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Article: Bay of Islands ophiolite suite, Newfoundland: Petrologic and geochemical characteristics with emphasis on rare earth element geochemistry

TitleBay of Islands ophiolite suite, Newfoundland: Petrologic and geochemical characteristics with emphasis on rare earth element geochemistry
Authors
Issue Date1979
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epsl
Citation
Earth And Planetary Science Letters, 1979, v. 45 n. 2, p. 337-348 How to Cite?
AbstractCharacteristic geochemical features of the ophiolite suite from the Bay of Islands Complex have been determined by major and trace element analyses of 13 rocks. Based on elements, such as rare earth elements (REE), whose abundances are relatively immobile during alteration and metamorphism, we find that (1) the pillow lavas and diabases are relatively depleted in light REE similar to most tholeiites occurring along spreading oceanic ridges, in back-arc basins and comprising the early phases of volcanism in island arcs; (2) the gabbros, composed of cumulate plagioclase and olivine with poikilitic clinopyroxene, have REE contents consistent with formation as cumulates precipitated from magmas represented by the overlying pillow lavas and diabases; (3) as in most harzburgites from ophiolites, the Bay of Islands harzburgite and dunite have relative REE abundances inconsistent with a genetic relationship to the overlying basic rocks - this inconsistency may be primary or it may result from late-stage alteration, contamination and/or metamorphism; (4) some Bay of Islands lherzolites have major and trace element abundances expected in the mantle source of the overlying basic rocks. Overall, the geochemical features of this Bay of Islands ophiolite suite are similar to those from Troodos and Vourinos, but these data are not sufficient to distinguish between different tectonic environments such as deep ocean ridge, small ocean basin or young island arc. © 1979.
Persistent Identifierhttp://hdl.handle.net/10722/178107
ISSN
2015 Impact Factor: 4.326
2015 SCImago Journal Rankings: 3.628

 

DC FieldValueLanguage
dc.contributor.authorSuen, CJen_US
dc.contributor.authorFrey, FAen_US
dc.contributor.authorMalpas, Jen_US
dc.date.accessioned2012-12-19T09:42:55Z-
dc.date.available2012-12-19T09:42:55Z-
dc.date.issued1979en_US
dc.identifier.citationEarth And Planetary Science Letters, 1979, v. 45 n. 2, p. 337-348en_US
dc.identifier.issn0012-821Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/178107-
dc.description.abstractCharacteristic geochemical features of the ophiolite suite from the Bay of Islands Complex have been determined by major and trace element analyses of 13 rocks. Based on elements, such as rare earth elements (REE), whose abundances are relatively immobile during alteration and metamorphism, we find that (1) the pillow lavas and diabases are relatively depleted in light REE similar to most tholeiites occurring along spreading oceanic ridges, in back-arc basins and comprising the early phases of volcanism in island arcs; (2) the gabbros, composed of cumulate plagioclase and olivine with poikilitic clinopyroxene, have REE contents consistent with formation as cumulates precipitated from magmas represented by the overlying pillow lavas and diabases; (3) as in most harzburgites from ophiolites, the Bay of Islands harzburgite and dunite have relative REE abundances inconsistent with a genetic relationship to the overlying basic rocks - this inconsistency may be primary or it may result from late-stage alteration, contamination and/or metamorphism; (4) some Bay of Islands lherzolites have major and trace element abundances expected in the mantle source of the overlying basic rocks. Overall, the geochemical features of this Bay of Islands ophiolite suite are similar to those from Troodos and Vourinos, but these data are not sufficient to distinguish between different tectonic environments such as deep ocean ridge, small ocean basin or young island arc. © 1979.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/epslen_US
dc.relation.ispartofEarth and Planetary Science Lettersen_US
dc.titleBay of Islands ophiolite suite, Newfoundland: Petrologic and geochemical characteristics with emphasis on rare earth element geochemistryen_US
dc.typeArticleen_US
dc.identifier.emailMalpas, J: jgmalpas@hku.hken_US
dc.identifier.authorityMalpas, J=rp00059en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0001562406en_US
dc.identifier.volume45en_US
dc.identifier.issue2en_US
dc.identifier.spage337en_US
dc.identifier.epage348en_US
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridSuen, CJ=7102317260en_US
dc.identifier.scopusauthoridFrey, FA=7103323963en_US
dc.identifier.scopusauthoridMalpas, J=7006136845en_US

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