The evolution of the Baie Verte Lineament, Burlington Peninsula, Newfoundland ...

• Main Author: Kidd, William
• Format: Thesis
• Language: English
• Published: Apollo - University of Cambridge Repository 1974
• Subjects: Baie Verte; Newfoundland
• Online Access: https://dx.doi.org/10.17863/cam.15954; https://www.repository.cam.ac.uk/handle/1810/243629

Notes for the reader. Thin sections and corresponding rock samples used for this study are deposited in the Harker collection of the Department of Mineralogy and Petrology, University of Cambridge. (Catalogue no. 33, p. 251-253, 255- 283; serial numbers 110403-110456, and 110476-110990). The magnification quoted in captions to photomicrographs is the true scale of the print to the thin section. The prints are about 85 X 57 mm., and their longest side therefore represents about 8.5, 3.4, 2.1 and 0.85 mm. for magnifications of X 10, X 25, X 40 and X 100 respectively. The camera lens cap seen in photographs of outcrop surfaces is 45 mm across. ... : An area measuring about 5 km by 30 km, of the relatively well-exposed central part of the Baie Verte Lineament, has been mapped in detail. Two major rock divisions are recognised by their differing structural and metamorphic histories. A terrain of psammitic, semipelitic and mafic schists borders the western side of the Lineament. These rocks (part of the Fleur de Lys Supergroup) are in upper greenschist to epidote-amphibolite metamorphic facies, and are affected by a polyphase deformation sequence. They are intruded by post-kinematic granite and tonalite. A large, generally unfoliated, granodiorite (Burlington Granodiorite) borders the eastern side of the Lineament. Outside the map area, it is seen to be either a pre- or early syn-kinematic intrusion into Fleur de Lys schists. The Baie Verte Lineament consists, in the mapped area, of two adjacent narrow-parallel belts; to the west the Baie Verte Group of uncertain (?Arenigian) age, and to the east the early Devonian Mic Mac Lake Group. Large lensoid ...