Oxburgh, E. R. (1964) Petrological Evidence for the Presence of Amphibole in the Upper Mantle and its Petrogenetic and Geophysical Implications. Geological Magazine, 101 (1) 1-19 doi:10.1017/s001675680004841x
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Petrological Evidence for the Presence of Amphibole in the Upper Mantle and its Petrogenetic and Geophysical Implications | ||
| Journal | Geological Magazine | ||
| Authors | Oxburgh, E. R. | Author | |
| Year | 1964 (February 6) | Volume | 101 |
| Page(s) | 1-19 | Issue | 1 |
| Publisher | Cambridge University Press (CUP) | ||
| DOI | doi:10.1017/s001675680004841xSearch in ResearchGate | ||
| Mindat Ref. ID | 249352 | Long-form Identifier | mindat:1:5:249352:1 |
| GUID | f8be6eb3-40e6-49da-8a36-fb623aa6e5d0 | ||
| Full Reference | Oxburgh, E. R. (1964) Petrological Evidence for the Presence of Amphibole in the Upper Mantle and its Petrogenetic and Geophysical Implications. Geological Magazine, 101 (1) 1-19 doi:10.1017/s001675680004841x | ||
| Plain Text | Oxburgh, E. R. (1964) Petrological Evidence for the Presence of Amphibole in the Upper Mantle and its Petrogenetic and Geophysical Implications. Geological Magazine, 101 (1) 1-19 doi:10.1017/s001675680004841x | ||
| In | (1964, February) Geological Magazine Vol. 101 (1) Cambridge University Press (CUP) | ||
| Abstract/Notes | AbstractIn addition to meeting various geophysical requirements, an ultrabasic upper mantle must provide a source both for olivine nodules and for the range of “primary” basaltic types, i.e. those which are apparently uncontaminated and undifferentiated. Potassium abundances and other considerations suggest that olivine nodules represent upper mantle which has previously yielded basalt by partial fusion but is now “barren”, principally because of potassium depletion, and is unable to yield more. The possible range of potassium contents of “parent” upper mantle (still able to yield basalt) is considered and it is argued that at any concentration within this range, the potassium is not distributed between the main mantle phases as a trace component but is contained largely within a potassium-rich minor phase. It is shown that this phase is probably an amphibole and may make up between 2 and 20 wt. per cent of parent upper mantle. In addition to the isochemical phase changes to be expected with increasing depth, a transition is proposed from an upper zone of amphibole-free (barren) upper mantle to a lower zone of amphibole-bearing (parent) upper mantle. The petrogenetic and geophysical implications of such a model are discussed; in particular it provides a possible explanation for the Gutenberg low-velocity zone. | ||
References Listed
These are the references the publisher has listed as being connected to the article. Please check the article itself for the full list of references which may differ. Not all references are currently linkable within the Digital Library.
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| Not Yet Imported: American Journal of Science - journal-article : 10.2475/ajs.s5-14.82.293 If you would like this item imported into the Digital Library, please contact us quoting Journal ID 4057 | |
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