Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland
Magmatic 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 c...
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1995
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ftunivhongkonghu:oai:hub.hku.hk:10722/42090 2023-05-15T17:21:19+02:00 Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland Sandeman, HA Malpas, J 1995 6795859 bytes 2585 bytes application/pdf text/plain http://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+Newfoundland http://hdl.handle.net/10722/42090 eng eng N 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 Canada Canadian Journal of Earth Sciences Canadian Journal Of Earth Sciences, 1995, v. 32 n. 11, p. 1835-1844 1844 13212 0008-4077 11 http://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+Newfoundland eid_2-s2.0-0029473487 1835 http://hdl.handle.net/10722/42090 32 Canadian Journal of Earth Sciences. Copyright © N R C Research Press. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. CC-BY-NC-ND Earth sciences Article 1995 ftunivhongkonghu 2023-01-14T15:04:31Z Magmatic 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 published_or_final_version Article in Journal/Newspaper Newfoundland University of Hong Kong: HKU Scholars Hub Fogo ENVELOPE(-54.281,-54.281,49.717,49.717) Fogo Island ENVELOPE(-54.165,-54.165,49.667,49.667) Rogers Cove ENVELOPE(-54.315,-54.315,49.583,49.583) |
institution |
Open Polar |
collection |
University of Hong Kong: HKU Scholars Hub |
op_collection_id |
ftunivhongkonghu |
language |
English |
topic |
Earth sciences |
spellingShingle |
Earth sciences Sandeman, HA Malpas, J Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
topic_facet |
Earth sciences |
description |
Magmatic 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 published_or_final_version |
format |
Article in Journal/Newspaper |
author |
Sandeman, HA Malpas, J |
author_facet |
Sandeman, HA Malpas, J |
author_sort |
Sandeman, HA |
title |
Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
title_short |
Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
title_full |
Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
title_fullStr |
Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
title_full_unstemmed |
Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland |
title_sort |
epizonal i- and a-type granites and associated ash-flow tuffs, fogo island, northeast newfoundland |
publisher |
N 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 |
publishDate |
1995 |
url |
http://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+Newfoundland http://hdl.handle.net/10722/42090 |
long_lat |
ENVELOPE(-54.281,-54.281,49.717,49.717) ENVELOPE(-54.165,-54.165,49.667,49.667) ENVELOPE(-54.315,-54.315,49.583,49.583) |
geographic |
Fogo Fogo Island Rogers Cove |
geographic_facet |
Fogo Fogo Island Rogers Cove |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
Canadian Journal of Earth Sciences Canadian Journal Of Earth Sciences, 1995, v. 32 n. 11, p. 1835-1844 1844 13212 0008-4077 11 http://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+Newfoundland eid_2-s2.0-0029473487 1835 http://hdl.handle.net/10722/42090 32 |
op_rights |
Canadian Journal of Earth Sciences. Copyright © N R C Research Press. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766105222841630720 |