ESS105H1 Lecture Notes - Lecture 4: Igneous Rock, Metamorphic Rock, Continental Crust
Document Summary
Used paleo magnetism, linear island chains and gps measures to demonstrate tectonic plate movements. Bonding affects the strength of minerals and cleavage directions formation of linear island chains. Light blue to dark blue = continental shelf. 3 types of rocks igneous rocks - from by crystallizing from magma - magma is molten rock. 1: sedimentary rock - form from other existing rock, form by consolidtino of sediment, metamorphic rock - form when pre-existing rocks change their texture, mineralogy or composition as a result of high temperatures and/or pressures. Igneous rock from when magma cool sand solidi es. Extrusive or volcanic rock form when magma solidi es at the earth"s surface (lava) Texture refers to size, shape, arrangement of grains or other constituents within a rock. Extrusive igneous rock cool quickly at or near earth surface and are typically ne-grained. Intrusive cool slowly deep beneath earth surface and are typically coarse-grained. All crystals large enough to see without microscope.
