symmetrical formed from layers of both lava and pyroclastic materials. Gas rich magma of andesitic composition, Dangerous, viscous lava flows, mostly located in the “Ring of Fire”. • Mt. Fuji, Mt. St. Helens • Cinder Cone – Composed of loose pyroclastic material and usually form from a single eruption. Short life and are usually smaller 30-300 meters. • Paricutin Gentle Sloped voluminous lava flows • Shield volcano – broad, slightly dome-shaped. Most have grown from the deep-ocean floor to form islands. Form from the accumulation of fluid basaltic lavas • Hawaiian islands, Kilauea, Iceland Factors that determine volcanic eruption type a. Amount of dissolved gases in the magma b. Temperature of the magma c. Composition of the magma