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A mantle plume origin for the Palaeoproterozoic Circum-Superior Large Igneous Province T. Jake R. Ciborowskia,b,⇑, Matthew J. Miniﬁeb, Andrew C. Kerrb, Richard E. Ernstc,d, Bob Baragare, Ian L. Millarf a School of Environment and Technology, University of Brighton, Brighton BN2 4GJ, UK bSchool of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff. The Circum-Superior Belt is a widespread Paleoproterozoic large igneous province in the Canadian Shield of Northern, Western and Eastern Canada.It extends more than 3,400 km (2,100 mi) from northeastern Manitoba through northwestern Ontario, southern Nunavut to northern Quebec.Igneous rocks of the Circum-Superior Belt are mafic-ultramafic in composition, deposited in the Labrador Trough. The Circum-Superior belt: a Proterozoic plate margin? ultramafic intrusions and associated nickel ores from the Thompson Nickel Belt, Manitoba, Canada.
This template should be placed at the bottom of articles about volcanology in Canada (see Category:Volcanism of Canada), to allow easy one-click navigation between them in some reasonable alphabetical order.Please add any missing or new volcanism articles in the appropriate sections of the template. These form part of the Circum-Superior Belt, a band of basaltic volcanics and sedimentary rocks that overlies the Archean Superior craton.From U-Pb zircon ages, Pb-Pb ages, and Sm-Nd ages, Nd initial isotopic compositions were calculated for all analyzed samples. Circum-Superior Belt. The 1884-1864 million year old Circum-Superior Belt constitutes a large igneous province extending for more than 3,400 km (2,113 mi) from the Labrador Trough in Labrador and northeastern Quebec though the Cape Smith Belt in northern Quebec, the Belcher Islands in southern Nunavut, the Fox River and Thompson belts in northern Manitoba, the Winnipegosis komatiite.
An update is presented on research in the setting and controls on Ni-Cu-PGE in the ca. 1883 Ma Circum-Superior belt, here with a specific focus on the Raglan belt of northern Quebec. A new stratigraphic interpretation indicates that the critical part of the stratigraphy is less imbricated. The Fox River Belt forms a very large and well-preserved segment of the Circum-Superior Belt in northern Manitoba. Although several workers have contributed to understanding aspects of the Fox River Belt, major questions are unresolved, especially concerning its genetic (± metallogenic) relationships with the Thompson Nickel. The timing of Early Proterozoic mafic magmatism in the western Superior Province Baragar WRA, Scoates RFJ (1981) The Circum-Superior Belt: A Proterozoic.
Circum-Superior Belt. The 1884-1864 million year old Circum-Superior Belt constitutes a large igneous province extending for more than 3,400 km (2,113 mi) from the Labrador Trough in Labrador and northeastern Quebec though the Cape Smith Belt in northern Quebec, the Belcher Islands in southern Nunavut, the Fox River and Thompson belts in northern Manitoba, the Winnipegosis komatiite. circum-Superior belt, it records a sequence of Paleoproterozoic seafloor sedimentation ments of the circum-Superior belt, the rocks were emplaced along. circum-Superior belt, it records a sequence of Paleoproterozoic seafloor sedimentation and ca. 1883 Ma mafic-ultramafic magmatism (Heaman et al., 1986). As in other seg-ments of the circum-Superior belt, the rocks were emplaced along the margins of the Superior craton prior to the closure of the Manikewan Ocean, culminating in the suture.
The Kipalu Formation is regarded as correlative to other ca. 1880 Ma IFs in the Circum-Superior Belt, such as the Gunflint IF in the Lake Superior region and Sokoman IF in the Labrador Trough (Rasmussen et al., 2012). It is followed by 0.2-2 km of largely submarine basalt (Flaherty Formation) and associated Haig feeder dykes and sills. Jan 20, 2017 environment; metamorphism; greenstone belts; volcanic-sedimentary belts; Circum-Superior large igneous province; Circum-Superior belt;. PDF | The Circum-Superior Belt of Proterozoic basalts and sedimentary rocks surrounds, and in some places, unconformably overlies the Archaean Superior Craton in northern Quebec, Canada.
Nine discrete segments of late Aphebian rocks irregularly distributed around the Archaean Superior Province have sufficient characteristics in common to invite. the Circum-Superior Belt, such as the Gunﬂint IF in the Lake Supe-rior region and Sokoman IF in the Labrador Trough (Rasmussen et al., 2012). It is followed by 0.2-2 km of largely submarine basalt (Flaherty Formation) and associated Haig feeder dykes and sills that intrude the Flaherty Formation and all underlying stratigra-. Cambridge Core - Structural Geology, Tectonics and Geodynamics - Large Igneous Provinces - by Richard E. Ernst.
May 19, 2015 The modules include the T-Belt, the T-Glove, and a jumpsuit known as Geochemistry of the Northern Segments of the Circum-Superior. Chapter 12 THE CIRCUM-SUPERIOR BELT: A PROTEROZOIC PLATE MARGIN? W. R. A. BARAGAR and R. F. J. SCOATES ABSTRACT Nine discrete segments of late Aphebian rocks irregularly distributed around the Archaean Superior Province have sufficient characteristics in common to invite the idea of a Superior craton ringed by a continuous belt of mid-Proterozoic sedimentary and volcanic rocks. The sedimentary rocks and volcanics of the Labrador Trough were intensely deformed and subjected to high grade metamorphism along with the Churchill terrain during the Trans-Hudson orogeny. It is a northeast extension of the Circum-Superior Belt and is terminated to the south by the Grenville Front Tectonic.
Detailed sections mapped across well exposed Aphebian tholeiitic and komatiitic flow assemblages on the islands of eastern Hudson Bay afford an insight into mechanisms of pillow development. Most of the flows with distinguishable boundaries are pillowed in their lower parts and massive in their. Circum-Superior Belt is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information. B This article has been rated as B-Class on the project s quality scale. Projects Overview. CaNickel Mining Limited (Formerly Crowflight Minerals Inc. ) is focused on the exploration and development of nickel-copper-platinum and palladium (PGM) deposits located within the metal-rich Circum-Superior Nickel Belt of Canada. This belt hosts a number of world-class.
This page was last edited on 23 May 2018, at 06:57. Files are available under licenses specified on their description page. All structured data from the file and property namespaces is available under the Creative Commons CC0 License; all unstructured text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. The Proterozoic spans the longest portion of earth s history, yet in contrast to the Archaean, the record of komatiites and related high MgO igneous rocks from this Eon is sparse. This paper describes the pristine Palaeoproterozoic Winnipegosis Komatiites, from Manitoba, Canada, which form part of the Circum-Superior Belt large igneous province. The belt has an age of 1870 ± 7 Ma , and is predominantly composed of basaltic and komatiitic volcanic rocks, with minor intrusive igneous and sedimentary rocks. The belt is considered part of the larger Circum-Superior Large Igneous Province, and was likely generated by a mantle plume.
IS THE KAPUSKASING STRUCTURE THE SITE OF A CRYPTIC SUTURE? Kevin Burke, Lunar and Planetary Institute, 3303 NASA Road 1, Houston,TX,77058 In 1968 J. T. Wilson suggested that the Circum-Ungava suture zone continued through the Kapuskasing to join the Penokean fold belt (Fig. 1) implying that the Kapuskasing marked the site of what has since. can deliver not only superior belt belt scale head pulley snub pulley vertical gravity take-up bend pulley return +60°C. But there are occasional circum-. Coeval Pickle Crow dykes cross the interior of the western Superior craton and provide a link between Marquette Range Supergroup magmatism and that of the northwestern part of the Superior craton. The ca. 1880 Ma Circum-Superior belt represents a metallotect because of two major Ni-Cu mining districts, the Thompson Nickel.