 | | Journal (issue) | | sites; they are shown to be mullions in a mica-quartz-schist of distinctive mineralogy, for which radiometric...medium metamorphic grade. The majority A: mica-quartz-schists and highly micaceous quartzites; B: metasiltstones...discussed only after all three have been described. quartz-rich metasediments of low to fall into three...three closely-related sub-groups; — A. Mica-quartz-schists and micaceous quartzites Almost all the hones...HONESTONES (1) silt 137 Grey, lineated psammitic mica-quartz-schists (mullions) of fine sand to coarse grade |  | | Journal (article/letter/editorial) | | (1911) observed that, for multilayers within a quartz phyllite, the size of individual folds is related to...d). (a) Folded quartz vein in schists around Vale Figueiras, Portugal. (b) Folded quartz vein in sillimanite...the Doldenhorn nappe, Switzerland. (d) Extended quartz vein in grey calcite marble, Ugab region, northern...Fontainebleau quartz sand above. The PDMS represents the ductile part of the lithosphere, the quartz sand the...layers: brittle crust (quartz sand), ductile crust (silicone), brittle mantle (quartz sand) and ductile asthenosphere |  | | Report (volume) | | Mountains, New Mexico, and on the occurrence of Primary Quartz in certain Basalts, by Joseph Paxson Iddings. 1890...porphyry .......................... 2. Stretched quartz porphyry ............................ XVI. Fig...proving the secondary fracture of the inclosing quartz..................................................water-formed mass composed chiefly of fragments of quartz and feldspar, with the alteration products of the...which is in general made up almost completely of quartz fragments cemented by a siliceous matrix, takes |
|
