大西洋地球科学学会
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作者:Sandra M. Barr , Donald W. Davis ...
来源:[J].Atlantic Geology(IF 0.846), 2016, Vol.52, pp.037-059大西洋地球科学学会
摘要:The Creignish Hills and North Mountain areas of southwestern Cape Breton Island consist mostly of Neoproterozoic rocks typical of the Ganderian Bras d’Or terrane. U-Pb ages presented here for detrital zircon in the Blues Brook Formation of the Creignish Hills confirm a depos...
作者:Sandra M. Barr
来源:[J].Atlantic Geology(IF 0.846), 2014, Vol.50, pp.atlgeol.2014.007-atlgeol.2014.007大西洋地球科学学会
作者:Sandra M. Barr , Christian Pin ...
来源:[J].Atlantic Geology(IF 0.846), 2013, Vol.49, pp.57-69大西洋地球科学学会
摘要:The relationship between low-grade metasedimentary and high-grade paragneissic Precambrian rock units in the Bras d’Or terrane of central Cape Breton Island is a long-standing geological problem. Whole-rock geochemical and Nd isotopic data from representative components of t...
作者:Sandra M. Barr , Cameron J. Bartsch ...
来源:[J].Atlantic Geology(IF 0.846), 2014, Vol.50, pp.155-166大西洋地球科学学会
摘要:The Beaver Harbour Porphyry is a high-level intermediate to felsic granitoid and locally tuffaceous unit with quartz and less abundant feldspar phenocrysts. It forms a fault-bound sliver along the southern margin of the New River belt in southern New Brunswick. A concordant ...
作者:Eric R. Force , Sandra M. Barr
来源:[J].Atlantic Geology(IF 0.846), 2013, Vol.48, pp.137-145大西洋地球科学学会
摘要:A quartz sandstone bed in a dominantly conglomeratic section in the central part of the Lower Carboniferous Horton Group on Petit-de-Grat Island, offshore southern Cape Breton Island, Nova Scotia, contains detrital zircon grains with ages ranging from mid-Devonian to Archean...
作者:Sandra M. Barr , Chris E White , John Ketchum
来源:[J].Atlantic Geology(IF 0.846), 2012, Vol.48, pp.70-85大西洋地球科学学会
摘要:The Cape Porcupine Complex west of the Strait of Canso in northern mainland Nova Scotia consists of mainly fault-bounded units of metasedimentary, metavolcanic, and granitoid rocks. A previously reported U-Pb (zircon) age of 610 ± 3 Ma from syenogranite combined with petrolo...
作者:Sandra M. Barr , Reginald A. Wilson ...
来源:[J].Atlantic Geology(IF 0.846), 2012, Vol.48, pp.97-123大西洋地球科学学会
摘要:The Late Silurian Landry Brook and Dickie Brook plutons and Charlo plutonic suite underlie a combined area of approximately 80 km2 in the northeastern part of the Ganderian Tobique-Chaleur tectonostratigraphic belt in northern New Brunswick. The Landry Brook pluton is divide...
作者:... Joanna Potter , Sandra M. Barr , Chris E. White
来源:[J].Atlantic Geology(IF 0.846), 2012, Vol.48, pp.54-69大西洋地球科学学会
摘要:The ca. 620 Ma Huntington Mountain pluton and East Bay Hills Group, which comprise part of the Avalonian Mira terrane, Cape Breton Island, Nova Scotia, Canada, are characterized by pervasive propylitic alteration (chlorite, epidote, sericite, and Fe-Ti oxides) and low δ18O v...
作者:Sandra M. Barr , James K. Mortensen ...
来源:[J].Atlantic Geology(IF 0.846), 2010, Vol.46, pp.155-172大西洋地球科学学会
摘要:Machias Seal Island in the northern Gulf of Maine consists of fine- to medium-grained weakly foliated quartz monzodiorite. Although previously inferred to be as young as Devonian, the quartz monzodiorite yielded an Ediacaran–Early Cambrian U-Pb (zircon) age of 542.0 ± 0.9 Ma...
作者:Sandra M. Barr , Sandra Kamo , Chris E. White
来源:[J].Atlantic Geology(IF 0.846), 1999, Vol.35 (3), pp.2033-2033大西洋地球科学学会
摘要:A tonalite dyke in the Benacadie Brook Formation in the Boisdale Hills of central Cape Breton Island yielded a U-Pb (zircon) age of 564.5 ± 5.1 Ma, interpreted to be the age of intrusion. The age is identical within error to the U-Pb (zircon) age of 564 +3/-2 Ma previously r...

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