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Montagnais Gabbro

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Journal Article
Published: 01 August 1995
Canadian Journal of Earth Sciences (1995) 32 (8): 1208-1220.
..., the syenite date gives an approximate age for both Nimish magmatism and ironstone deposition in the Schefferville zone. A date of ca. 2.65 Ga obtained from a Nimish trachyte in the same area indicates that zircons in the sample are xenocrysts. Farther east, at Howse Lake (Howse zone), a Montagnais plagioclase...
Journal Article
Published: 22 November 2018
Geochemistry: Exploration, Environment, Analysis (2019) 19 (4): 369-393.
... metavolcanic rocks that are in thrust contact with the Baby-Howse and Doublet zones in basement-involved thick-skinned tectonics (Rachel-Laporte zone). Voluminous c. 1.88 Ga metagabbro sills of the Montagnais suite intrude rocks of the Baby-Howse and Doublet zones; this assemblage makes up what...
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Journal Article
Journal: Economic Geology
Published: 01 May 2017
Economic Geology (2017) 112 (3): 675-692.
... Heaman et al. (1986) Cape Smith belt, Quebec Raglan Formation, gabbro sill 1887.0 + 39/–11 Wodicka et al. (2002) Expo-Ungava mafic-ultramafic intrusion 1882.7 ± 1.3 Randall (2005) 1 New Quebec orogen Montagnais gabbro sill U-Pb zircon TIMS 1884.0 +1.6/–2.6 Findlay et al...
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Journal Article
Journal: Geology
Published: 01 April 2000
Geology (2000) 28 (4): 323-326.
.... , Parrish , R.R. , Birkett , T.C. , and Watanabe , D.H. , 1995 , U-Pb ages from the Nimish Formation and Montagnais glomeroporphyritic gabbro of the central New Quebec orogen, Canada : Canadian Journal of Earth Sciences , v. v. 32 pp. 1208 ߝ 1220 . Gaina , C. , and Müller , R.D...
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Journal Article
Published: 27 November 2018
Journal of the Geological Society (2019) 176 (2): 209-224.
...-grained, roughly equigranular granitic rock that is locally aplitic or pegmatitic and, in a few cases, syenitic ( Morgan et al. 2016 ). On the basis of these data we estimate a c. 25–30% Kfs abundance, yet caution that the presence of common lower crustal rocks, such as gabbros (no Kfs), may impart...
FIGURES
Journal Article
Published: 01 January 2005
Journal of the Geological Society (2005) 162 (1): 111-124.
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Journal Article
Published: 17 September 2001
Canadian Journal of Earth Sciences (2001) 38 (9): 1313-1334.
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Journal Article
Published: 01 October 2005
American Mineralogist (2005) 90 (10): 1473-1499.
...-formations. From Klein (1983) . Fayalite is a major constituent of parts of the Biwabik and Gunflint Iron Formations that have been contact metamorphosed by the Duluth Gabbro Complex ( Bonnichsen 1969 ). Regionally metamorphosed Archean iron-formations in the Yilgarn Block of Western Australia also...
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Series: Investigations in Geophysics
Published: 01 January 1991
DOI: 10.1190/1.9781560802686.ch10
EISBN: 9781560802686
... and sedimentary rocks. A strong AEM trend consisting of five anomalies indicates the true extent of the mapped gabbro (Montagnais Group). Most likely, the AEM anomalies are due to saprolite developed over this rock type. The second HLEM profile ( Figure 59 ) confirmed the existence of two bedrock conductors...
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Journal Article
Published: 01 January 2006
Reviews in Mineralogy and Geochemistry (2006) 60 (1): 519-596.
... structures, which were buried by post-impact sediments almost immediately after formation (e.g., Chicxulub, Mexico; Montagnais, Canada; Puchezh-Katunki, Russia; Ries, Germany), and presumably have a nearly pristine form. They can, however, only be delineated by drill-hole and geophysical data, thus the exact...
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Journal Article
Journal: Economic Geology
Published: 01 May 2010
Economic Geology (2010) 105 (3): 467-508.
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