GLY 1010 Lecture Notes - Lecture 38: Sunset Crater, Cinder Cone, Lava Dome
Document Summary
This type of volcanic rock is intermediate in composition between basalt and rhyolite. A particular type of mudflow or debris flow composed of mixture of pyroclastic material and water, which flows rapidly down volcanic sloped with tremendous force, is called a. Capulin volcano in new mexico and sunset crater in arizona are both scoria cones. This style of eruption involves rhyolitic or andesitic magmas and usually begins with very powerful explosive eruptions of incandescent pyroclastic flows capable of sweeping away even the strongest structures. This type of volcanic rock is often buoyant enough to float on seawater pumice. Formation of this feature occurs after the explosive phase of an eruption when the magma becomes depleted in volatiles or gases. With the reduction of gas, the viscous lava rises out of the vent to produce this feature in the summit crater lava dome. Which igneous rock type is produced at spreading ocean ridges.
