GEO101 A4

5. form by the transformation of pre-existing rocks
8. igneous texture in which crystals visible to the naked eye are embedded in a matrix of aphanitic texture
10. texture of igneous rock with a high glass content
12. form by lithification of sediment
13. a gray fine grained volcanic rock consisting of plagioclase
15. the substance that makes up the universe
16. fine grained
18. formed from the solidification of magma
19. the smallest unit of an element

1. occurs within the plate far from any plate boundary
2. minerals with the same composition but different crystal structure
3. tendency of minerals to break along flat planar surfaces into geometries
4. the process that converts sediments into solid rocks
6. a dark coarse grained intrusive rock
7. most abundant mineral in the Earth's crust
9. coarse grained
10. a light colored coarse grained intrusive rock consisting primarily of quartz
11. crystals initially begin as them
14. tendency to break along other surfaces
17. a fine textured dark brown to black extrusive rock