Igneous rocks

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Across
  1. 3. coarse-grained, intrusive equivalent of basalt
  2. 4. when magma reaches the surface it is
  3. 8. another silica-rich volcanic rock that exhibits a glassy and also vesicular texture
  4. 10. igneous rocks composed almost entirely of dense ferromagnesian minerals
  5. 11. the matrix of smaller crystals
  6. 13. the intrusive equivalent of andesite
  7. 16. rocks that contain at least 45 percent dark silicate minerals and calcium-rich plagioclase feldspar
  8. 18. rocks with a composition between granitic and basaltic rocks
  9. 20. and texture in which the crystals and large enough to be distinguished by the naked eye
  10. 25. a medium-gray extrusive rock
  11. 26. The settling of the earlier formed minerals that are denser than the liquid portion to the bottom of the magma chamber
  12. 27. a rock formed by the crystallization of molten magma
  13. 28. geologists use what to describe the size, shape, and arrangement of the mineral grains that make up a rock
  14. 29. rocks that contain nearly spherical openings called vesicles
  15. 30. illustrates the relationships between magma and the minerals crystallizing from it during the formation of igneous rocks
Down
  1. 1. the formation of one or more secondary magmas from a single parent magma
  2. 2. a rock that is almost completely covered in light-colored silicates
  3. 5. the large crystals in porphyritic rocks
  4. 6. composed mostly of the minerals olivine and pyroxene
  5. 7. the extrusive equivalent of granite and is composed of light-colored silicate minerals
  6. 9. when magma solidifies at depth
  7. 12. coarse-grained intrusive igneous rock that forms where large masses of silica-rich magma slow solidify at depth
  8. 14. a very dark green to black, fine-grained volcanic rock composed primarily of pyroxene, olivine, and plagioclase feldspar
  9. 15. texture resulting from the consolidation of individual rock fragments
  10. 17. common type of volcanic glass
  11. 19. most often generated by melting rocks in Earth’s mantle
  12. 21. texture that contains no crystals
  13. 22. when molten rock solidifies at the surface it is called
  14. 23. a texture in which the crystals are too small for individual minerals to be distinguished with the naked eye
  15. 24. a texture in which large crystals and made up of smaller crystals