| Reference Type | Journal (article/letter/editorial) |
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| Title | Petrology and geochemistry of Cambrian volcanic rocks from the Avalon Zone in New Brunswick |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Greenough, John D. | Author |
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| McCutcheon, S. R. | Author |
| Papezik, V. S. | Author |
| Year | 1985 (June 1) | Volume | 22 |
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| Issue | 6 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e85-092Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 478704 | Long-form Identifier | mindat:1:5:478704:8 |
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| GUID | 0 |
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| Full Reference | Greenough, John D., McCutcheon, S. R., Papezik, V. S. (1985) Petrology and geochemistry of Cambrian volcanic rocks from the Avalon Zone in New Brunswick. Canadian Journal of Earth Sciences, 22 (6) 881-892 doi:10.1139/e85-092 |
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| Plain Text | Greenough, John D., McCutcheon, S. R., Papezik, V. S. (1985) Petrology and geochemistry of Cambrian volcanic rocks from the Avalon Zone in New Brunswick. Canadian Journal of Earth Sciences, 22 (6) 881-892 doi:10.1139/e85-092 |
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| In | (1985, June) Canadian Journal of Earth Sciences Vol. 22 (6) Canadian Science Publishing |
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| Abstract/Notes | Lower to Middle Cambrian volcanic rocks occur within the Avalon Zone of southern New Brunswick at Beaver Harbour and in the Long Reach area. The Beaver Harbour rocks are intensely altered, but the major- and trace-element geochemistry indicates that they could be highly evolved (basaltic andesites) within-plate basalts. The mafic flows from the Long Reach area form two chemically and petrologically distinct groups: (1) basalts with feldspar phenocrysts that represent evolved continental tholeiites with some oceanic characteristics; and (2) a group of aphyric basalts showing extremely primitive continental tholeiite compositions, also with oceanic affinities and resembling some rift-related Jurassic basalts on the eastern seaboard. Felsic pyroclastic rocks in the Long Reach area make the suite bimodal. This distribution of rock types supports conclusions from the mafic rocks that the area experienced tension throughout the Early to Middle Cambrian. |
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