ESC 1000 Lecture Notes - Lecture 5: Igneous Rock, Extrusive Rock, Flux Melting
Document Summary
Isotopes same element but with different number of neutrons and different mass. Crystal a solid with atoms bounded by flat surfaces that naturally grew as the mineral formed. Minerals naturally occurring solid formed by geologic processes inorganic definite chemical composition crystalline structure. Mineral formation solidification of a melt precipitation from a water solution diffusion through a solid the metabolism of organisms precipitation from a gas. Physical properties of minerals color luster streak cleavage hardness. Cleavage the tendency of a mineral to break along smooth planes. Intrusive igneous rock formed inside the earth; more of these. Extrusive igneous rock formed above the surface of the earth; less of these. Sources of earth"s heat left over from formation decay of radioactive elements melting caused by (magma formation) decrease in pressure addition of volatiles heat transfer melting occurs (magma formation) lower crust upper aesthenosphere. Decompression melting (definition) reduction in pressure creates magma in this way.
