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Article: Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland

TitleEpizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland
Authors
KeywordsEarth sciences
Issue Date1995
PublisherN R C Research Press. The Journal's web site is located at http://www.nrc.ca/cgi-bin/cisti/journals/rp/rp2_desc_e?cjes
Citation
Canadian Journal Of Earth Sciences, 1995, v. 32 n. 11, p. 1835-1844 How to Cite?
AbstractMagmatic activity of Silurian-Devonian age is widespread in the Appalachian-Caledonian Orogen. A marked characteristic of this magmatism is the composite nature of the igneous suites, which range from peridotite to granodiorite in single plutonic bodies. Such a suite of intrusive rocks, ranging in composition from minor peridotite to granodiorite, intrudes an openly folded sequence of Silurian volcanogenic sandstones and ash-flow tuffs on Fogo Island, northeast Newfoundland. Two units, the Rogers Cove and Hare Bay microgranites, consist of fine-grained hastingsite granites with spherulitic and flow-banded textures. These rocks have an A-type granitoid affinity. A third and the most voluminous granitic unit, the Shoal Bay granite exhibits mineral parageneses similar to the microgranites, but chemical characteristics more typical of calc-alkaline, I-type granitoids. Volcanic-sedimentary sequences spatially associated with the granitic rocks include dense, welded, high-silica, hastingsite-bearing ash-flow tuffs with compositions that suggest they represent erupted equivalents of fractionated end members of the Shoal Bay granite. -from Authors
Persistent Identifierhttp://hdl.handle.net/10722/42090
ISSN
2015 Impact Factor: 1.19
2015 SCImago Journal Rankings: 0.811

 

DC FieldValueLanguage
dc.contributor.authorSandeman, HAen_HK
dc.contributor.authorMalpas, Jen_HK
dc.date.accessioned2007-01-08T02:28:42Z-
dc.date.available2007-01-08T02:28:42Z-
dc.date.issued1995en_HK
dc.identifier.citationCanadian Journal Of Earth Sciences, 1995, v. 32 n. 11, p. 1835-1844en_HK
dc.identifier.issn0008-4077en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42090-
dc.description.abstractMagmatic activity of Silurian-Devonian age is widespread in the Appalachian-Caledonian Orogen. A marked characteristic of this magmatism is the composite nature of the igneous suites, which range from peridotite to granodiorite in single plutonic bodies. Such a suite of intrusive rocks, ranging in composition from minor peridotite to granodiorite, intrudes an openly folded sequence of Silurian volcanogenic sandstones and ash-flow tuffs on Fogo Island, northeast Newfoundland. Two units, the Rogers Cove and Hare Bay microgranites, consist of fine-grained hastingsite granites with spherulitic and flow-banded textures. These rocks have an A-type granitoid affinity. A third and the most voluminous granitic unit, the Shoal Bay granite exhibits mineral parageneses similar to the microgranites, but chemical characteristics more typical of calc-alkaline, I-type granitoids. Volcanic-sedimentary sequences spatially associated with the granitic rocks include dense, welded, high-silica, hastingsite-bearing ash-flow tuffs with compositions that suggest they represent erupted equivalents of fractionated end members of the Shoal Bay granite. -from Authorsen_HK
dc.format.extent6795859 bytes-
dc.format.extent2585 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherN R C Research Press. The Journal's web site is located at http://www.nrc.ca/cgi-bin/cisti/journals/rp/rp2_desc_e?cjesen_HK
dc.relation.ispartofCanadian Journal of Earth Sciencesen_HK
dc.rightsCanadian Journal of Earth Sciences. Copyright © N R C Research Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEarth sciencesen_HK
dc.titleEpizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundlanden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-4077&volume=32&spage=1835&epage=1844&date=1995&atitle=Epizonal+I-+and+A-+type+granites+and+associated+ash-flow+tuffs,+Fogo+Island,+northeast+Newfoundlanden_HK
dc.identifier.emailMalpas, J: jgmalpas@hku.hken_HK
dc.identifier.authorityMalpas, J=rp00059en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.scopuseid_2-s2.0-0029473487en_HK
dc.identifier.hkuros13212-
dc.identifier.volume32en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1835en_HK
dc.identifier.epage1844en_HK
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridSandeman, HA=6701319997en_HK
dc.identifier.scopusauthoridMalpas, J=7006136845en_HK

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