Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland
The Glover Island Area of western Newfoundland spans the Humber-Dunnage Zone Boundary at the northern end of the Appalachian Orogen. Here a deformed ophiolitic pluton separates schists and gneisses (west) from mafic volcanic rocks (east). To the west, quartzo-feldspathic gneisses of the Cobble Cove...
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Memorial University of Newfoundland
1982
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Online Access: | https://research.library.mun.ca/6744/ https://research.library.mun.ca/6744/1/DouglasAlanKnapp.pdf https://research.library.mun.ca/6744/3/DouglasAlanKnapp.pdf |
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ftmemorialuniv:oai:research.library.mun.ca:6744 2023-10-01T03:54:51+02:00 Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland Knapp, Douglas Alan 1982 application/pdf https://research.library.mun.ca/6744/ https://research.library.mun.ca/6744/1/DouglasAlanKnapp.pdf https://research.library.mun.ca/6744/3/DouglasAlanKnapp.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/6744/1/DouglasAlanKnapp.pdf https://research.library.mun.ca/6744/3/DouglasAlanKnapp.pdf Knapp, Douglas Alan <https://research.library.mun.ca/view/creator_az/Knapp=3ADouglas_Alan=3A=3A.html> (1982) Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland. Doctoral (PhD) thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 1982 ftmemorialuniv 2023-09-03T06:46:00Z The Glover Island Area of western Newfoundland spans the Humber-Dunnage Zone Boundary at the northern end of the Appalachian Orogen. Here a deformed ophiolitic pluton separates schists and gneisses (west) from mafic volcanic rocks (east). To the west, quartzo-feldspathic gneisses of the Cobble Cove Gneiss are structurally overlain by the Keystone Schist. To the east, the ophiolitic Grand Lake Complex is structurally juxtaposed against the Keystone Schist and unconformably overlain by volcanic rocks of the Glover Group. Farther east the Glover Group is unconformably overlain by the Corner Pond Formation and to the south, volcanic rocks and dykes of the Otter Neck Group are unconformably overlain by the Red Point Formation. -- The Cobble Cove Gneiss consists of granodioritic gneiss and metasomatized mafic dykes. It is followed eastward by metamorphosed greywackes, quartzites, conglomerates and mafic volcanics of the Keystone Schist. Intruded by mafic dykes and trondhjemite, cumulate ultramafic and mafic rocks of the Grand Lake Complex are structurally juxtaposed against the Keystone Schist. The Glover Group unconformably overlies the Grand Lake Complex and is divided into a lower metasedimentary unit termed the Kettle Pond Formation which contains abundant clasts derived from the underlying ophiolite, and an upper metavolcanic unit termed the Tuckamore Formation. Pillow basalts and mafic tuffs of the Tuckamore Formation are similar to low-K tholeiites. The Otter Neck Group consists of tholeiitic sheeted dykes and aquagene tuffs intruded by porphyries geochemically comparable to the Tuckamore Formation. It is unconformably overlain by metasediments of the Red Point Formation which are correlated with the Corner Pond Formation. Arenig conodants have been recovered from a newly discovered fossil locality within the Corner Pond Formation. -- The Cobble Cove Gneiss is interpreted as Grenvillian basement overlain by a Paleozoic metaclastic cover represented by the Keystone Schist. The Grand Lake Complex and Otter Neck ... Thesis Baie Verte Newfoundland Memorial University of Newfoundland: Research Repository Baie Verte ENVELOPE(-56.182,-56.182,49.933,49.933) Glover Island ENVELOPE(-100.461,-100.461,58.787,58.787) Kettle Pond ENVELOPE(-56.031,-56.031,51.100,51.100) Red Point ENVELOPE(-55.748,-55.748,52.517,52.517) Verte ENVELOPE(141.192,141.192,-66.740,-66.740) |
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Memorial University of Newfoundland: Research Repository |
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English |
description |
The Glover Island Area of western Newfoundland spans the Humber-Dunnage Zone Boundary at the northern end of the Appalachian Orogen. Here a deformed ophiolitic pluton separates schists and gneisses (west) from mafic volcanic rocks (east). To the west, quartzo-feldspathic gneisses of the Cobble Cove Gneiss are structurally overlain by the Keystone Schist. To the east, the ophiolitic Grand Lake Complex is structurally juxtaposed against the Keystone Schist and unconformably overlain by volcanic rocks of the Glover Group. Farther east the Glover Group is unconformably overlain by the Corner Pond Formation and to the south, volcanic rocks and dykes of the Otter Neck Group are unconformably overlain by the Red Point Formation. -- The Cobble Cove Gneiss consists of granodioritic gneiss and metasomatized mafic dykes. It is followed eastward by metamorphosed greywackes, quartzites, conglomerates and mafic volcanics of the Keystone Schist. Intruded by mafic dykes and trondhjemite, cumulate ultramafic and mafic rocks of the Grand Lake Complex are structurally juxtaposed against the Keystone Schist. The Glover Group unconformably overlies the Grand Lake Complex and is divided into a lower metasedimentary unit termed the Kettle Pond Formation which contains abundant clasts derived from the underlying ophiolite, and an upper metavolcanic unit termed the Tuckamore Formation. Pillow basalts and mafic tuffs of the Tuckamore Formation are similar to low-K tholeiites. The Otter Neck Group consists of tholeiitic sheeted dykes and aquagene tuffs intruded by porphyries geochemically comparable to the Tuckamore Formation. It is unconformably overlain by metasediments of the Red Point Formation which are correlated with the Corner Pond Formation. Arenig conodants have been recovered from a newly discovered fossil locality within the Corner Pond Formation. -- The Cobble Cove Gneiss is interpreted as Grenvillian basement overlain by a Paleozoic metaclastic cover represented by the Keystone Schist. The Grand Lake Complex and Otter Neck ... |
format |
Thesis |
author |
Knapp, Douglas Alan |
spellingShingle |
Knapp, Douglas Alan Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
author_facet |
Knapp, Douglas Alan |
author_sort |
Knapp, Douglas Alan |
title |
Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
title_short |
Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
title_full |
Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
title_fullStr |
Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
title_full_unstemmed |
Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland |
title_sort |
ophiolite emplacement along the baie verte-brompton line at glover island, western newfoundland |
publisher |
Memorial University of Newfoundland |
publishDate |
1982 |
url |
https://research.library.mun.ca/6744/ https://research.library.mun.ca/6744/1/DouglasAlanKnapp.pdf https://research.library.mun.ca/6744/3/DouglasAlanKnapp.pdf |
long_lat |
ENVELOPE(-56.182,-56.182,49.933,49.933) ENVELOPE(-100.461,-100.461,58.787,58.787) ENVELOPE(-56.031,-56.031,51.100,51.100) ENVELOPE(-55.748,-55.748,52.517,52.517) ENVELOPE(141.192,141.192,-66.740,-66.740) |
geographic |
Baie Verte Glover Island Kettle Pond Red Point Verte |
geographic_facet |
Baie Verte Glover Island Kettle Pond Red Point Verte |
genre |
Baie Verte Newfoundland |
genre_facet |
Baie Verte Newfoundland |
op_relation |
https://research.library.mun.ca/6744/1/DouglasAlanKnapp.pdf https://research.library.mun.ca/6744/3/DouglasAlanKnapp.pdf Knapp, Douglas Alan <https://research.library.mun.ca/view/creator_az/Knapp=3ADouglas_Alan=3A=3A.html> (1982) Ophiolite emplacement along the Baie Verte-Brompton Line at Glover Island, western Newfoundland. Doctoral (PhD) thesis, Memorial University of Newfoundland. |
op_rights |
thesis_license |
_version_ |
1778522860017418240 |