Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/40740
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- Title
- Trace element partitioning during high-P partial melting and melt-rock interaction; an example from northern Fiordland, New Zealand
- Related
- Journal of metamorphic geology, Vol. 22, Issue 5, p.443-457
- DOI
- 10.1111/j.1525-1314.2004.00525.x
- Publisher
- Blackwell Publishing
- Date
- 2004
- FoR/RFCD Code(s)
-
040299 Geochemistry not elsewhere classified
040304 Igneous and Metamorphic Petrology
- Author/Creator
- Schröter, F. C
- Author/Creator
- Stevenson, J. A
- Author/Creator
- Daczko, N. R
- Author/Creator
- Clarke, G. L
- Author/Creator
- Pearson, N. J
- Author/Creator
- Klepeis, K. A
- Description
- Pods of granulite facies dioritic gneiss in the Pembroke Valley, Milford Sound, New Zealand, preserve peritectic garnet surrounded by trondhjemitic leucosome and vein networks, that are evidence of high-P partial melting. Garnet-bearing trondhjemitic veins extend into host gabbroic gneiss, where they are spatially linked with the recrystallization of comparatively low-P two-pyroxene-hornblende granulite to fine-grained high-P garnet granulite assemblages in garnet reaction zones. New data acquired using a Laser Ablation Inductively Coupled Plasma Mass Spectrometer (LA-ICPMS) for minerals in various textural settings indicate differences in the partitioning of trace elements in the transition of the two rock types to garnet granulite, mostly due to the presence or absence of clinozoisite. Garnet in the garnet reaction zone (gabbroic gneiss) has a distinct trace element pattern, inherited from reactant gabbroic gneiss hornblende. Peritectic garnet in the dioritic gneiss and garnet in trondhjemitic veins from the Pembroke Granulite have trace element patterns inherited from the melt-producing reaction in the dioritic gneiss. The distinct trace element patterns of garnet link the trondhjemitic veins geochemically to sites of partial melting in the dioritic gneiss.
- Description
- 15 page(s)
- Subject Keyword
- 040299 Geochemistry not elsewhere classified
- Subject Keyword
- 040304 Igneous and Metamorphic Petrology
- Subject Keyword
- garnet granulite
- Subject Keyword
- Laser Ablation Inductively Coupled Plasma Mass Spectrometer
- Subject Keyword
- partial melting
- Subject Keyword
- trace and REE
- Subject Keyword
- two-pyroxene hornblende granulite
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Earth and Planetary Sciences
- Organisation
- Macquarie University. National Key Centre for Geochemical Evolution and Metallogeny of Continents (GEMOC)
- Identifier
- http://hdl.handle.net/1959.14/40740
- Identifier
- ISSN:0263-4929
- Identifier
- mq-rm-2004020619
- Language
- eng
- Reviewed
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