Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits
By the Late Carboniferous, Late Paleozoic northward drift of the continent Laurentia had carried Nova Scotia from the southern dry climate belt into the equatorial rainy belt. Carboniferous amalgamation of Laurentia with the southern continent Gondwana enclosed the area within the new supercontinent...
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ftuninewbrunojs:oai:ojs.journals.lib.unb.ca:article/2039 2023-12-03T10:20:34+01:00 Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits Chandler, F. W. 1998-04-01 application/pdf https://journals.lib.unb.ca/index.php/ag/article/view/2039 eng eng Atlantic Geoscience Society https://journals.lib.unb.ca/index.php/ag/article/view/2039/2403 https://journals.lib.unb.ca/index.php/ag/article/view/2039 Copyright (c) 2015 Atlantic Geology Atlantic Geoscience; Vol. 34 No. 1 (1998) 2564-2987 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1998 ftuninewbrunojs 2023-11-04T23:59:24Z By the Late Carboniferous, Late Paleozoic northward drift of the continent Laurentia had carried Nova Scotia from the southern dry climate belt into the equatorial rainy belt. Carboniferous amalgamation of Laurentia with the southern continent Gondwana enclosed the area within the new supercontinent Pangea, imposing a gradually drying seasonal tropical climate. Disagreement exists on whether the early Pennsylvanian climate of the Euramerican coal province was everwet or seasonal. Abundant paleopedological evidence, including calcrete-bearing vertisols, shows that during formation of Westphalian C to Stephanian coals in Nova Scotia, the climate was tropical and seasonal with a pronounced dry season, but interpretation of Westphalian A-B coal-bearing sequences lacks this form of evidence. Development of calcrete-bearing vertisols in alluvial fan deposits of the Westphalian A New Glasgow formation indicate that a tropical climate with a pronounced dry season was already in force by early Westphalian time. During the dry season, the coal swamps of the early Westphalian Joggins and Springhill Mines formations were fed by groundwater from coeval alluvial fan deposits of the Polly Brook Formation at the basin margin. Sedimento-logical evidence indicates that, similarly, groundwater flowed northward from the toe of the New Glasgow alluvial fan, but correlative palustrine sediments have not been found on land in the New Glasgow area. The possibility remains of an early Westphalian coalfield associated with die New Glasgow formation to the north under die Northumberland Strait and Gulf of St. Lawrence. Formation of the Yava sandstone-hosted lead deposit in the fluvial Silver Mine Formation of Cape Breton Island, a stratigraphic equivalent of the Cumberland Basin coal swamps, indicates that such deposits can form in fluvial strata deposited under a tropical seasonal climate with a pronounced dry season. RÉSUMÉ A la fin du Carbonifere supérieur, le déplacement vers le nord du Paleozolque ... Article in Journal/Newspaper Breton Island University of New Brunswick: Centre for Digital Scholarship Journals Breton Island ENVELOPE(141.383,141.383,-66.800,-66.800) Canada The Toe ENVELOPE(-59.167,-59.167,-62.333,-62.333) Atlantic Geology 34 1 |
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University of New Brunswick: Centre for Digital Scholarship Journals |
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ftuninewbrunojs |
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English |
description |
By the Late Carboniferous, Late Paleozoic northward drift of the continent Laurentia had carried Nova Scotia from the southern dry climate belt into the equatorial rainy belt. Carboniferous amalgamation of Laurentia with the southern continent Gondwana enclosed the area within the new supercontinent Pangea, imposing a gradually drying seasonal tropical climate. Disagreement exists on whether the early Pennsylvanian climate of the Euramerican coal province was everwet or seasonal. Abundant paleopedological evidence, including calcrete-bearing vertisols, shows that during formation of Westphalian C to Stephanian coals in Nova Scotia, the climate was tropical and seasonal with a pronounced dry season, but interpretation of Westphalian A-B coal-bearing sequences lacks this form of evidence. Development of calcrete-bearing vertisols in alluvial fan deposits of the Westphalian A New Glasgow formation indicate that a tropical climate with a pronounced dry season was already in force by early Westphalian time. During the dry season, the coal swamps of the early Westphalian Joggins and Springhill Mines formations were fed by groundwater from coeval alluvial fan deposits of the Polly Brook Formation at the basin margin. Sedimento-logical evidence indicates that, similarly, groundwater flowed northward from the toe of the New Glasgow alluvial fan, but correlative palustrine sediments have not been found on land in the New Glasgow area. The possibility remains of an early Westphalian coalfield associated with die New Glasgow formation to the north under die Northumberland Strait and Gulf of St. Lawrence. Formation of the Yava sandstone-hosted lead deposit in the fluvial Silver Mine Formation of Cape Breton Island, a stratigraphic equivalent of the Cumberland Basin coal swamps, indicates that such deposits can form in fluvial strata deposited under a tropical seasonal climate with a pronounced dry season. RÉSUMÉ A la fin du Carbonifere supérieur, le déplacement vers le nord du Paleozolque ... |
format |
Article in Journal/Newspaper |
author |
Chandler, F. W. |
spellingShingle |
Chandler, F. W. Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
author_facet |
Chandler, F. W. |
author_sort |
Chandler, F. W. |
title |
Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
title_short |
Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
title_full |
Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
title_fullStr |
Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
title_full_unstemmed |
Geology of and climatic indicators in the Westphalian A New Glasgow formation, Nova Scotia, Canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
title_sort |
geology of and climatic indicators in the westphalian a new glasgow formation, nova scotia, canada: implications for the genesis of coal and of sandstone-hosted lead deposits |
publisher |
Atlantic Geoscience Society |
publishDate |
1998 |
url |
https://journals.lib.unb.ca/index.php/ag/article/view/2039 |
long_lat |
ENVELOPE(141.383,141.383,-66.800,-66.800) ENVELOPE(-59.167,-59.167,-62.333,-62.333) |
geographic |
Breton Island Canada The Toe |
geographic_facet |
Breton Island Canada The Toe |
genre |
Breton Island |
genre_facet |
Breton Island |
op_source |
Atlantic Geoscience; Vol. 34 No. 1 (1998) 2564-2987 |
op_relation |
https://journals.lib.unb.ca/index.php/ag/article/view/2039/2403 https://journals.lib.unb.ca/index.php/ag/article/view/2039 |
op_rights |
Copyright (c) 2015 Atlantic Geology |
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Atlantic Geology |
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34 |
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1 |
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1784268007091994624 |