A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes
Abstract The relationship between disposition of metamorphic isograds and early strain history is examined for the Sulitjelma Fold Nappe of the central Scandes. Evidence for stratigraphic inversion and the widespread inversion of the garnet isograd is reviewed, and new evidence for the nature of ear...
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Language: | English |
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Cambridge University Press (CUP)
1987
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Online Access: | http://dx.doi.org/10.1017/s0016756800017039 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800017039 |
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crcambridgeupr:10.1017/s0016756800017039 2024-09-15T18:38:08+00:00 A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes Boyle, A. P. 1987 http://dx.doi.org/10.1017/s0016756800017039 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800017039 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 124, issue 5, page 451-466 ISSN 0016-7568 1469-5081 journal-article 1987 crcambridgeupr https://doi.org/10.1017/s0016756800017039 2024-07-24T04:03:41Z Abstract The relationship between disposition of metamorphic isograds and early strain history is examined for the Sulitjelma Fold Nappe of the central Scandes. Evidence for stratigraphic inversion and the widespread inversion of the garnet isograd is reviewed, and new evidence for the nature of early Scandian deformation is presented. A two-stage model is presented which explains the inversions by (i) an initial phase of horizontal compression resulting in crustal thickening by vertical stretching during closure of a marginal basin, followed by (ii) continued horizontal compression and crustal thickening by eastward-directed nappe emplacement. The emplacement of the Sulitjelma Fold Nappe during the latter phase of progressive simple-shear-dominated deformation was accompanied by the development of sheath fold geometries and the overturning of isotherms to produce the widespread inversion of the garnet isograd. Article in Journal/Newspaper Sulitjelma Cambridge University Press Geological Magazine 124 5 451 466 |
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Cambridge University Press |
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English |
description |
Abstract The relationship between disposition of metamorphic isograds and early strain history is examined for the Sulitjelma Fold Nappe of the central Scandes. Evidence for stratigraphic inversion and the widespread inversion of the garnet isograd is reviewed, and new evidence for the nature of early Scandian deformation is presented. A two-stage model is presented which explains the inversions by (i) an initial phase of horizontal compression resulting in crustal thickening by vertical stretching during closure of a marginal basin, followed by (ii) continued horizontal compression and crustal thickening by eastward-directed nappe emplacement. The emplacement of the Sulitjelma Fold Nappe during the latter phase of progressive simple-shear-dominated deformation was accompanied by the development of sheath fold geometries and the overturning of isotherms to produce the widespread inversion of the garnet isograd. |
format |
Article in Journal/Newspaper |
author |
Boyle, A. P. |
spellingShingle |
Boyle, A. P. A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
author_facet |
Boyle, A. P. |
author_sort |
Boyle, A. P. |
title |
A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
title_short |
A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
title_full |
A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
title_fullStr |
A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
title_full_unstemmed |
A model for stratigraphic and metamorphic inversions at Sulitjelma, central Scandes |
title_sort |
model for stratigraphic and metamorphic inversions at sulitjelma, central scandes |
publisher |
Cambridge University Press (CUP) |
publishDate |
1987 |
url |
http://dx.doi.org/10.1017/s0016756800017039 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800017039 |
genre |
Sulitjelma |
genre_facet |
Sulitjelma |
op_source |
Geological Magazine volume 124, issue 5, page 451-466 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756800017039 |
container_title |
Geological Magazine |
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124 |
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5 |
container_start_page |
451 |
op_container_end_page |
466 |
_version_ |
1810482460769648640 |