BIOL 1001 Chapter : BIOL 1001 Unit 4 Chapter 27
Document Summary
Melts => magma (melt underground) or lava (melt at surface) Needed to be about 1100 650o c hot. Intrusive => under surface, cools out of sight. Chapter 4: decompression melting, flux melting, conduction melting. Classification: tectonic setting for igneous rocks, rocks, igneous rocks, how do we melt rocks, components of melt (magma, 4 major types of melt (magma) Lighter in weight as well: magma, felsic. Occurs at hot spots, mid ocean ridges, continental rifts. Add volatiles => any type of gassy substance (water, steam, co2) Aluminum, potassium, sodium, calcium, magnesium, iron are all present. Some gas can be present => dry magma little to no gas present/ wet magma equal to or more than 15% gas. Flux melting is usually associated with wet magma which has a lot of water vapor, co2, sulfur, nitrogen, and hydrogen. Melted rock is less dense (buoyancy force) Weight of overlying crust: how does magma move, reasons, speed of magma, cooling rate of magma.
