| Title | Comment | Keywords |
|---|---|---|
| Metamorphosed Claystone | 18:49 - 20:08 (01:19) / 2.0 MB | "Douglas M. Morton", metamorphism, claystone, "sedimentary rock", alumina, "regional metamorphism", heat, slate, mineral, temperature, pressure, foliation, layering, phyllite, "linear structure", mica, crystal, garnet, "metamorphic grade", gneiss |