Igneous Rocks

Edit Answers
1234567891011121314151617181920212223242526
Across
  1. 2. a hard, dark, glasslike volcanic rock formed by the rapid solidification of lava without crystallization. Igneous rock
  2. 5. a rock formed by the crystallization of molten magma.
  3. 7. igneous texture than has large crystals embedded in a matrix of much smaller crystals
  4. 8. a pale fine grained igneous rock. The minerals that make up this rock are mainly quartz, sanidine, and plagiocase
  5. 12. magma that is out on earths surface
  6. 13. the size, shape, and distribution of the particles that collectively constitute a rock
  7. 14. group of igneous rocks indicating that the rock contains substantial dark silicate minerals and calcium rich plagiocase feldspar. Also known as basaltic composition
  8. 18. texture of igneous rocks where crystals are too small to be seen with unaided eye
  9. 19. a group of igneous rocks that is composed of almost entirely light colored silicates. Also called granitic composition
  10. 21. igneous rocks that contain small cavities called vesicles, which are formed when gasses escape from lava
  11. 22. igneous rocks that contain no crystals
  12. 23. the process of generating more than one rock type from a single magma
  13. 25. igneous rock formed when magma flows out onto earths surface Also called volcanic rock
  14. 26. texture of igneous rocks where crystals are big enough and almost equal in size and can be seen with the unaided eye
Down
  1. 1. ranking igneous silicate minerals by temperature they crystallize at
  2. 3. igneous rock texture resulting from the consolidation of individual rock fragments that are ejected during a volcanic eruption
  3. 4. group of igneous rocks that contain at least 25% dark silicate minerals. The other dominate mineral is plagiocase feldspar
  4. 6. explains how cooling influenced the Bowens reaction series
  5. 9. a dark green to black intrusive igneous rock composed of dark silicate minerals. Gabbro makes up a significant percentage of oceanic crust
  6. 10. a fine-grained igneous rock of mafic composition
  7. 11. molten rock found inside the earth
  8. 15. igneous rock with porphyritic texture, a conspicuously large crystal embedded in a matrix of finer grained crystals called the groundmass
  9. 16. rock that is formed below earths surface. Also called plutonic rock
  10. 17. a light colored, glassy vesicular rock that commonly has a granitic composition
  11. 20. a gray, fine-grained igneous rock, primarily of volcanic origin and commonly exhibiting porphyritic texture
  12. 24. this is a hard igneous rock that is made up of mostly quartz, mica, and feldspar. Used as building stone