NOTE; Not all parent rocks are capable of forming index minerals. However, we can usually determine the zone the rock formed in by looking at the surrounding sedimentary parent rocks that have been metamorphosed and produced index minerals. So in the table when looking at metamorphic grade Index Minerals for rocks that do not produce index minerals just put the index mineral they would produce if they could.
Metamorphic Data Sheet | ||||
Sample | Parent Rock | Metamorphic Process | Metamorphic Rock | Index Mineral |
1 | Granodiorite | Barrovian | Gneiss | (Garnet) Amphibolite |
2 | Carbonate 2 | Barrovian | Marble | Not Applicable |
3 | Basalt | Barrovian | Greenschist | NA (Chlorite zone) Greenschist |
4 | Shale 2 | None (contact) | Un (or Hornfels) | None |
5 | Shale 2 | Barrovian | Slate/Phyllite | Chlorite Greenschist |
6 | Coal | Barrovian | Graphite | Not Applicable |
7 | Basalt | None | Unchanged | None (outside chlorite isograd) |
8 | Shale 1 | Contact | Hornfels | Not Applicable |
9 | Carbonate 1 | Contact (or hydro) | Hornfels | Not Applicable |
10 | Quartz wacke | Contact | Hornfels | Not Applicable |
11 | Quartz wacke | Contact | Hornfels | Not Applicable |
12 | Shale 1 | None | Unchanged | Not Applicable |
13 | Shale 1 | Barrovian | Slate/Phyllite | Chlorite Greenschist |
14 | Lithic wacke | Barrovian | Schist | Biotite Greenschist |
15 | Shale 2 | Barrovian | Schist | Garnet Amphibolite |
16 | Basalt | Barrovian | Amphibolite | NA (garnet zone) Amphibolite |
17 | Shale 2 | Barrovian | Schist (to gneiss) | Staurolite Amphibolite |
18 | Lithic wacke | Barrovian | Schist/Gneiss | Staurolite Amphibolite |
19 | Quartz sandstone | Barrovian | Quartzite | NA (garnet zone) |
20 | Shale 2 | Barrovian | Schist | Garnet Amphibolite |
21 | Shale 1 | Barrovian | Gneiss | Kyanite-Sillimanite Granulite |
22 | Granodiorite | Barrovian | Gneiss | NA (Kyanite zone) Granulite |
23 | Shale 1 | Barrovian | Schist | Staurolite Amphibolite |
24 | Shale 1 | Barrovian | Gneiss | Kyanite Granulite |
25 | Basalt | Barrovian | Granulite | NA (kyanite zone) Granulite |
26 | Arkose | Barrovian | Gneiss | Kyanite Granulite |
27 | Lithic wacke | Barrovian | Schist | Staurolite Amphibolite |
28 | Shale 1 | Barrovian | Schist | Garnet Amphibolite |
29 | Shale 1 | Barrovian | Schist | Biotite Greenschist |
30 | Quartz wacke | None | Unchanged | None |