... Antigonish Highlands, the volcanic rocks occur mainly in the Lower Cambrian McDonalds Brook Group. In southern Cape Breton Island, they occur predominantly in the Middle Cambrian Bourinot Group. The chemistry of these volcanic rocks indicates that they are bimodal (basalts–rhyolites) and within plate...

... Bourinot Group volcanic sequences exposed within the Avalon composite terrane. Le hornblende d'un petit massif de diorite dans le complexe plutonique du mont Kellys, à l'intérieur du terrane composite d'Avalon, et les hornblende, muscovite et biotite d'une amphibolite et d'un gneiss de l'auréole de...

...Fig. 12. Age constraints of acritarch assemblages on the Bourinot Group and MacMullin Formation indicated by the vertical extension of rectangles, in relation to acritarch-based zones in Newfoundland (e.g., Martin and Dean 1988 ) and Spain ( Palacios 2008 , 2010 ). Correlation between...

... ( White et al. 1994 ; Palacios et al. 2012 ). The plutons are intruded by mafic dykes that may have been feeders to the middle Cambrian mafic volcanic units of the Bourinot belt ( Stevens 2010 ). The Bourinot belt consists of the Bourinot Group, including middle Cambrian basaltic and rhyolitic...

..., volcanic breccias and sediments) from near st. Andrews Channel, Cape Breton Island, Canada, Hayatsu and Carmichael (hereinafter referred to as HC) obtained the first proper K-Ar isochron showing a high initial 4oAr/36Ar ratio (HC, 1970). This suite of rocks (the Bourinot Group) is known to be Middle...

...Figure 2. Early Paleozoic paleolatitudes and their errors (references in text) for Amazonia (IT—Itabaiana dikes) and Ganderian rocks in North America (BG—Bourinot Group; BF—Bluffer Pond Formation; BIF—Big Indian Pond Formation; WF—Winterville Formation; SV—Stacyville volcanics) and Ireland (DG...

... Cambrian terranes in the Bourinot and Mira areas as concluded by Barr & Raeside ( 1989 ) and Barr & White ( 1996 ). The siliciclastic mudstone-dominated Chesley Drive Group (Landing, 1996 ) provides evidence that Cape Breton Island was part of a unified Avalonian terrane...

... to VGPs that lie along the North American apparent polar wander path of Van der Voo (1990) after mid-Silurian time. The Bourinot Group from Cape Breton Island, Nova Scotia, is represented in the plot by the paleopole of Johnson and Van der Voo (1985) . Sm/u—Middle to Upper Silurian; Su/Dl— Upper...

... Newfoundland (i.e., southwest Burin Peninsula and western Fortune Bay area) and the Doctor’s Brook allochthon, mainland Nova Scotia ( Landing and Benus 1985 ; Landing and Murphy 1991 ; Landing 1995 ). The post-Random section includes the Bonavista Group (West Centre Cove–Cuslett formations, likely...

...-dominated, Upper Cambrian–Lower Ordovician Tremadocian Chesley Drive Group (i.e., the biostratigraphically defined, lithologically indistinguishable MacNeil and McLeod formations of Hutchinson [1952] , discussed above). The oldest cover unit in the Bourinot Hills is extensional, bimodal volcanics...

... ). Further northeast in Cape Breton Island, the “Bourinot belt” ( Landing, 1991 ) was an uplifted block on the Avalonian marginal platform during the Cambrian ( Fig. 1 ). Its basement consists of middle Proterozoic marble and schist (George River Group) ( Hutchinson, 1952 ) with intrusions of probable...

... sequence ( Barr et al. 2023 , fig. 2). It does not meet the requirements for defining a formal lithostratigraphic unit and should be abandoned (i.e., NACSN 2005 ). ” Mira River Group is an appropriate term to encompass the Cambrian formations in the Mira River area ( Barr and White 2017 ; Barr et al...

... based on its discovery in platform mudstone of the Chesley Drive Group in Cape Breton Island, Nova Scotia. Elongate (up to 60 mm), epibenthic Bathysiphon tubes occur in wave-rippled, green-grey mudstone with a low diversity, probably dysoxic fauna. The mudstone is coeval with and lithologically similar...

... of cosmopolitanism (e.g. Molyneux et al. 2013 ), they have the potential to add insights into correlations where other fossil groups have more local distributions. † Author for correspondence: [email protected] 17 04 2015 04 03 2016 Copyright © Cambridge University Press...

... and Bourinot blocks; Fig. 1 ) that formed with early–middle Cambrian transtensional faulting and show significant early Cambrian volcanism ( Landing, 1996a ). Figure 2 Avalonian terminal Ediacaran–Ordovician cover sequence in Saint John, New Brunswick, region. Lithostratigraphic nomenclature from...

... assemblage supports the idea that the accretion of Ganderia reduced Iapetus to a narrow ocean basin, thereby hindering faunal interchange with Gondwana and allowing interchange with Laurentia. Paleomagnetic data from interbedded volcanic and sedimentary rocks of the Bourinot Group on Cape Breton Island...