Two spherical undulatory quartz samples from Pennsylvania and Labrador were studied by optical and x-ray methods. Optical studies of undulatory quartz with a two-axis goniometer showed that they have a larger range of undulatory extinction with a large standard deviation. The undulatory range is proportional to the stress and to the sample size. Tne undulatory extinction in quartz is due to misorientation of the crystallites in the crystal. From x-ray precession photographs it was observed that undulatory quartz produces diffuse spots elongated along the Debye-Scherrer rings. The size of the spots increases linearly with increasing radius of the Debye-Scherrer ring. When the elongation of the spots on a-axis and c-axis precession photographs were compared, spots in the c-precession photograph were more elongated. Therefore, it was concluded that there are more dislocations along a-axis in the sample. Non-symmetrical density distribution of an x-ray topography of a spot was observed. [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.116592 |
| Date | January 1964 |
| Creators | Nakashiro, Masayuki. |
| Contributors | Frueh, A. J. (Supervisor), Kranck, E. H. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science. (Department of Geological Sciences. ) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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