ESS105H1 Lecture Notes - Lecture 4: Igneous Rock, Oceanic Crust, Metamorphic Rock
Document Summary
Focus on the section numbers mentioned on the slide that correspond to the textbook. 5. 1,5. 2, 5. 4, 5. 5, 5. 6, 5. 7, 5. 8, 5. 12, 5. 13 figure 2. 13!!!!!! Any rock made of magma is an igneous rock. Basalt magma looks like a runny river. Two types of basalt a"a and pahoihoi. Freeze in geologic terms just means it cools down enough to become solid: a"a is a sharp blocky rock that would hurt your feet to walk over, ropey texture, would not hurt your feet. How do rocks melt reading the graph. Far left is solid rock far right is liquid. Direct melting, where the plate is moving over a hot magma plume (hawaiian islands and the pacific plate) Melting the mantle as a result of low pressure at mid ocean ridges. Tousseau wilsons hot spots (the above are his two theories) Intruding igneous rocks are also known as plutonic. Cool slowly and form medium to coarse crystals (phaneritic)
