{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/28599"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/28599","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"A Targeted Investigation of the Upper Contact Unit of the Sudbury Igneous Complex in the North Range, Sudbury Impact Structure, Canada","abstract":"The Sudbury Igneous Complex (SIC) represents the remnant of a crystalline impact melt sheet of the Sudbury impact structure; and is historically and presently a strategic exploration target sustaining the region's prolific mining camp. In order to better understand the SIC, it is critical to investigate the chilled upper contact of the SIC, which has historically received little recognition. Through field observations, whole rock geochemistry, petrography, and electron microprobe analysis, this study concludes that the SIC upper contact is in fact extensive across the North Range of the SIC. Additionally, the geochemistry of the SIC units, offset dykes, and upper contact unit (UCU) of the SIC presented here lead to the conclusion that the UCU roof rocks represent a more accurate proxy than the offset dykes for the initial composition of the SIC. Finally, this study indicates that the UCU lithology is no longer considered an intrusive melt of the basal Onaping Formation breccias.","abstract_html":"The Sudbury Igneous Complex (SIC) represents the remnant of a crystalline impact melt sheet of the Sudbury impact structure; and is historically and presently a strategic exploration target sustaining the region's prolific mining camp. In order to better understand the SIC, it is critical to investigate the chilled upper contact of the SIC, which has historically received little recognition. Through field observations, whole rock geochemistry, petrography, and electron microprobe analysis, this study concludes that the SIC upper contact is in fact extensive across the North Range of the SIC. Additionally, the geochemistry of the SIC units, offset dykes, and upper contact unit (UCU) of the SIC presented here lead to the conclusion that the UCU roof rocks represent a more accurate proxy than the offset dykes for the initial composition of the SIC. Finally, this study indicates that the UCU lithology is no longer considered an intrusive melt of the basal Onaping Formation breccias.","abstract_has_math":false,"creators":["Debono, Lindsay E"],"institution":"The University of Western Ontario","degree_name":"M Sc","degree_level":null,"degree_discipline":"Geology","degree_department":null,"school":null,"contributors":[],"advisors":["Osinski, Gordon R."],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-28","date_published":"2018-09-28","updated_at":"2026-07-27T21:56:03Z","subjects":["Sudbury Igneous Complex","impact melt sheets","geochemistry","mineralogy","impact cratering"],"languages":["en_ca"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/28599","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Osinski, Gordon R."]},{"key":"dc:creator","label":"Author","values":["Debono, Lindsay E"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-07-10T16:13:06Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-07-10T16:13:06Z"]},{"key":"dc:date.issued","label":"Date","values":["2018-09-28"]},{"key":"dc:publisher","label":"Institution","values":["The University of Western Ontario"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Geology"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M Sc"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sudbury Igneous Complex","impact melt sheets","geochemistry","mineralogy","impact cratering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_ca"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14721/28599"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."]},{"key":"dc:description.abstract","label":"Abstract","values":["The Sudbury Igneous Complex (SIC) represents the remnant of a crystalline impact melt sheet of the Sudbury impact structure; and is historically and presently a strategic exploration target sustaining the region's prolific mining camp. In order to better understand the SIC, it is critical to investigate the chilled upper contact of the SIC, which has historically received little recognition. Through field observations, whole rock geochemistry, petrography, and electron microprobe analysis, this study concludes that the SIC upper contact is in fact extensive across the North Range of the SIC. Additionally, the geochemistry of the SIC units, offset dykes, and upper contact unit (UCU) of the SIC presented here lead to the conclusion that the UCU roof rocks represent a more accurate proxy than the offset dykes for the initial composition of the SIC. Finally, this study indicates that the UCU lithology is no longer considered an intrusive melt of the basal Onaping Formation breccias."]},{"key":"dc:title","label":"Title","values":["A Targeted Investigation of the Upper Contact Unit of the Sudbury Igneous Complex in the North Range, Sudbury Impact Structure, Canada"]}]}],"canonical_facts":{"dc:contributor.advisor":["Osinski, Gordon R."],"dc:creator":["Debono, Lindsay E"],"dc:date.accessioned":["2025-07-10T16:13:06Z"],"dc:date.available":["2025-07-10T16:13:06Z"],"dc:date.issued":["2018-09-28"],"dc:description":["The thesis cover page in the PDF document includes references to Western University’s previous institutional repository platform, known as Scholarship@Western, and links to that platform (beginning with ir.lib.uwo.ca). In citing or referring to this thesis, use the DOI or handle from this page instead. Sample citation: Author name, \"Thesis title.\" (Year). Western University Open Repository. https://doi.org/10.71858/123456."],"dc:description.abstract":["The Sudbury Igneous Complex (SIC) represents the remnant of a crystalline impact melt sheet of the Sudbury impact structure; and is historically and presently a strategic exploration target sustaining the region's prolific mining camp. In order to better understand the SIC, it is critical to investigate the chilled upper contact of the SIC, which has historically received little recognition. Through field observations, whole rock geochemistry, petrography, and electron microprobe analysis, this study concludes that the SIC upper contact is in fact extensive across the North Range of the SIC. Additionally, the geochemistry of the SIC units, offset dykes, and upper contact unit (UCU) of the SIC presented here lead to the conclusion that the UCU roof rocks represent a more accurate proxy than the offset dykes for the initial composition of the SIC. Finally, this study indicates that the UCU lithology is no longer considered an intrusive melt of the basal Onaping Formation breccias."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/28599"],"dc:language.iso":["en_ca"],"dc:publisher":["The University of Western Ontario"],"dc:subject":["Sudbury Igneous Complex","impact melt sheets","geochemistry","mineralogy","impact cratering"],"dc:title":["A Targeted Investigation of the Upper Contact Unit of the Sudbury Igneous Complex in the North Range, Sudbury Impact Structure, Canada"],"dc:type":["thesis"],"thesis:degree_discipline":["Geology"],"thesis:degree_name":["M Sc"]},"updated_at":"2026-07-27T21:56:03Z"}