Metamorphic Rocks

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Across
  1. 2. – Common high-grade metamorphic rock
  2. 3. – Hard, coarse-grained, hydrothermally altered metamorphic rocks
  3. 5. – Hard, compact variety of coal
  4. 8. – Talc-bearing metamorphic rock – Essentially a talc schist
  5. 10. – series of contact metamorphic rocks that have been baked and indurated by the heat of intrusive igneous masses.
  6. 11. – Glassy, or very fine-grained, rock type – A glass formed by melting within a fault via friction
  7. 14. – Nepheline syenite gneiss
  8. 16. – Type of metamorphic rock – a metamorphosed limestone
  9. 17. – A metamorphic rock containing mainly amphibole and plagioclase
  10. 19. – Metamorphic rock – A metamorphic rock formed by shearing
  11. 20. – Rock type – A rock whose fabric reflects the history of its deformation
  12. 21. – A high pressure metamorphic rock containing talc and kyanite
  13. 23. – Mixture of metamorphic rock and igneous rock
  14. 24. – Rock found at geological faults – A rock formed by faulting
  15. 26. – Hard, non-foliated metamorphic rock which was originally pure quartz sandstone – A metamorphosed sandstone typically composed of >95% quartz
  16. 27. – Rock formed by hydration and metamorphic transformation of olivine
Down
  1. 1. – A metamorphic rock with a protolith of quartz-rich (sandstone) sedimentary rock
  2. 4. – Class of high-grade medium to coarse grained metamorphic rocks
  3. 6. – A type of hornfels found in the Scottish Highlands
  4. 7. – Metamorphic rock – A metamorphic rock with a protolith of clay-rich (siltstone) sedimentary rock
  5. 9. – Metamorphic rock – A mafic metamorphic rock dominated by green amphiboles
  6. 12. – Type of foliated metamorphic rock – A low grade metamorphic rock composed mostly of micaceous minerals
  7. 13. – Metamorphic rock - A low grade metamorphic rock formed from shale or silts
  8. 15. – A dense metamorphic rock formed under high pressure
  9. 18. – Type of metavolcanic rock
  10. 22. carbonate – A metamorphosed ultramafic rock with talc as an essential constituent; similar to a serpentinite
  11. 25. – Easily split medium-grained metamorphic rock
  12. 27. – Rock consisting partly of melted material formed during an impact event – A rock formed by partial melting during a meteorite impact