Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology
n shelf areas surrounding southern Sweden, offshore settings contain evidence of repeated subsidence and uplift during the Phanerozoic. Earlier published fission track (FT) studies in adjacent areas suggest extensive exhumation since the Late Paleozoic. The aim of this study is to reveal pre-Cretace...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_236380 2023-05-15T16:12:55+02:00 Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology Cederbom, C. 3.1 Lithosphere Dynamics, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum 2001 https://gfzpublic.gfz-potsdam.de/pubman/item/item_236380 unknown info:eu-repo/semantics/altIdentifier/doi/10.1016/s0012-821X(01)00300-4 https://gfzpublic.gfz-potsdam.de/pubman/item/item_236380 Earth and Planetary Science Letters 550 - Earth sciences info:eu-repo/semantics/article 2001 ftgfzpotsdam https://doi.org/10.1016/s0012-821X(01)00300-4 2022-09-14T05:55:15Z n shelf areas surrounding southern Sweden, offshore settings contain evidence of repeated subsidence and uplift during the Phanerozoic. Earlier published fission track (FT) studies in adjacent areas suggest extensive exhumation since the Late Paleozoic. The aim of this study is to reveal pre-Cretaceous thermotectonic events that affected the south-central part of the Fennoscandian Shield. Twenty-four apatite samples from the Precambrian basement in southern Sweden were analyzed by the FT dating method. The samples were collected at the present-day crustal surface, which more or less coincides with a sub-Cambrian paleosurface. Apatite FT ages range between not, vert, similar150 and not, vert, similar315 Ma, and the mean track lengths range between not, vert, similar12.3 and not, vert, similar13.6 μm. Together, the FT results confirm that all samples from southern Sweden were totally annealed, i.e. heated above at least 100°C, during the Phanerozoic. Furthermore, three areas with different trends among the FT results have been discerned. FT ages younger than 200 Ma are characteristic for samples from the southeast. A large discrepancy among the FT results is recorded in the northwest. In between, a belt with 230–280 Ma ages is distinguished. A tentative reconstruction of the pre-Cretaceous thermotectonic history in the southern Fennoscandian Shield suggests that Caledonian foreland basin deposits were responsible for the Palaeozoic heating event that affected southern Sweden. Tectonic vertical movements in the basement were probably triggered by the load, resulting in a depth differentiation in the basin. Cooling of southern Sweden took place during the Carboniferous–Middle Triassic due to uplift and exhumation of the southwestern part of the shield. Subsequent Jurassic exhumation is recorded in southeastern and parts of northwestern south Sweden. Article in Journal/Newspaper Fennoscandian GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Earth and Planetary Science Letters 188 1-2 199 209 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
topic |
550 - Earth sciences |
spellingShingle |
550 - Earth sciences Cederbom, C. Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
topic_facet |
550 - Earth sciences |
description |
n shelf areas surrounding southern Sweden, offshore settings contain evidence of repeated subsidence and uplift during the Phanerozoic. Earlier published fission track (FT) studies in adjacent areas suggest extensive exhumation since the Late Paleozoic. The aim of this study is to reveal pre-Cretaceous thermotectonic events that affected the south-central part of the Fennoscandian Shield. Twenty-four apatite samples from the Precambrian basement in southern Sweden were analyzed by the FT dating method. The samples were collected at the present-day crustal surface, which more or less coincides with a sub-Cambrian paleosurface. Apatite FT ages range between not, vert, similar150 and not, vert, similar315 Ma, and the mean track lengths range between not, vert, similar12.3 and not, vert, similar13.6 μm. Together, the FT results confirm that all samples from southern Sweden were totally annealed, i.e. heated above at least 100°C, during the Phanerozoic. Furthermore, three areas with different trends among the FT results have been discerned. FT ages younger than 200 Ma are characteristic for samples from the southeast. A large discrepancy among the FT results is recorded in the northwest. In between, a belt with 230–280 Ma ages is distinguished. A tentative reconstruction of the pre-Cretaceous thermotectonic history in the southern Fennoscandian Shield suggests that Caledonian foreland basin deposits were responsible for the Palaeozoic heating event that affected southern Sweden. Tectonic vertical movements in the basement were probably triggered by the load, resulting in a depth differentiation in the basin. Cooling of southern Sweden took place during the Carboniferous–Middle Triassic due to uplift and exhumation of the southwestern part of the shield. Subsequent Jurassic exhumation is recorded in southeastern and parts of northwestern south Sweden. |
author2 |
3.1 Lithosphere Dynamics, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum |
format |
Article in Journal/Newspaper |
author |
Cederbom, C. |
author_facet |
Cederbom, C. |
author_sort |
Cederbom, C. |
title |
Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
title_short |
Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
title_full |
Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
title_fullStr |
Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
title_full_unstemmed |
Phanerozoic, pre-Cretaceous thermotectonic events in southern Sweden revealed by fission track thermochronology |
title_sort |
phanerozoic, pre-cretaceous thermotectonic events in southern sweden revealed by fission track thermochronology |
publishDate |
2001 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_236380 |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Earth and Planetary Science Letters |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/s0012-821X(01)00300-4 https://gfzpublic.gfz-potsdam.de/pubman/item/item_236380 |
op_doi |
https://doi.org/10.1016/s0012-821X(01)00300-4 |
container_title |
Earth and Planetary Science Letters |
container_volume |
188 |
container_issue |
1-2 |
container_start_page |
199 |
op_container_end_page |
209 |
_version_ |
1765998526767038464 |