Melt productivity of aluminous anatectic rocks of the central Grenville Province and characterization of potential anatectic granite layers

Mendoza Marin, Daniela (2023) Melt productivity of aluminous anatectic rocks of the central Grenville Province and characterization of potential anatectic granite layers. Masters thesis, Memorial University of Newfoundland.

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	[English] Archive (ZIP) (Appendix A2.1: Petrography of the PLV1 Metapelites) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (10MB)
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	[English] Archive (ZIP) (Appendix A2.3: Petrography of the PLV Granites) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (767kB)
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	[English] Archive (ZIP) (Appendix A4.1: Mineral Chemistry of the PLV1 sample HJ-60c - Feldspar) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (232kB)
	[English] Archive (ZIP) (Appendix A4.1: Mineral Chemistry of the PLV1 sample HJ-60c - Biotite) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (181kB)
	[English] Archive (ZIP) (Appendix A4.1: Mineral Chemistry of the PLV1 sample HJ-60c - Garnet 0002) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (261kB)
	[English] Archive (ZIP) (Appendix A4.2: Mineral Chemistry of the PLV1 sample HJ-88D2 - Biotite) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (198kB)
	[English] Archive (ZIP) (Appendix A4.2: Mineral Chemistry of the PLV1 sample HJ-88D2 - Cordierite) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (85kB)
	[English] Archive (ZIP) (Appendix A4.2: Mineral Chemistry of the PLV1 sample HJ-88D2 - Feldspar) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (252kB)
	[English] Archive (ZIP) (Appendix A4.2: Mineral Chemistry of the PLV1 sample HJ-88D2- Garnet) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (150kB)
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	[English] Archive (ZIP) (Appendix A4.3: Mineral Chemistry of the PLV2 granite sample 12-AI-15, and metapelites 12-AI-10Y and 12-AI-49 - Biotite) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (333kB)
	[English] Archive (ZIP) (Appendix A4.3: Mineral Chemistry of the PLV2 granite sample 12-AI-15, and metapelites 12-AI-10Y and 12-AI-49 - Feldspar) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (476kB)
	[English] Archive (ZIP) (Appendix A4.3: Mineral Chemistry of the PLV2 granite sample 12-AI-15, and metapelites 12-AI-10Y and 12-AI-49 - Garnet) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (248kB)
	[English] Archive (ZIP) (Appendix A4.4: Mineral Chemistry of the PLV2 granite 12-AI-20 and PLV1 leucocratic sample, 08-65-A - Biotite) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (214kB)
	[English] Archive (ZIP) (Appendix A4.4: Mineral Chemistry of the PLV2 granite 12-AI-20 and PLV1 leucocratic sample, 08-65-A - Feldspar) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (524kB)
	[English] Archive (ZIP) (Appendix A4.4: Mineral Chemistry of the PLV2 granite 12-AI-20 and PLV1 leucocratic sample, 08-65-A - Garnet) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (248kB)
	[English] Archive (ZIP) (Appendix A5.1: Microprobe points of the PLV1 aluminous layers - HJ-60C) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (7MB)
	[English] Archive (ZIP) (Appendix A5.1: Microprobe points of the PLV1 aluminous layers - HJ-88D2) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (8MB)
	[English] Archive (ZIP) (Appendix A5.2: Microprobe points of the PLV2 aluminous layers - 12-AI-10Y) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (4MB)
	[English] Archive (ZIP) (Appendix A5.2: Microprobe points of the PLV2 aluminous layers - 12-AI-49) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (3MB)
	[English] Archive (ZIP) (Appendix A5.3: Microprobe points of the PLV granites and leucocratic layers - 08-65-A) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (2MB)
	[English] Archive (ZIP) (Appendix A5.3: Microprobe points of the PLV granites and leucocratic layers - 12-AI-15) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (940kB)
	[English] Archive (ZIP) (Appendix A5.3: Microprobe points of the PLV granites and leucocratic layers - 12-AI-20) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (842kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - BSE) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (20kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - Ca) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (27kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - Fe) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (25kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - Garnet 1AI) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (30kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - Mg) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (32kB)
	[English] Archive (ZIP) (Appendix A6.1: Garnet 1 chemical maps of the PLV sample HJ-60c - Mn) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (29kB)
	[English] Archive (ZIP) (Appendix A6.2: Garnet 2 chemical maps of the PLV sample HJ-60c - BSE) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (16kB)
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	[English] Archive (ZIP) (Appendix A6.2: Garnet 2 chemical maps of the PLV sample HJ-60c - Fe) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (25kB)
	[English] Archive (ZIP) (Appendix A6.2: Garnet 2 chemical maps of the PLV sample HJ-60c - Garnet2 AI) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (28kB)
	[English] Archive (ZIP) (Appendix A6.2: Garnet 2 chemical maps of the PLV sample HJ-60c - Mg) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (27kB)
	[English] Archive (ZIP) (Appendix A6.2: Garnet 2 chemical maps of the PLV sample HJ-60c - Mn) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (17kB)
	[English] Archive (ZIP) (Appendix B.1: Monazite chemical maps and calculated 206Pb/238U ages of PLV1 granite 11-AI-448 - Mnt1 M12) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (331kB)
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	[English] Archive (ZIP) (Appendix B.1: Monazite chemical maps and calculated 206Pb/238U ages of PLV1 granite 11-AI-448 - Mnt1 M14) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (378kB)
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Abstract

Partial melting of middle to lower crust plays an important role in the evolution of large hot orogens and is a major source of S-type granites in orogenic crust. However, such granites seem to be scarce in the Mesoproterozoic Grenville Province. This project explores the melt productivity of aluminous anatectic rocks of the central Grenville Province, focusing mainly on metapelites of the Plus Value Complex (PLV; mid-P belt) that were metamorphosed during the Ottawan phase of the Grenvillian orogeny, and on leucocratic layers and scarce granite exposures of potentially anatectic origin. The mineral assemblage of the PLV metapelites is consistent with the biotite dehydration melting reaction: biotite + Al-silicate ± plagioclase + quartz = garnet + K-feldspar + melt, and its good preservation is suggestive of significant melt loss during prograde metamorphism. Based on phase equilibria modelling, maximum P–T conditions of about ~10.6–10.7 kb and 860–903 °C, and moderate gradient P–T paths, are inferred. Additionally, phase equilibria modelling predicts that the rocks produced up to 45% of melt with ~ 6–8% having remained in situ. With increasing T the modelled melts show a general increase in K₂O and decrease in Na₂O, an evolution from granodioritic to monzogranitic compositions, and an increase in peraluminosity. Broadly similar trends are also observed in modelled melts using other types of mid-P aluminous rocks from the wider area, and high-P rocks from structurally lower levels. On the other hand, leucocratic layers associated with the PLV metapelites and the granite exposures have minor amounts of garnet, biotite, and (in some cases), sillimanite, and are peraluminous and monzogranites. Monazite in the PLV granites show morphologies and chemical patterns ranging from complex, consistent with several episodes of growth and resorption, to simple, and provide evidence for growth (of part of the monazites, at least) in the presence of melt. Dominant ²⁰⁶Pb/²³⁸U monazite ages range from 1062 ± 17 to 1033 ± 10 Ma and are similar to those of the metamorphic ages of the PLV aluminous rocks (1080 – 1040 Ma) reported from the literature. Even though processes such as mixing of melts, fractional crystallization and wall-rock contamination are not assessed, the PLV granites seem to be related to the PLV aluminous rocks. They most likely represent melts produced by the biotite melting reaction and could be the first documented S-type granites of Ottawan age in the central Grenville Province.

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