Petrogenesis, emplacement setting, and magmatic-hydrothermal mineralization of the peralkaline Flowers River Igneous Suite, Hopedale Block, Labrador
| dc.contributor.advisor | Van Rooyen, Deanne | |
| dc.contributor.advisor | McFarlane, Christopher R.M. | |
| dc.contributor.author | Ducharme, Taylor A. | |
| dc.date.accessioned | 2023-03-01T16:48:03Z | |
| dc.date.available | 2023-03-01T16:48:03Z | |
| dc.date.issued | 2020 | |
| dc.date.updated | 2023-03-01T15:03:17Z | |
| dc.description.abstract | The peralkaline Flowers River Igneous Suite intrudes the southernmost region of the Mesoproterozoic Nain Plutonic Suite composite batholith in north-central Labrador. The Flowers River complex comprises a voluminous series of peralkaline granite ring intrusions and their coeval volcanic assemblage, the latter of which has been identified as a target for rare metal exploration. Peralkaline igneous complexes throughout Labrador show a ubiquitous spatial association with earlier anorthosite-mangerite-charnockite-granite (AMCG)-affinity plutonism, suggesting the geodynamic conditions responsible for generating the latter may have systematically conditioned those sites to subsequently produce highly evolved, incompatible element-enriched magmas. Laser ablation inductively coupled plasma-mass spectrometry (LA ICP-MS) U-Pb zircon geochronology is used to define a high-resolution magmatic and hydrothermal timeline for the Flowers River complex and its host suites. The Flowers River Granite intruded the local Nain Plutonic Suite rocks after ca. 8 Myr of quiescence, though trace element compositions indicate these rocks share a common, incompatible element-enriched source. Protracted fractionation of the liquids derived from this source gave rise to two contrasting styles of magmatic-hydrothermal (Zr-Nb-Y-)REE mineralization, both hosted by the cogenetic volcanic rocks overlying the plutonic complex. | |
| dc.description.copyright | © Taylor Ducharme, 2020 | |
| dc.format | text/xml | |
| dc.format.extent | ix, 146 pages | |
| dc.format.medium | electronic | |
| dc.identifier.uri | https://unbscholar.lib.unb.ca/handle/1882/14500 | |
| dc.language.iso | en_CA | |
| dc.publisher | University of New Brunswick | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.subject.discipline | Earth Sciences | |
| dc.title | Petrogenesis, emplacement setting, and magmatic-hydrothermal mineralization of the peralkaline Flowers River Igneous Suite, Hopedale Block, Labrador | |
| dc.type | master thesis | |
| thesis.degree.discipline | Earth Sciences | |
| thesis.degree.fullname | Master of Science | |
| thesis.degree.grantor | University of New Brunswick | |
| thesis.degree.level | masters | |
| thesis.degree.name | M.Sc. |
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