Impact structures as indicators of cratonic denudation |
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Author: | Hietala, S.1,2; Hall, A. M.3; Putkinen, N.4; |
Organizations: |
1Department of Geology, University of Tartu, Ravila 14A, 50411 Tartu, Estonia 2Geological Survey of Finland, P.O. Box 1237, FI-70211, Kuopio, Finland 3Department of Physical Geography, Stockholm University, S-10691 Stockholm, Sweden
4Geological Survey of Finland, P.O. Box 97, FI-67101, Kokkola, Finland
5Muon Solutions Oy, Rakkarinne 9, FI-96900, Saarenkylä, Finland 6Kerttu Saalasti Institute, University of Oulu, Pajatie 5, 85500 Nivala, Finland 7Arctic Planetary Science Institute, Lihtaajantie 1 E 27, 44150 Äänekoski, Finland |
Format: | abstract |
Version: | published version |
Access: | open |
Online Access: | PDF Full Text (PDF, 0.5 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2021053132347 |
Language: | English |
Published: |
University of Helsinki,
2021
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Publish Date: | 2021-05-31 |
Description: |
AbstractMeteorite impact structures can provide important information on long-term denudation on the Earth’s cratons. Impact structures in the Fennoscandian Shield contain rocks (i.e., impactites), that have developed during the collision, and, possibly, remnants of the pre-impact sedimentary rocks. The crater depressions may also be filled with post-impact sediments. Sedimentary deposits in impact structures have not been much utilized before in studying the erosion-burial history of the Fennoscandian craton. Here, we use published data on meteorite impact structures to reconstruct the depth of erosion in southern Finland and neighboring platform areas. Post-impact erosion depths were estimated using an empirical relationship derived from well-preserved impact structures. Results support ultra-slow erosion of the basement and sedimentary cover continuing over hundreds of millions of years. see all
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Series: |
Report - Institute of Seismology. University of Helsinki. S |
ISSN: | 0357-3060 |
ISSN-L: | 0357-3060 |
ISBN: | 978-952-10-9604-4 |
Volume: | S-71 |
Pages: | 27 - 30 |
Host publication: |
Lithosphere 2021 : eleventh symposium on structure, composition and evolution of the lithosphere. Programme and extended abstracts, Virtual meeting January 19 –20, 2021 |
Host publication editor: |
Kukkonen, Ilmo Veikkolainen, Toni Heinonen, Suvi Karell, Fredrik Kozlovskaya, Elena Luttinen, Arto Nikkilä, Kaisa Nykänen, Vesa Poutanen, Markku Skyttä, Pietari Tanskanen, Eija Tiira, Timo |
Conference: |
Lithosphere |
Field of Science: |
1171 Geosciences |
Subjects: | |
Copyright information: |
© 2021 The Authors. |