Northern Labrador lies within the Canadian Shield, its bedrock being generally Precambrian in age or, more accurately, Archean in the area covered by this study. (Map 2) (Piloski 1954). Highly metamorphosed paragneisses and gneisses of granitic composition are the major rock-types, but granite and quartzites occur as well. The bedrock is generally coarse grained and weathered into a very rough surface, on which striae are usually absent. In the areas of gneiss, the local variation in petrography is large, as quartz-inclusions and inclusions of granites are numerous (Ill. 80). Because of this, the identification of erratics is extremely difficult, and in no case was the source-area of a suspected erratic boulder determined.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.113704 |
| Date | January 1962 |
| Creators | Löken, Olav. H. |
| Contributors | Bird, J. (Supervisor) |
| 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 | Doctor of Philosophy. (Department of Geography.) |
| 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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