Murphy, J Brendan, Anderson, Alan J, Archibald, Doug A (1998) Postorogenic alkali feldspar granite and associated pegmatites in West Avalonia: the petrology of the Neoproterozoic Georgeville Pluton, Antigonish Highlands, Nova Scotia. Canadian Journal of Earth Sciences, 35 (2) 110-120 doi:10.1139/e97-099
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Postorogenic alkali feldspar granite and associated pegmatites in West Avalonia: the petrology of the Neoproterozoic Georgeville Pluton, Antigonish Highlands, Nova Scotia | ||
| Journal | Canadian Journal of Earth Sciences | ||
| Authors | Murphy, J Brendan | Author | |
| Anderson, Alan J | Author | ||
| Archibald, Doug A | Author | ||
| Year | 1998 (February 1) | Volume | 35 |
| Issue | 2 | ||
| Publisher | Canadian Science Publishing | ||
| DOI | doi:10.1139/e97-099Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 483072 | Long-form Identifier | mindat:1:5:483072:0 |
| GUID | 0 | ||
| Full Reference | Murphy, J Brendan, Anderson, Alan J, Archibald, Doug A (1998) Postorogenic alkali feldspar granite and associated pegmatites in West Avalonia: the petrology of the Neoproterozoic Georgeville Pluton, Antigonish Highlands, Nova Scotia. Canadian Journal of Earth Sciences, 35 (2) 110-120 doi:10.1139/e97-099 | ||
| Plain Text | Murphy, J Brendan, Anderson, Alan J, Archibald, Doug A (1998) Postorogenic alkali feldspar granite and associated pegmatites in West Avalonia: the petrology of the Neoproterozoic Georgeville Pluton, Antigonish Highlands, Nova Scotia. Canadian Journal of Earth Sciences, 35 (2) 110-120 doi:10.1139/e97-099 | ||
| In | (1998, February) Canadian Journal of Earth Sciences Vol. 35 (2) Canadian Science Publishing | ||
| Abstract/Notes | The 579.8 ± 2.2 Ma (40Ar-39Ar, muscovite) Georgeville Pluton in mainland Nova Scotia is an epizonal body consisting of alkali feldspar granite and related pegmatite. The pluton intrudes the ca. 619-608 Ma arc-related rocks of the Georgeville Group, which comprises part of West Avalonia, the largest terrane in the Canadian Appalachians. The granite is characterized by above-average SiO2, Th, Nb, Y, and Zr; very low CaO, TiO2, MgO, FeO, and MnO; and most notably by positively sloped rare earth element (REE) profiles generated by extreme light REE depletion. Tectonic discrimination diagrams suggest a within-plate environment, with many, but not all, geochemical and mineralogical features resembling A-type granites. Numerous local and regional geological constraints indicate that the pluton was intruded in a trancurrent setting following the cessation of Neoproterozoic arc-related magmatism along the West Avalonian portion of the Gondwanan continental margin. Geochemical data are consistent with derivation by partial melting of depleted crust or upper mantle followed by extreme fractionation, including REE-rich accessory phases. | ||
See Also
These are possibly similar items as determined by title/reference text matching only.
