EOS-0002 Lecture Notes - Lecture 1: Euhedral And Anhedral, Hematite, Pyrite
20 May 2016
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Document Summary
Minerals - naturally occurring, inorganic, solid, specific composition, crystalline. Mineral growth - crystallization of grains, grow from template : cooling of liquid, precipitation from saturated solution. Rocks - naturally occurring minerals grains and other materials. Igneous rocks - from cooling magma: course - slowly cooling (granite, distinct crystals allowed from migration) 2: glass - quenching very rapid (obsidian, volcanic glass) fine - quickly cooling. Shapes: plutons -> sills (squeezed between sedimentary layers), dikes (trough or crack) Shapes: lava -> ash (can be droplets of glass, may be molten or dry) Weathering - chemical (decomposition) or physical (disintegration) at earth"s surface smaller particles, new minerals, cations + anions now in solution exposure to surface temperature and pressure. Clastic sedimentary rocks - particles (clasts) eroded from other rocks, noninterlocking, often rounded particles: gravel - conglomerate (>2 mm, sand - sandstone (. 0625 - 2, silt - siltstone (. 002 - . 0625, clay - shale, claystone (
