Scotland–Finland Precambrian correlations
Isotopic age determinations indicate the generally co-eval nature of major episodes of earth history shown by the Precambrian rocks of Scotland and Finland, viz. (1) the c. 2 800—2 600 m.y. Scourian and Presvecokarelidic episodes, (2) the c. 2 200 m.y. Inverian episode and the c. 2 300 m.y. episode...
Published in: | Bulletin of the Geological Society of Finland |
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Geological Society of Finland
1975
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ftdoajarticles:oai:doaj.org/article:cdc7db248a074794aa12b0935c8bec1e 2023-05-15T17:00:00+02:00 Scotland–Finland Precambrian correlations D.R. Bowes 1975-12-01T00:00:00Z https://doi.org/10.17741/bgsf/47.1-2.001 https://doaj.org/article/cdc7db248a074794aa12b0935c8bec1e EN eng Geological Society of Finland http://www.geologinenseura.fi/bulletin/Volume47/sgs_bt_047_pages_001_012.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/47.1-2.001 0367-5211 1799-4632 https://doaj.org/article/cdc7db248a074794aa12b0935c8bec1e Bulletin of the Geological Society of Finland, Vol 47, Iss 1-2, Pp 1-12 (1975) Geology QE1-996.5 article 1975 ftdoajarticles https://doi.org/10.17741/bgsf/47.1-2.001 2022-12-31T08:52:29Z Isotopic age determinations indicate the generally co-eval nature of major episodes of earth history shown by the Precambrian rocks of Scotland and Finland, viz. (1) the c. 2 800—2 600 m.y. Scourian and Presvecokarelidic episodes, (2) the c. 2 200 m.y. Inverian episode and the c. 2 300 m.y. episode in Finland, (3) the c. 2.1 b.y. deposition of the Loch Maree Group in Scotland and the Jatulian quartzite, Karelian schists and related geosynclinal deposits in Finland, and (4) the c. 1 975—1 700 m.y. Laxfordian and Svecokarelian episodes. The existence of spatially connected belts in Precambrian times is suggested by the correspondence in both the sequence of development and the orientations of structural elements resulting from polyphase deformation in the successively formed Precambrian orogenic belts. This matching of complex structural frameworks implies that, before the initiation of the British-Scandinavian Caledonides, the Baltic Shield extended westward to include northwestern Britain and the continental shelf of the eastern North Atlantic Ocean. The Caledonian belt would then have developed on a plate of continental crust, or between the separated parts of a rifted continental crustal segment. Article in Journal/Newspaper karelia* karelian North Atlantic Directory of Open Access Journals: DOAJ Articles Bulletin of the Geological Society of Finland 47 1-2 1 12 |
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English |
topic |
Geology QE1-996.5 |
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Geology QE1-996.5 D.R. Bowes Scotland–Finland Precambrian correlations |
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Geology QE1-996.5 |
description |
Isotopic age determinations indicate the generally co-eval nature of major episodes of earth history shown by the Precambrian rocks of Scotland and Finland, viz. (1) the c. 2 800—2 600 m.y. Scourian and Presvecokarelidic episodes, (2) the c. 2 200 m.y. Inverian episode and the c. 2 300 m.y. episode in Finland, (3) the c. 2.1 b.y. deposition of the Loch Maree Group in Scotland and the Jatulian quartzite, Karelian schists and related geosynclinal deposits in Finland, and (4) the c. 1 975—1 700 m.y. Laxfordian and Svecokarelian episodes. The existence of spatially connected belts in Precambrian times is suggested by the correspondence in both the sequence of development and the orientations of structural elements resulting from polyphase deformation in the successively formed Precambrian orogenic belts. This matching of complex structural frameworks implies that, before the initiation of the British-Scandinavian Caledonides, the Baltic Shield extended westward to include northwestern Britain and the continental shelf of the eastern North Atlantic Ocean. The Caledonian belt would then have developed on a plate of continental crust, or between the separated parts of a rifted continental crustal segment. |
format |
Article in Journal/Newspaper |
author |
D.R. Bowes |
author_facet |
D.R. Bowes |
author_sort |
D.R. Bowes |
title |
Scotland–Finland Precambrian correlations |
title_short |
Scotland–Finland Precambrian correlations |
title_full |
Scotland–Finland Precambrian correlations |
title_fullStr |
Scotland–Finland Precambrian correlations |
title_full_unstemmed |
Scotland–Finland Precambrian correlations |
title_sort |
scotland–finland precambrian correlations |
publisher |
Geological Society of Finland |
publishDate |
1975 |
url |
https://doi.org/10.17741/bgsf/47.1-2.001 https://doaj.org/article/cdc7db248a074794aa12b0935c8bec1e |
genre |
karelia* karelian North Atlantic |
genre_facet |
karelia* karelian North Atlantic |
op_source |
Bulletin of the Geological Society of Finland, Vol 47, Iss 1-2, Pp 1-12 (1975) |
op_relation |
http://www.geologinenseura.fi/bulletin/Volume47/sgs_bt_047_pages_001_012.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/47.1-2.001 0367-5211 1799-4632 https://doaj.org/article/cdc7db248a074794aa12b0935c8bec1e |
op_doi |
https://doi.org/10.17741/bgsf/47.1-2.001 |
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Bulletin of the Geological Society of Finland |
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47 |
container_issue |
1-2 |
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1 |
op_container_end_page |
12 |
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1766052645302173696 |