| GRD01W9S0 |
Folds
|
Very large sample of folded tremolite-talc (?)-carbonate schist. Well-foliated. |
New York |
0 |
Ritter 154, 14 R |
| GRD01WZS0 |
Folds
|
Large sample of folded chlorite-biotite-muscovite schist. Very well foliated, coarse-grained with nice crenulations. (Original label: M-146.) |
|
0 |
Ritter 154, 14 P |
| GRD01WZS1 |
Folds
|
Smaller sample of folded chlorite-biotite-muscovite schist. Very well foliated, coarse-grained with nice crenulations. (Original label: M-147.) |
|
0 |
Ritter 154, 24 I |
| GRD01X1S0 |
Folds
|
Well-developed foliation. Quartz-biotite-phologopite(?) gneiss. Small ptygmatic folds. |
New Zealand |
1 |
Ritter 154, 14 P |
| GRD01X4S0 |
Folds
|
Small quartz folds in fine-grained blue matrix. Blue: magnesioreibeckite (?), glaucophane (?). Original description: folded gneiss; blue schist facies? |
|
0 |
Ritter 154, 14 P |
| GRD01X4S1 |
Folds
|
Small quartz folds in fine-grained blue matrix. Blue: magnesioreibeckite (?), glaucophane (?). Original description: folded gneiss; blue schist facies? |
|
0 |
Ritter 154, 14 P |
| GRD01Y1S0 |
Folds
|
Medium-sized polished sample of gniess composed of biotite-quartz-garnet (minor). Ptygmatic folds of quartz. N30E 52 dip E20 plunge. |
|
0 |
Ritter 154, 14 P |
| GRD01YES0 |
Folds
|
Folded grey and white marble. Possibly relict folded bedding (?) from an impure limestone. Carbonate-biotite (black specks and layers). |
California |
1 |
Ritter 154, 14 P |
| GRD01YHS0 |
Folds
|
Fine-grained, finely banded marble with tight folds. Relict fossil (?) or porphyroblast. |
Darwin Area |
0 |
Ritter 154, 14 P |
| GRD020YS0 |
Folds
|
Quartz-mica-pyrite schist. Thin, well-formed, and bent banding. Cubic pyrite (rare). Very pronounced banding and hardness. Intense mylontization? |
Switzerland |
0 |
Ritter 154, 24 I |
| GRD020ZS0 |
Folds
|
Carbonate-biotite-quartz-amphibole-muscovite schist with folded laminae and ptygmatic folds. Melanocratic layers: biotite, carbonate, quartz. Leucocratic layers: carbonate, biotite, trace muscovite. Medium-grained quartz veins cutting across and along laminae. Marl protolith? Original description: Q-Bi gneiss with ptygmatic folds. |
|
1 |
Ritter 154, 14 P |
| GRD029LS0 |
Folds
|
Relict sandstone-limestone bedding that has been folded. The larger, grey beds are marble while the thinner beds are quartzite. One side of the sample is very weathered. Original label: folded intercalated sandstone-limestone. |
|
0 |
Ritter 154, 24 I |
| GRD029VS0 |
Folds
|
Banded, folded, and cut by quartz veinlets. Mainly cryptocrystalline materials (quartz, chlorite?) and relict soft-sediment structures. Banded hornfels? Original label: Serpentized gneiss. |
NW Corner LB Quad |
0 |
Ritter 154, 24 I |
| GRD029YS0 |
Folds
|
Very well-foliated (laminated), fine-grained schist. Quartz-riebeckite-amphibole-chlorite(?) schist. Nice differential slip microstructure. Original label: metasomatized serpentine schist. |
|
1 |
Ritter 154, 24 I |
| GRD02BSS0 |
Folds
|
Fine-grained muscovite schist. Slight folds and crenulations. Slickensides? |
Alps |
0 |
Ritter 154, 14 P |
| GRD02BWS0 |
Folds
|
S-folded gneiss. Phlogopite-biotite-quartz-pyrite (trace). Original description: folded phologopite gneiss. |
|
0 |
Ritter 154, 14 P |
| GRD02BXS0 |
Folds
|
Fine-grained gneiss with ptygmatic folds. Very nice example of folds. |
|
0 |
Ritter 154, 14 P |
| GRD02EES0 |
Folds
|
Folded carbonate. Some layers are visible, one of which contains a small amount of mica. |
|
0 |
Ritter 154, 24 I |
| GRD02OAS0 |
Folds
|
Two very large pieces of folded, bedded sample of marble and quartzite. The more granular beds are marble whereas the darker, more finely-grained beds are quartzite. Original description: Marble. |
California |
2 |
Ritter 154, 24 I |
| GRD02OBS0 |
Folds
|
No hand sample. Thin section only. Original description: Blastomylonite - fault zone material showing effects of extreme cataclasis and recrystallization. Note the layering showing different extents of granulation. |
California |
1 |
Ritter 154, 29 A |
| GRD02UNS0 |
Folds
|
Orocopia Schist. Greenschist layered black and green. Isoclinal folds(?). |
California |
2 |
Ritter 154, 14 P |
