Kalliomäki, H, Torvela, TM, Moreau, J et al. (1 more author) (2014) Relationships between basin architecture, basin closure, and occurrence of sulphide-bearing schists: an example from Tampere Schist Belt, Finland. Journal of the Geological Society, 171 (5). 659 - 671. ISSN 0016-7649
Abstract
We present field observations from the Palaeoproterozoic volcano-sedimentary Tampere palaeobasin, where the primary structures have been exceptionally well preserved. We use the observations to construct a new tectonic model for the southeastern margin of the Tampere basin during its inversion and subsequent closure. The observed volcano-sedimentary and structural features suggest a change in the local structural style from thick-skinned inversion to thin-skinned thrusting, in order to accommodate the crustal shortening during basin closure. Furthermore, it is suggested that there is a genetic relationship between the interpreted palaeothrust and the sulphide-bearing schist horizons in the study area. On a more general note, the results infer that presently subvertical mineralised shear zones may have originally been gently dipping, further suggesting that the mineralised fluids may not necessarily have been sourced from great depths (i.e. from deep within the basement).
Metadata
Item Type: | Article |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © 2014, Geological Society. This is an author produced version of a paper published in Journal of the Geological Society. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Feb 2015 12:19 |
Last Modified: | 03 Nov 2015 15:14 |
Published Version: | http://dx.doi.org/10.1144/jgs2013-122 |
Status: | Published |
Publisher: | Geological Society |
Refereed: | Yes |
Identification Number: | 10.1144/jgs2013-122 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:82586 |