...Ya-Dong Chen; Shoufa Lin; Cees R. van Staal Abstract Cape Breton Island has been interpreted as consisting of four zones of pre-Carboniferous rocks, but the relationships among them are controversial. To help resolve the controversy, we have dated detrital zircons from a conglomerate (part...

...J. D. Keppie; R. D. Dallmeyer; T. E. Krogh Abstract Isotopic studies have been used to determine protolith and tectonothermal ages in rocks of the Cape North and Money Point groups and two plutons, that form part of the Avalon Composite Terrane. Colourless, euhedral zircon crystals from low-grade...

...Deanne van Rooyen; Chris E. White; Sandra M. Barr; Évelyne Sunatori; Caleb J. Grant; Kyle J. Kucker Structural complexity of the Cape Breton Highlands is a key problem in reconstructing tectonic events in the northern Appalachian orogen. A new U–Pb thermal ionization mass spectrometry age of 428.53...

.... 2017 . Bedrock geology legend for Cape Breton Island, Nova Scotia . Nova Scotia Department of Natural Resources, Geoscience and Mines Branch, Open File Illustration ME 2017-001 . Barr , S.M. , and Raeside , R.P. 1989 . Tectono-stratigraphic terranes in Cape Breton Island, Nova...

... ) There are no competing interests to declare. 08 03 2023 21 03 2023 19 05 2023 19 05 2023 2023 The Author(s) Permission for reuse (free in most cases) can be obtained from copyright.com . Avalon Cape Breton Island Ediacaran Cambrian depositional history sequence stratigraphy...

...Deanne van Rooyen; Sandra M. Barr; Chris E. White; James L. Crowley The Bras d’Or terrane of central Cape Breton Island, Nova Scotia, Canada, contains a well-preserved record of the Ediacaran to early Cambrian evolution of Ganderia, a Gondwana-derived terrane in the northern Appalachian orogen...

...Sandra M. Barr; Chris E. White; Teodoro Palacios; Sören Jensen; Deanne van Rooyen; James L. Crowley The MacCodrum Formation is a classical “lower” Cambrian unit in southeastern Cape Breton Island stratigraphy, described since the 1800s. The age of this formation and its correlation with other...

...J. Gregory Shellnutt; Jaroslav Dostal; J. Duncan Keppie; D. Fraser Keppie Abstract Rocks from the Blair River inlier of Northern Cape Breton Island (Nova Scotia, Canada) have been correlated with either the Grenville basement of eastern Laurentia or the accreted Avalon terrane. Additional zircon U...

...Gabriel Sombini dos Santos; Sandra M. Barr; Chris E. White; Deanne van Rooyen The Margaree pluton extends for >40 km along the axis of the Ganderian Aspy terrane of northern Cape Breton Island, Nova Scotia. The pluton consists mainly of coarse-grained megacrystic syenogranite, intruded by small...

... with the platformal carbonate rocks (Harlow and Bender, 2013 ). There are Canadian examples of carbonate-hosted gem corundum deposits, near Revelstoke, British Columbia, and Kimmirut, Nunavut (Dzikowski 2004 ). A recently-discovered low-grade, coloured (pink to lilac) corundum occurrence in Cape Breton (Nova...

...D. van Rooyen; S.M. Barr; C.E. White; M.A. Hamilton The northern Appalachian orogen preserves evidence of a complex history of amalgamation of terranes with both Laurentian and Gondwanan affinities. The Ganderian Bras d’Or terrane of central Cape Breton Island is not well represented elsewhere...

...Nabil A. Shawwa; Robert P. Raeside; David W.A. McMullin; Christopher R.M. McFarlane At Kellys Mountain, Cape Breton Island, Nova Scotia, the late Neoproterozoic Glen Tosh formation (a low-grade metapsammite–metapelite unit of the George River Metamorphic Suite) has been intruded by diorite...

...Chris E. White; Daniel J. Kontak; Garth J. DeMont; Douglas Archibald Abstract Amygdaloidal basaltic flows of the Ashfield Formation were encountered in two drill holes in areas of positive aeromagnetic anomalies in the Carboniferous River Denys Basin in southwestern Cape Breton Island, Nova Scotia...

... of the geology in the western part of the Ganderian Aspy terrane of Cape Breton Island. Nine new U–Pb (zircon) ages show that the former “Chéticamp pluton” consists of 10 separate plutons of five different ages: late Neoproterozoic (ca. 567 Ma), Cambrian–Ordovician (490–482 Ma), Ordovician–Silurian (442–440 Ma...

...STEPHEN R. WESTROP; ED LANDING Abstract New and archival collections from the Chelsey Drive Group of the Avalon terrane of Cape Breton Island, Nova Scotia, Canada, yield late Cambrian trilobites and agnostoid arthropods with full convexity that contrast with compacted, often deformed material from...

...ED LANDING; STEPHEN R. WESTROP Abstract The common belief that organic-rich mudstones formed in quiescent, distal settings is further weakened by study of an upper Cambrian ( Leptoplastus – lower Peltura superzones) succession in the Chesley Drive Group in Avalonian Cape Breton Island...

... low- to low-grade metamorphic processes at 3.5±0.4 kbar, 280±30°C in the Avalonian Mira terrane of SE Cape Breton Island (Nova Scotia). The Mira terrane comprises Neoproterozoic volcanic-arc rocks overlain by Cambrian sedimentary rocks. Crystallization of metamorphic white mica was dated in six...

...Fred Baechler; Robert Boehner Abstract Approximately 23% (2700 km 2 ) of Cape Breton Island consists of a wide variety of glaciated bedrock (meta-carbonates, carbonates, and evaporites) that has the potential for karst development. An additional 1100 km 2 of such strata have been inundated by post...

... the abundant vein networks of the Mira terrane, Cape Breton Island. Six categories of vein assemblages — from oldest to youngest — are present: ( i ) quartz–albite, ( ii ) quartz–epidote, ( iii ) quartz, ( iv ) quartz–chlorite–calcite, ( v ) quartz–calcite, and ( vi ) calcite. Vein system temperatures were...

...Teodoro Palacios; Sören Jensen; Chris E. White; Sandra M. Barr Abstract We present the first description of organic-walled microfossils from Cambrian strata of the Bourinot belt, central Cape Breton Island. Age-diagnostic acritarchs have been recovered from the Dugald and MacMullin formations...