Across
- 3. pyroclastic fragments that are between 2-64 mm diameter
- 4. This is critical to melting of the asthenosphere at subduction zones
- 6. a concordant intrusive body, typically of viscous magma with an arched roof and flat floor
- 8. who came up with the rules that predict the crystal structures of ionic compounds?
- 11. the texture describing a rock that has visible plagioclase grains up to 1cm in length in an aphanitic matrix
- 12. Difference of the maximum and minimum indices of refraction in an anisotropic material
- 13. because of their low density, volatiles will concentrate in the _____ part of a shallow magma chamber
- 15. undifferentiated meteorites thought to best represent the primitive earth mantle
- 17. an adjective describing rocks that are made up primarily of silicate minerals that are light-colored and relatively silica-rich
- 18. This igneous rock is made up of mostly plagioclase and clinopyroxene
- 19. the rigid layer above the asthenosphere
Down
- 1. This decreases with increasing temperature, increasing crystallization and increasing SiO2 content
- 2. a very coarse-grained igneous rock characterized by large, interlocking crystals, often exceeding 1 cm in size
- 5. normal faulting and rift valleys are common at this type of plate boundary
- 7. This type of eruption is characterized by a sustained vertical column of ash that can reach 45 km into the stratosphere
- 8. the texture of a rock in which the majority of crystals are visible to the naked eye
- 9. the proportion of the material mined that is the actual ore mineral (or elemental metal) to be extracted from it expressed as a percentage
- 10. a lithium aluminum mineral (LiAlSi2O6) that's a key source of lithium, used in ceramics, glass, and especially for producing lithium chemicals like lithium carbonate and hydroxide for batteries
- 14. This is the typical Coordination number for Silica ions
- 16. boundary between crust and mantle