scholarly journals Rb-Sr Isotopic Data from Three Suites of Igneous Rocks, Cape Breton Island. Nova Scotia

10.4138/1605 ◽  
1986 ◽  
Vol 22 (2) ◽  
Author(s):  
J. Duncan Keppie ◽  
A. N. Halliday
Keyword(s):  
Nova Scotia ◽  
Igneous Rocks ◽  
Isotopic Data ◽  
Cape Breton Island ◽  
Cape Breton

Nd isotopic compositions of felsic igneous rocks in Cape Breton Island, Nova Scotia

1992 ◽  
Vol 29 (4) ◽  
pp. 650-657 ◽  
Author(s):  
Sandra M. Barr ◽  
Ernst Hegner
Keyword(s):  
New Brunswick ◽  
Small Variation ◽  
Igneous Rocks ◽  
Northwestern Part ◽  
Isotopic Data ◽  
Cape Breton Island ◽  
Late Precambrian ◽  
Cape Breton ◽  
Depleted Mantle ◽  
Juvenile Crust

Nd isotopic data from 18 felsic plutonic and volcanic units in Cape Breton Island show variations consistent with other geological and geophysical evidence for at least three distinct terranes. A ca. 1.2 Ga syenite considered to be part of Grenvilleage basement exposed in the northwestern part of the island yields an initial εNd value of +0.4 and a depleted-mantle model age (TDM) of 1.66 Ga, suggesting substantial involvement of older (Archean or Early Proterozoic) crust in its petrogenesis. A TDM of 1.38 Ga indicated by Nd isotopic data for a Devonian granite spatially associated with the syenite is also consistent with the presence of older crust in that part of Cape Breton Island. In contrast, Silurian rhyolite and Devonian granites from the Aspy terrane have TDM ranging from 0.7 to 1.1 Ga and initial εNd between +2.8 and −1.2, and overlap in isotopic characteristics with late Precambrian and Early Ordovician plutons in the Bras d'Or terrane that yield TDM of 0.9–1.1 Ga and initial εNd of +1.4 to −1.8. The relatively small variation in εNd and TDM in these terranes suggests that old crust like that under the Blair River Complex may not be present. Granitic plutons and rhyolite in the Mira terrane of southeastern Cape Breton Island have a range in TDM (0.8–1.2 Ga) similar to that of the Aspy and Bras d'Or terranes, but initial εNd values ranging from +0.8 to +5.0 indicate more juvenile crust. This juvenile crust also appears to be present under southern New Brunswick and eastern Newfoundland and may be characteristic of the Avalon terrane.

Cape Breton ruby, a new Canadian gemstone discovery, Cape Breton Island, Nova Scotia

2007 ◽  
Vol 30 (5) ◽  
pp. 279-286 ◽  
Author(s):  
David J. Mossman ◽  
James D. Duivenvoorden ◽  
Fenton M. Isenor
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton

RECOGNIZING CRYPTIC OROGENIC SUTURES IN COLLISIONAL OROGENS: THE EXAMPLE OF CAPE BRETON ISLAND, NOVA SCOTIA, CANADA

2018 ◽  
Author(s):  
Sandra M. Barr ◽  
◽  
Chris E. White ◽  
Deanne van Rooyen
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton ◽  
Collisional Orogens

DECIPHERING TECTONOMAGMATIC EVENTS IN THE GANDERIAN ASPY TERRANE OF CAPE BRETON ISLAND, NOVA SCOTIA, CANADA: JUXTAPOSED EARLY EDIACARAN THROUGH DEVONIAN ARC AND WITHIN-PLATE PLUTONS

2019 ◽  
Author(s):  
Sandra M. Barr ◽  
◽  
Chris E. White ◽  
Deanne van Rooyen ◽  
Gabriel Sombini dos Santos ◽  
...  
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton

Changes in Numbers of Wintering American Black Ducks and Mallards in Urban Cape Breton Island, Nova Scotia

2003 ◽  
Vol 10 (3) ◽  
pp. 297 ◽  
Author(s):  
D. B. McCorquodale ◽  
R. W. Knapton
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton ◽  
American Black

scholarly journals Ar/Ar thermochronology of the Aspy and Bras d'Or terranes, Cape Breton Island, Nova Scotia

2018 ◽  
Author(s):  
D A Kellett ◽  
S M Barr ◽  
D van Rooyen ◽  
C E White
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton

scholarly journals Airborne geophysics, geology and Radarsat-1 SAR compilation, Cape Breton Island, Nova Scotia

1998 ◽  
Author(s):  
R J Hetu ◽  
V Singhroy ◽  
R McGregor
Keyword(s):  
Nova Scotia ◽  
Cape Breton Island ◽  
Cape Breton ◽  
Airborne Geophysics
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