Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands
The olistostromal Carmanville ophiolitic mélange of northeastern Newfoundland contains two extensive mafic volcanic and volcaniclastic rafts (4 km × 1 km, 11 km × 7 km), which were previously interpreted as an assemblage of lavas and pyroclastics. These rafts are ? Upper Cambrian – Arenigian in age...
Published in: | Canadian Journal of Earth Sciences |
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Canadian Science Publishing
1981
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crcansciencepubl:10.1139/e81-005 2023-12-17T10:44:39+01:00 Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands Pickerill, R. K. Pajari Jr., G. E. Currie, K. L. 1981 http://dx.doi.org/10.1139/e81-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-005 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 18, issue 1, page 55-70 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1981 crcansciencepubl https://doi.org/10.1139/e81-005 2023-11-19T13:39:12Z The olistostromal Carmanville ophiolitic mélange of northeastern Newfoundland contains two extensive mafic volcanic and volcaniclastic rafts (4 km × 1 km, 11 km × 7 km), which were previously interpreted as an assemblage of lavas and pyroclastics. These rafts are ? Upper Cambrian – Arenigian in age and, prior to tectonic transport and subsequent resedimentation and incorporation into the submarine slides (olistostromes) of the Carmanville ophiolitic mélange, were originally deposited on the slopes of a volcanic edifice (volcanic islands). The primary sedimentation history and depositional environment of the volcanic and volcaniclastic rocks are examined in detail. Four volcaniclastic facies are now recognized (facies 1–4), each differentiated on the basis of megascopic descriptive and genetic criteria. The essential characteristics of each facies are described in detail. These facies essentially represent shallow-water mafic volcanic material resedimented into a deeper water submarine slope or fan valley system by mass-emplacement depositional mechanisms, which included debris, turbidity, and possibly fluidized sediment flows. Normal contour-following bottom currents could possibly have been responsible for depositing or at least reworking some of the volcaniclastic siltstones of facies 3. Facies 1–4 were introduced into a deeper water environment itself characterized by the formation of massive and pillowed lavas and their hyaloclastic equivalents (facies 5) envisaged as the end product of deposition from submarine seamounts and guyots. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 18 1 55 70 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Pickerill, R. K. Pajari Jr., G. E. Currie, K. L. Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
topic_facet |
General Earth and Planetary Sciences |
description |
The olistostromal Carmanville ophiolitic mélange of northeastern Newfoundland contains two extensive mafic volcanic and volcaniclastic rafts (4 km × 1 km, 11 km × 7 km), which were previously interpreted as an assemblage of lavas and pyroclastics. These rafts are ? Upper Cambrian – Arenigian in age and, prior to tectonic transport and subsequent resedimentation and incorporation into the submarine slides (olistostromes) of the Carmanville ophiolitic mélange, were originally deposited on the slopes of a volcanic edifice (volcanic islands). The primary sedimentation history and depositional environment of the volcanic and volcaniclastic rocks are examined in detail. Four volcaniclastic facies are now recognized (facies 1–4), each differentiated on the basis of megascopic descriptive and genetic criteria. The essential characteristics of each facies are described in detail. These facies essentially represent shallow-water mafic volcanic material resedimented into a deeper water submarine slope or fan valley system by mass-emplacement depositional mechanisms, which included debris, turbidity, and possibly fluidized sediment flows. Normal contour-following bottom currents could possibly have been responsible for depositing or at least reworking some of the volcaniclastic siltstones of facies 3. Facies 1–4 were introduced into a deeper water environment itself characterized by the formation of massive and pillowed lavas and their hyaloclastic equivalents (facies 5) envisaged as the end product of deposition from submarine seamounts and guyots. |
format |
Article in Journal/Newspaper |
author |
Pickerill, R. K. Pajari Jr., G. E. Currie, K. L. |
author_facet |
Pickerill, R. K. Pajari Jr., G. E. Currie, K. L. |
author_sort |
Pickerill, R. K. |
title |
Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
title_short |
Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
title_full |
Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
title_fullStr |
Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
title_full_unstemmed |
Resedimented volcaniclastics in the Carmanville area, northeastern Newfoundland—depositional remnants of Early Palaeozoic oceanic islands |
title_sort |
resedimented volcaniclastics in the carmanville area, northeastern newfoundland—depositional remnants of early palaeozoic oceanic islands |
publisher |
Canadian Science Publishing |
publishDate |
1981 |
url |
http://dx.doi.org/10.1139/e81-005 http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-005 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Earth Sciences volume 18, issue 1, page 55-70 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e81-005 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
18 |
container_issue |
1 |
container_start_page |
55 |
op_container_end_page |
70 |
_version_ |
1785563219453018112 |