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Frood-Stobie Dike

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Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1419–1446.
... greatest at the Copper Cliff and Frood-Stobie offset dikes, the Worthington offset dike is located below a thinner melt sheet, and the Manchester and Foy offset dikes developed beneath very thin portions of the melt sheet. † Corresponding author: e-mail, lightfootpc@inco.com Economic Geology...
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Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1447–1458.
... ) and the Kirkwood, Frood-Stobie, and Vermilion dikes ( Scott and Spray, 2000 ) are hosted entirely within Sudbury breccia ( Grant and Bite, 1984 ), whereas the Hess offset dike ( Wood and Spray, 1998 ) and the Copper Cliff offset dike ( Cochrane, 1984 ) are predominantly in direct contact with the country rocks...
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Journal Article
Journal: Economic Geology
Published: 01 May 2020
Economic Geology (2020) 115 (3): 505–525.
... by Lightfoot, 2016 , and references therein). As much as 50% of the total metal resources of the Sudbury mining district (including Frood-Stobie), however, are not hosted by the central igneous complex (termed main mass) but by surrounding impact melt-derived dikes ( Keays and Lightfoot, 2004 ). These so...
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Journal Article
Journal: Economic Geology
Published: 01 March 2004
Economic Geology (2004) 99 (2): 365–376.
...-rich ore, as for example described at the Frood mine in the Sudbury Igneous Complex by Hawley (1965) . It is interesting to speculate whether a buildup of pressure during crystallization, as indicated by the textures in the sulfide blebs in the dike from the Uruguayan dike swarm, could occur on a much...
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Journal Article
Published: 01 January 2001
Exploration and Mining Geology (2001) 10 (1-2): 111–124.
... expression of the 100 ore-body (Fig. 4 ). The western edge of the dike is in contact with the Creighton granite throughout the field area, but contacts both metavolcanic and metasedimentary rocks of the Stobie Formation and the Creighton granite on the eastern side. The footwall and hangingwall rocks...
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Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1541–1562.
...) The root mean squared deviations of vitric Onaping Formation from mean offset dike compositions have been sorted in Table 3 . With one exception (the Frood offset dike), there is a consistent increase in mafic constituents and decrease in felsic constituents with increasing overall dissimilarity between...
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Journal Article
Journal: Economic Geology
Published: 01 November 2016
Economic Geology (2016) 111 (7): 1705–1729.
... along strike from the west end of the Frood Stobie Ni-Cu-PGE ore deposit, hosted within a 45- × 0.5-km, arcuate breccia zone termed the South Range breccia belt ( Scott and Spray, 2000 ; Ames and Farrow, 2007 ). The subconcentric Manchester offset dike, situated 5 km south of the Sudbury Igneous...
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Journal Article
Journal: Economic Geology
Published: 01 December 2001
Economic Geology (2001) 96 (8): 1855–1875.
...-wide breccia belts containing discontinuous lenses of quartz diorite (e.g., the Frood-Stobie breccia belt; Souch et al., 1969 ; Scott and Spray, 1999 ) and the more continuous dikes of quartz diorite (e.g., the Manchester and Hess offsets; Grant and Bite, 1984 ; Lightfoot et al., 1997c ; Wood...
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Journal Article
Journal: Economic Geology
Published: 01 November 2001
Economic Geology (2001) 96 (7): 1645–1670.
... of these fluids took place under litho- and hydrostatic conditions at about a 4- to 6-km depth. This hydrothermal activity is related to a regional tectonothermal event during emplacement of northwesterly oriented Sudbury dikes (1.24 Ga). Regional-scale fluid inclusion studies along the North Range highlight...
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Journal Article
Journal: Economic Geology
Published: 01 September 2017
Economic Geology (2017) 112 (6): 1543.
... to support the descriptions and arguments. Chapter 4 describes the ore deposits at Sudbury in detail, providing context and background to the processes of ore formation. Comprehensive data are presented for all of the major nickel deposits, most notably the giants that include Frood-Stobie, Creighton...
Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1459–1470.
... in the base of the Sudbury Igneous Complex that extends southward and downward into the footwall (Lower Proterozoic Creighton Granite and metasedimentary-metavolcanic units of the Stobie Formation) for approximately 2.5 km and then narrows abruptly into a steeply dipping dike. The quartz diorite dike...
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Journal Article
Journal: Geology
Published: 01 November 2006
Geology (2006) 34 (11): 901–904.
...: 10.1130/0016-7606(1997)109<0268:DOAMCO>2.3.CO;2 . Eastman , R.J. , 1999 , Idrisi32 guide to GIS and image processing, Volume 1 : Worcester, Massachusetts , Clark University , 193 p. Inco Ltd , 2001 , The Frood-Stobie complex closure plan : Ontario, Canada , Ontario Division...
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Journal Article
Journal: Economic Geology
Published: 01 November 2002
Economic Geology (2002) 97 (7): 1487–1508.
... (as well as in the offset dikes). Published descriptions of ore zonations and mineral banding at various locations around the Sudbury Igneous Complex appear to support this suggestion ( Hawley, 1965 ; Souch et al., 1969 ; Abel et al., 1979 ; Hoffman et al., 1979 ) F ig . 17. Atomic Ni/S vs. Cu/S...
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Journal Article
Journal: Economic Geology
Published: 01 June 2015
Economic Geology (2015) 110 (4): 1125–1135.
...), whereas other offsets are less heavily mineralized. The footwall rocks of the Sudbury Igneous Complex are heavily brecciated; the largest of these belts of breccia is termed the South Range breccia belt, which contains the Frood-Stobie orebody. The Complex is overlain by a series of breccias and melt...
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Journal Article
Journal: Economic Geology
Published: 01 August 2008
Economic Geology (2008) 103 (5): 1057–1077.
..., Cu Ontario Mineral Deposit Inventory     121 Cameron mine (misnomer) Ni Ontario Mineral Deposit Inventory     122 Blezard-Val Caron Cu, Pb, Zn Ontario Mineral Deposit Inventory     123 Little Stobie mine Ni, Cu, PGE Ames et al., 2003     124 Frood mine Ni, Cu, PGE Ames et...
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Journal Article
Journal: Economic Geology
Published: 01 June 2019
Economic Geology (2019) 114 (4): 599–612.
... deposits ( Morrison, 1984 ; Rousell et al., 2003 ), such as the Frood-Stobie, the economically most important deposit mined in the Sudbury mining camp. Despite the detailed variations in the styles of mineralization at Sudbury ( Lightfoot, 2017 ), all Cu-Ni-Co and precious metal deposits in Sudbury...
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Journal Article
Journal: Economic Geology
Published: 01 September 2010
Economic Geology (2010) 105 (6): 1071–1096.
... deposits from the North Range (e.g., Strathcona: Li and Naldrett, 1993 ). At Creighton, there is also a weakly mineralized quartz diorite “failed offset” dike that intrudes for several hundred meters into the footwall rocks and also precious metal enrichment (low sulfide, high Pt, Pd style) in some...
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Journal Article
Journal: Economic Geology
Published: 01 May 2017
Economic Geology (2017) 112 (3): 569–590.
.... The Sudbury Structure is the preserved relic of a 1.85 Ga impact basin ( Dietz, 1964 ). It consists of the elliptical-shaped Sudbury Igneous Complex and associated radial and concentric offset dikes; impact fall-back breccias and volcanic rocks of the Onaping Formation; crater infill sedimentary sequences...
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Series: Special Publications of the Society of Economic Geologists, Special Publications of the Society of Economic Geologists
Published: 01 January 2012
DOI: 10.5382/SP.16.20
EISBN: 9781629490410
... quartz diorite (IQD) dikes, inclusion-rich norite (sublayer), brecciated footwall rocks (Footwall Breccia), and pseudotachylitic to cataclasitically brecciated footwall rocks (Sudbury Breccia) Disseminated to semimassive ores within IQD, disseminated to semimassive ores within Sublayer and Footwall...
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Journal Article
Published: 09 November 2017
Canadian Journal of Earth Sciences (2018) 55 (3): 230–240.
... ; e.g., Hess and Manchester), ( ii ) discontinuous or breccia-hosted Offset Dykes characterized by isolated pods of QD within Sudbury Breccia (e.g., Frood Stobie and MacLennan), and ( iii ) radial Offset Dykes radial to the current outcrop of the SIC (e.g., Pele, Copper Cliff, Worthington, Ministic, Foy...
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