EESA06H3 Lecture Notes - Lecture 8: Labradorite, Metamorphic Rock, Plate Tectonics
Document Summary
Lecture 8 (rocks and minerals: clues to ancient enviro. Has iridescence -> if you change the position, it seems to reflect the light. Key to variation of minerals is hot water. Exhibits where you can buy minerals, collect them, etc. Not just rocks: what do they tell us about paleoenvironments ? nvironments) evolved. Found out that the falls were receding about 1m/year. Earth is a lot older than anyone was considering. Rocks have taken a long time to deposit. Can figure out how they were deposited and what types of rocks they are. Rock: a naturally formed, consolidated material composed of grains of one or more miner. Mineral: a naturally occurring, inorganic, crystalline solid that has a specific chemical composition. Can pick them up, can break them, and a prescribed chemistry. The most important group are silicate minerals containing silicon and oxygen and accounts. Continental crust -> low density, large amounts of silica.
