Geology Chapter 2.2 0.0 / 5 ? Geologyigneous rocks A2/A-levelOCR Created by: abbbywCreated on: 26-12-17 14:26 Flow Banding formed by friction as the magma or lava slows down near an interface, aligning the minerals as it moves 1 of 8 Conchoidal a fracture which results in a curved surface 2 of 8 Vesicular a textural term for a rock containing vesicles. Vesicles were bubbles of gas which came out of solution as a result of pressure release 3 of 8 Porphyritic a texture where large crystals (phenocrysts) are completely surrounded by smaller crystals 4 of 8 Equigranular when crystals in an igneous rock are of approximately the same size 5 of 8 Amygdaloidal where there are large vesicles that have been filled with a secondary mineral 6 of 8 Lava molten rock that cools at the surface 7 of 8 Ophiolites sections of earth's oceanic crust that have been tectonically moved (obducted) onto continental crust 8 of 8
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