Carbonate metamorphism time

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Across
  1. 2. large euhedral crystal in a meta rock, finer grained matrix
  2. 4. in hydrothermally altered quartz diorite, 15-20mm; KAl2(Si3Al)O10(OH)2
  3. 5. metamorphism resulting from mechanical deformation as in a shear zone. Restricted to narrow zone
  4. 7. high Fe, Mg, Ca
  5. 12. protolith with hi Si, Na, K, Al
  6. 13. in hydrothermally altered quartz diorite, 15-20mm; amphibole, Ca2(Mg,Fe2+)5[Si8O22](OH,F)2
  7. 16. metamorphosed rocks where carbonate component is predominant
  8. 21. slatey cleavage foliation
  9. 22. develops in the carbonate rocks outside the contact
  10. 23. metamorphic rocks characterized by an abundance of hydrous minerals
  11. 25. shows no foliation with large grain size, visible with hand lens
  12. 26. metasomatism, close but no contact with intrusion, shale or sandy shale protolith
  13. 27. metamorphic rocks that show none of their own crystal faces
  14. 29. metamorphosed, nearly pure carbonate
  15. 31. in hydrothermally altered quartz diorite, 15-20mm; Ca2Al3(Si2O7)(SiO4)O(OH)
  16. 32. CaSiO3
  17. 34. shistose folation
  18. 37. rock which has more Li than the protolith
  19. 38. close to dolomite contact; Mg2SiO4
  20. 39. has its own zone 5-10mm from dolomite contact; MgCaSi2O6
  21. 40. metamorphic rocks bounded by their own crystal faces
Down
  1. 1. contact metamorphism & metasomatism, shale protolith
  2. 3. metasomatism, farthest from intrusion, shale or sandy shale protolith
  3. 6. contact metamorphism & metasomatism, sandstone protolith
  4. 8. protolith with high Ca, Mg, CO2
  5. 9. banded texture without distinct foliation
  6. 10. phyllitic foliation
  7. 11. Alteration of chemical composition via interaction with fluids
  8. 14. metasomatism, limestone protolith, silica-rich rocks or fluids
  9. 15. rocks examples are diopside, Ca-amphiboles, vesuvianite, epidote, wollastonite
  10. 17. develops within a plutonic rock
  11. 18. example reaction: calcite + quartz => wollastonite + CO2
  12. 19. in silica-enriched zone; NaAlSi3O8 – CaAl2Si2O8
  13. 20. a rock that shows no foliation with small grain size
  14. 24. SiO2
  15. 28. very high Mg, Fe, Ni, Cr
  16. 30. example reaction: pyrophyllite => And/Ky + quartz + water
  17. 33. SiO2, in silica-enriched zone
  18. 34. protolith with high Al, K, Si
  19. 35. double decomposition, water is involved
  20. 36. cataclastic metamorphic rocks that are produced along shear zones deep in the crust; streaky and layered