| Reference Type | Journal (article/letter/editorial) |
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| Title | Rare earth element concentrations in Quaternary volcanic rocks of southwestern British Columbia |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Green, Nathan L. | Author |
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| Henderson, Paul | Author |
| Year | 1984 (June 1) | Volume | 21 |
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| Issue | 6 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e84-079Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 478305 | Long-form Identifier | mindat:1:5:478305:7 |
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| GUID | 0 |
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| Full Reference | Green, Nathan L., Henderson, Paul (1984) Rare earth element concentrations in Quaternary volcanic rocks of southwestern British Columbia. Canadian Journal of Earth Sciences, 21 (6) 731-736 doi:10.1139/e84-079 |
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| Plain Text | Green, Nathan L., Henderson, Paul (1984) Rare earth element concentrations in Quaternary volcanic rocks of southwestern British Columbia. Canadian Journal of Earth Sciences, 21 (6) 731-736 doi:10.1139/e84-079 |
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| In | (1984, June) Canadian Journal of Earth Sciences Vol. 21 (6) Canadian Science Publishing |
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| Abstract/Notes | A suite of hy-normative hawaiites, ne-normative mugearite, and calc-alkaline andesitic rocks from the Garibaldi Lake area exhibits fractionated, slightly concave-upward REE patterns (CeN/YbNβ=β4.5β15), heavy REE contents about 5β10 times the chondritic abundances, and no Eu anomalies. It is unlikely that the REE patterns provide information concerning partial melting conditions beneath southwestern British Columbia because they have probably been modified substantially by upper crustal processes including crustal contamination and (or) crystal fractionation. The REE contents of the Garibaldi Lake lavas are not incompatible with previous interpretations that (1) the hawaiites have undergone considerable fractionation of olivine, plagioclase, and clinopyroxene; and (2) the individual andesitic suites were derived from separate batches of chemically distinct magma that evolved along different high-level crystallization trends. In general, however, the andesites are characterized by lower light REE contents than the basaltic andesites. These differences in LREE abundances may reflect different amounts of LREE-rich accessory phases, such as apatite, sphene, or allanite, assimilated from the underlying quartz diorites. |
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