Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton
Synopsis On the western and eastern sides of the North Atlantic craton, rocks between about 1·7 b.y. and 1·2 b.y. old are represented by thick basinal assemblages. Thin platformal successions cover the intervening region. The clastic component of these rocks was largely derived from the southeast wh...
Published in: | Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
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Cambridge University Press (CUP)
1979
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Online Access: | http://dx.doi.org/10.1017/s0080456800012849 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800012849 |
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crcambridgeupr:10.1017/s0080456800012849 2024-03-03T08:44:01+00:00 Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton Young, Grant M. 1979 http://dx.doi.org/10.1017/s0080456800012849 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800012849 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Earth and Environmental Science Transactions of the Royal Society of Edinburgh volume 70, issue 13-14, page 323-336 ISSN 1755-6910 1755-6929 General Earth and Planetary Sciences General Environmental Science journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0080456800012849 2024-02-08T08:30:54Z Synopsis On the western and eastern sides of the North Atlantic craton, rocks between about 1·7 b.y. and 1·2 b.y. old are represented by thick basinal assemblages. Thin platformal successions cover the intervening region. The clastic component of these rocks was largely derived from the southeast where the Elsonian orogen might have been an important source terrane. Widespread mafic igneous activity (about 1·2 b.y. ago) in the central platformal region preceded orogenic movements in the basinal areas (Racklan-Carolinidian-Grenville orogeny). The Grenville orogen may have contributed significant amounts of clastic debris for a second cycle of sedimentary accumulation(∼ 1·2 b.y.–∼ 0·8 b.y.). The upper part of this cycle typically contains red beds and evaporites and, in the North American Cordillera, shows evidence of contemporaneous block faulting and extensional tectonism. These movements culminated in the East Kootenay and Hayhook orogenies and ushered in a third period of deposition about 850 m.y. ago. The third sequence includes glaciogenic rocks in the Cordilleran and East Greenland geosynclines. The basic geotectonic elements (platforms and geosynclines) of the North Atlantic craton were established as much as 1·7 b.y. ago, but continental fragmentation on the borders of the craton may not have taken place until early Phanerozoic times. Article in Journal/Newspaper East Greenland Greenland North Atlantic Cambridge University Press Greenland Earth and Environmental Science Transactions of the Royal Society of Edinburgh 70 13-14 323 336 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science Young, Grant M. Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
Synopsis On the western and eastern sides of the North Atlantic craton, rocks between about 1·7 b.y. and 1·2 b.y. old are represented by thick basinal assemblages. Thin platformal successions cover the intervening region. The clastic component of these rocks was largely derived from the southeast where the Elsonian orogen might have been an important source terrane. Widespread mafic igneous activity (about 1·2 b.y. ago) in the central platformal region preceded orogenic movements in the basinal areas (Racklan-Carolinidian-Grenville orogeny). The Grenville orogen may have contributed significant amounts of clastic debris for a second cycle of sedimentary accumulation(∼ 1·2 b.y.–∼ 0·8 b.y.). The upper part of this cycle typically contains red beds and evaporites and, in the North American Cordillera, shows evidence of contemporaneous block faulting and extensional tectonism. These movements culminated in the East Kootenay and Hayhook orogenies and ushered in a third period of deposition about 850 m.y. ago. The third sequence includes glaciogenic rocks in the Cordilleran and East Greenland geosynclines. The basic geotectonic elements (platforms and geosynclines) of the North Atlantic craton were established as much as 1·7 b.y. ago, but continental fragmentation on the borders of the craton may not have taken place until early Phanerozoic times. |
format |
Article in Journal/Newspaper |
author |
Young, Grant M. |
author_facet |
Young, Grant M. |
author_sort |
Young, Grant M. |
title |
Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
title_short |
Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
title_full |
Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
title_fullStr |
Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
title_full_unstemmed |
Correlation of middle and upper Proterozoic strata of the northern rim of the North Atlantic craton |
title_sort |
correlation of middle and upper proterozoic strata of the northern rim of the north atlantic craton |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0080456800012849 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800012849 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland North Atlantic |
genre_facet |
East Greenland Greenland North Atlantic |
op_source |
Earth and Environmental Science Transactions of the Royal Society of Edinburgh volume 70, issue 13-14, page 323-336 ISSN 1755-6910 1755-6929 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0080456800012849 |
container_title |
Earth and Environmental Science Transactions of the Royal Society of Edinburgh |
container_volume |
70 |
container_issue |
13-14 |
container_start_page |
323 |
op_container_end_page |
336 |
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1792499478279749632 |