A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt
Summary Conglomerate beds occur in an Upper Ordovician—Lower Silurian clastic sequence on the northeastern side of the Newfoundland Central Paleozoic Mobile Belt. They contain scattered pebbles and cobbles dispersed in a finely laminated sandstone and siltstone matrix. Laminations are generally 5–20...
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Language: | English |
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Cambridge University Press (CUP)
1974
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Online Access: | http://dx.doi.org/10.1017/s0016756800041595 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800041595 |
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crcambridgeupr:10.1017/s0016756800041595 2024-03-03T08:46:41+00:00 A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt McCann, A. M. Kennedy, M. J. 1974 http://dx.doi.org/10.1017/s0016756800041595 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800041595 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 111, issue 6, page 549-564 ISSN 0016-7568 1469-5081 Geology journal-article 1974 crcambridgeupr https://doi.org/10.1017/s0016756800041595 2024-02-08T08:40:33Z Summary Conglomerate beds occur in an Upper Ordovician—Lower Silurian clastic sequence on the northeastern side of the Newfoundland Central Paleozoic Mobile Belt. They contain scattered pebbles and cobbles dispersed in a finely laminated sandstone and siltstone matrix. Laminations are generally 5–20 mm thick and the clasts 10–300 mm across. The laminations are locally disrupted by the clasts. These laminations have subsequently been tectonically flattened into augen around the clasts and locally disrupted by boudinage. It is concluded that these conglomerate beds represent icerafted glacio-marine deposits interbedded with turbidites which were probably deposited in a locally restricted marine environment. The deposits are interpreted on the basis of scattered fossil localities as being of Late Ordovician–Early Silurian age. They are compared with deposits of similar age elsewhere in the North Atlantic region. Article in Journal/Newspaper Newfoundland North Atlantic Cambridge University Press Geological Magazine 111 6 549 564 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology |
spellingShingle |
Geology McCann, A. M. Kennedy, M. J. A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
topic_facet |
Geology |
description |
Summary Conglomerate beds occur in an Upper Ordovician—Lower Silurian clastic sequence on the northeastern side of the Newfoundland Central Paleozoic Mobile Belt. They contain scattered pebbles and cobbles dispersed in a finely laminated sandstone and siltstone matrix. Laminations are generally 5–20 mm thick and the clasts 10–300 mm across. The laminations are locally disrupted by the clasts. These laminations have subsequently been tectonically flattened into augen around the clasts and locally disrupted by boudinage. It is concluded that these conglomerate beds represent icerafted glacio-marine deposits interbedded with turbidites which were probably deposited in a locally restricted marine environment. The deposits are interpreted on the basis of scattered fossil localities as being of Late Ordovician–Early Silurian age. They are compared with deposits of similar age elsewhere in the North Atlantic region. |
format |
Article in Journal/Newspaper |
author |
McCann, A. M. Kennedy, M. J. |
author_facet |
McCann, A. M. Kennedy, M. J. |
author_sort |
McCann, A. M. |
title |
A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
title_short |
A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
title_full |
A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
title_fullStr |
A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
title_full_unstemmed |
A probable glacio-marine deposit of Late Ordovician—Early Silurian age from the north central Newfoundland Appalachian Belt |
title_sort |
probable glacio-marine deposit of late ordovician—early silurian age from the north central newfoundland appalachian belt |
publisher |
Cambridge University Press (CUP) |
publishDate |
1974 |
url |
http://dx.doi.org/10.1017/s0016756800041595 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800041595 |
genre |
Newfoundland North Atlantic |
genre_facet |
Newfoundland North Atlantic |
op_source |
Geological Magazine volume 111, issue 6, page 549-564 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756800041595 |
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Geological Magazine |
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111 |
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6 |
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549 |
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564 |
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1792502735269003264 |