34rd Geological winter meeting Number 1, 2019 Abstracts and Proceedings of the Geological Society of Norway Edited by: Hans Arne Nakrem and Ann Mari Husås www.geologi.no © Norsk Geologisk Forening (NGF) , 2021 ISBN: 978-82-8347-049-2 NGF Abstracts and Proceedings NGF Abstracts and Proceedings was first published in 2001. The objective of this series is to generate a common publishing channel of all scientific meetings held in Norway with a geological content. Disclaimer: The views, thoughts, and opinions expressed in the abstracts be- long solely to the authors, and not necessarily to the Geological Society of Norway. Editors: Hans Arne Nakrem, UiO/NHM Ann Mari Husås, NGF Orders to: Norsk Geologisk Forening c/o Norges Geologiske Undersøkelse N-7491 Trondheim, Norway E-mail: [email protected] www.geologi.no Published by: Norsk Geologisk Forening c/o Norges Geologiske Undersøkelse N-7491 Trondheim, Norway E-mail: [email protected] www.geologi.no NGF Abstracts and Proceedings of the Geological Society of Norway Number 1, 2021 Vinterkonferansen 2021 Digital, January 6th-8th, 2020 Editors: Hans Arne Nakrem, UiO/NHM Ann Mari Husås Conference committee: Thorbjørn Kaland, HVL (chairman) Christine Fickler, NTNU Beate L.S. Olsen, Equinor Johannes Jakob, NGU Vegard Vetti, Stibyggjaren AS Hans Arne Nakrem, UiO/NHM Guri Venvik, NGU Torbjørn Dahlgren, Equinor Anette Högstraøm, UiT Ivar Berthling, Forskningsrådet Øystein Nordgulen, NGU/NGF Ann Mari Husås, Geological Society of Norway Welcome to the Winter meeting 2021 The fact that geology is the most interesting and important topic is getting more and more clear. The fast-growing populations and the lack of resources to provide a good way of living for every- one, indicate the need of understanding the earth systems better. The challenges are to improve the supply of food and clean water, secure mineral resources and energy production and avoid environmental problems and climate change. The geologist has an important role to solve all these challenges. To fill this role, we all need to update our competence, share and discus new ideas, and make new connections, in order to learn and understand more. The Norwegian Winter meeting 2021 is the best place to start a new year, with new knowledge and inspiration. Thorbjørn Kaland Chairman Sponsors and supporters: NGF gratefully acknowledges support from : CONTRIBUTORS Abdelmalak, M.M. P. 1 Carlsen, B. P. 11 Acosta-Góngora, P. P. 1, 2, 22 Castelltort, S. P. 6 Ahokas, J. P. 42 Chand, S. P. 77 Alee, Aa. P. 85 Coint, N. P. 12 Alterskjær, C. P. 85 Collins, D.S. P. 84 Anda, E. P. 62 Cordonnier, B. P. 39 Andersen, J.L. P. 23, 59 Dagestad, A. P. 69 Andersen, T. P. 8, 13 Dahl, R. P. 3, 12, 19 Andersson, M. P. 1, 2, 3, 22 Dahlgren, S. P. 54 Andreassen, K. P. 46 Dahlin, A. P. 13 Angvik, T.L. P. 3, 12 Dam, G. P. 44 Arntsen, M.L. P. 78 Davidsen, B. P. 24 Arvesen, B. P. 85 De La Cruz, E. P. 13 Augland, L.E. P. 38, 67 Dehls, J. P. 8, 14, 62 Aurand, K. P. 4, 35 Diesing, M. P. 14, 77 Austrheim, H. P. 18 Dietze, M. P. 68 Baeten, N.J. P. 14 Dolan, M.F.J. P. 15, 77 Bajard, M. P. 4 Dombrovski, E. P. 15 Baker, D.R. P. 10 Dong, D. P. 16 Bakke, J. 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