/ UiT Norges arktiske universitet
 

Anette Högström.JPG

Högström, Anette


Førsteamanuensis
Seksjon naturvitenskap


Telefon: 776 45723
Mobil jobb / Mobil privat: /
Epost : anette.hogstrom@uit.no
Campus: Tromsø
Kontor/besøksadresse : TMU 135 / Tromsø Museum
Funksjon : Førsteamanuensis i Geologi

Forskningsprosjekter

 

Concentric Impact Structures in the Palaeozoic – the Siljan and Lockne craters (CISP)

(Part of; the Swedish Deep Drilling Program, SDDP)

 http://www.sddp.se/

 http://www.sddp.se/CISP

 http://www.sddp.se/sciencetechnology

The SDDP initiative intends to study deep crustal mechanics through the means of scientific drilling.

(CISP) Concentric Impact Structures in the Palaeozoic - the Siljan and Lockne craters; Large impact structures are a key to understanding a diverse set of scientific problems since they record essentials about the geological history where they occur. The ambition of CISP is to characterize the large Lockne and Siljan crater structures, with decisive features in common. The Siljan structure, the largest impact structure in Western Europe, and Lockne, which is the best accessible and studied impact formed in relatively deep sea, occurred at the supposedly Himalayan-type Caledonian mountain front in Sweden. Their development therefore expresses interaction between a gigantic over-thrust plate and Baltica through about 80 Ma. The most important apparent interaction was depressing Baltica’s west flank to form the trough where both craters formed. Another was tectonic stress that influenced shape and mineralization in the craters. It is all the more important to elucidate the less understood complications that can help to understand other craters. Major issues are the importance of basement lithology and structure, depth of water or sediment cover at the time of impact.
In addition to impact tectonics, the effect on life from the impact event can be studied in the Lockne area where records of post-impact re-colonization are found. The Siljan crater, with its renowned carbonate mud mounds, also contains unique sedimentological and palaeontological records preserved solely within the crater structure.

Arbeider i CRIStin

  • Ebbestad, Jan Ove R.; Högström, Anette; Frisk, Åsa M.; Martma, Tõnu; Kaljo, Dimitri; Kröger, Björn; Pärnaste, Helje. Terminal Ordovician stratigraphy of the Siljan district, Sweden. GFF 2014; Volum 00. ISSN 1103-5897.s 1 - 21.s doi: 10.1080/11035897.2014.945620.

  • Ebbestad, Jan Ove R.; Frýda, Jirí; Wagner, Peter J.; Horný, Radvan J.; Isakar, Mare; Stewart, Sarah; Percival, Ian G.; Bertero, Verònica; Rohr, David M.; Peel, John S.; Blodgett, Robert B.; Högström, Anette. Biogeography of Ordovician and Silurian gastropods, monoplacophorans and mimospirids. Geological Society of London 2013 ISBN 9781862393738.s 199 - 220.

  • Högström, Anette; Jensen, Sören; Palacios, Teodoro; Ebbestad, Jan Ove R.. New information on the Ediacaran-Cambrian transition in the Vestertana Group, Finnmark, northern Norway, from trace fossils and organic-walled microfossils. Norsk Geologisk Tidsskrift 2013; Volum 93. ISSN 0029-196X.s 95 - 106.

  • Lehnert, Oliver; Meinhold, Guido; Bergström, Stig M.; Calner, Mikael; Ebbestad, Jan Ove R.; Egenhoff, Sven; Frisk, Åsa M.; Hannah, Judith L.; Högström, Anette; Huff, Warren D.; Juhlin, Christopher; Maletz, Jörg; Stein, Holly Jayne; Sturkell, Erik; Vandenbroucke, Thijs R.A.. New Ordovician-Silurian drill cores from the Siljan impact structure in central Sweden: an integral part of the Swedish Deep Drilling Program. GFF 2012; Volum 134 (2). ISSN 1103-5897.s 87 - 98.s doi: 10.1080/11035897.2012.692707.

  • Ebbestad, Jan Ove R.; Högström, Anette; Frisk, Åsa M.. Gastropods and tergomyans from the Upper Ordovician (Viru-Harju) of the Fågelsång area, Scania, southern Sweden.. Journal of Systematic Palaeontology 2012. ISSN 1477-2019.s doi: 10.1080/14772019.2012.660994.

  • Juhlin, Christoffer; Sturkell, Erik; Ebbestad, Jan Ove R.; Lehnert, Oliver; Högström, Anette; Meinhold, Guido. A new interpretation of the sedimentary cover in the western Siljan Ring area, central Sweden, based on seismic data.. Tectonophysics 2012; Volum 580. ISSN 0040-1951.s 88 - 99.s doi: 10.1016/j.tecto.2012.08.040.

  • Lehnert, Oliver; Meinhold, Guido; Bergström, Stig M.; Calner, Mikael; Ebbestad, Jan Ove R.; Eggenhoff, Sven; Frisk, Åsa M.; Hannah, Judith L.; Högström, Anette; Juhlin, Christoffer; Maletz, Jörg; Sturkell, Erik; Stein, Holly; Vandenbroucke, Thijs. Preliminary report on new drill cores from the Siljan impact structure in central Sweden – an integral part of the Swedish Deep Drilling Program.. GFF 2012; Volum 134 (2). ISSN 1103-5897.s 87 - 98.s doi: 10.1080/11035897.2012.692707.

  • Kröger, Björn; Ebbestad, Jan Ove R.; Högström, Anette; Frisk, Åsa M.. Mass concentration of Hirnantian cephalopods from the Siljan District, Sweden; taxonomy, palaeoecology and palaeobiogeographic relationships. Fossil Record 2011; Volum 14 (1). ISSN 1435-1943.s 35 - 53.s doi: 10.1002/mmng.201000014.

  • Högström, Anette; Sturkell, Erik; Ebbestad, Jan Ove R.; Lindström, Mauritz; Ormö, Jens. Concentric impact structures in the Palaeozoic of Sweden - the Lockne and Siljan craters.. GFF 2010; Volum 132 (1). ISSN 1103-5897.s 65 - 70.

  • Ebbestad, Jan Ove R.; Högström, Anette; Høyberget, Magne; Jensen, Sören; Palacios, Teodoro; Taylor, Wendy L.. Trilobites of the Lower Cambrian Duolbasgaissa Formation, the Digermul Peninsula, northern Norway.. Nordic Geological Wintermeeting 2014-01-08 - 2014-01-10 2014.

  • Högström, Anette; Ebbestad, Jan Ove R.; Jensen, Sören; Palacios, Teodoro; Meinhold, Guido; Taylor, Wendy L.; Novis, Linn Kristin; Agic, Heda; Moczydlowska, Malgorzata. New occurrences and extension of the stratigraphical range of discoidal Ediacara-type fossils on the Digermul Peninsula, northern Norway. The Pal Ass annual meeting 2014-12-16 - 2014-12-19 2014.

  • Sturkell, Erik; Juhlin, Christopher; Ormö, Jens; Ebbestad, Jan Ove R.; Greiling, Reinhard O.; Högström, Anette; Kontny, Agnes M.; Lehnert, Oliver; Meinhold, Guido. Concentric Impact Structures in the Palaeozoic (CISP). Nordic Geological Wintermeeting 2014-01-08 - 2014-01-10 2014.

  • Högström, Anette; Ebbestad, Jan Ove R.; Jensen, Sören; Palacios, Teodoro; Høyberget, Magne; Taylor, Wendy L.. The Lower Cambrian Duolbasgaissa Formation, the Digermul Peninsula, northern Norway.. Nordic Geological Wintermeeting 2014-01-08 - 2014-01-10 2014.

  • Högström, Anette; Ebbestad, Jan Ove R.; Jensen, Sören; Palacios, Teodoro; Høyberget, Magne; Taylor, Wendy L.. Evolution of early biota and complex ecosystems: the Digermul Succession of northern Norway.. Nordic Geological Wintermeeting 2014-01-08 - 2014-01-10 2014.

  • Ellefsen, Christine Haugsten; Högström, Anette. Naturen som museum – hvordan funger film som verktøy for museumsformidling for barn?. Nettmuseum 3 – Tromsø edition 2013-03-12 - 2013-03-12 2013.

  • Lehnert, Oliver; Meinhold, Guido; Bergström, Stig M.; Calner, Mikael; Ebbestad, Jan Ove R.; Eggenhoff, Sven; Frisk, Åsa M.; Högström, Anette; Maletz, Jörg. The Siljan Meteorite Crater in central Sweden – an integral of the Swedish Deep Drilling Program (SDDP).. IODP – ICDP meeting 2012-03-07 - 2012-03-09 2012.

  • Högström, Anette. Geologiens Dag 2012. Geologisk Excursion og verksted for barn opp til 12 2012-09-15 - 2012.

  • Högström, Anette; Ellefsen, Christine Haugsten. Oppdrag Spor. formidlings prosjekt for barn 2012-09-01 - 2012.

  • Lehnert, Oliver; Meinhold, Guido; Bergström, Stig M.; Calner, Mikael; Ebbestad, Jan Ove R.; Eggenhoff, Sven; Frisk, Åsa M.; Högström, Anette; Maletz, Jörg. The Siljan Impact Structure - an important integralfor reconstructiong the early Palaeozoic History of Baltoscandia. Geologische Vereinigung/Sediment 2012 2012-09-23 - 2012.

  • Lehnert, Oliver; Meinhold, Guido; Bergström, Stig M.; Calner, Mikael; Ebbestad, Jan Ove R.; Eggenhoff, Sven; Frisk, Åsa M.; Högström, Anette; Maletz, Jörg. The Siljan Ring in central Sweden – a window into the Palaeozoic history of Baltoscandia.. European Geosciences Union General Assembly 2012 2012-04-22 - 2012-04-27 2012.

  • Högström, Anette. Geologins Dag 2011 - Oppdag Geologien i Telegrafbukta Gjennom Barnas Øyne. Geologisk excursion for barn opp til 10 2011-09-10 - 2011.

  • Högström, Anette. Hvordan var det? – Å tolke fossiler.. Ottar 2011; Volum 2 (285). ISSN 0030-6703.s 14 - 19.

  • Högström, Anette; Ebbestad, Jan Ove R.; Palacios, Teodoro; Jensen, Soren. New trace fossil finds, acritarchs and trilobites from latest Ediacaran – Cambrian deposits of the Digermul Peninsula, Finnmark, Northern Norway.. The 2d Wiman meeting 2011-11-17 - 2011-11-18 2011.

  • Högström, Anette; Ebbestad, Jan Ove R.; Palacios, Teodoro; Jensen, Soren. New olenellid trilobites of the Digermul Peninsula, Finnmark, northern Norway – constraints on lower Cambrian biostratigraphy.. Annual Meeting of the Palaeontological Association 2011-12-17 - 2011-12-19 2011.

  • Högström, Anette; Ebbestad, Jan Ove R.; Frisk, Åsa M.. Om ett dike i Siljansringen ur ett historiskt klimatperspektiv.. Geologiskt forum : Geologiska Föreningens populärvetenskapliga tidskrift 2010 (68). ISSN 1104-4721.s 20 - 23.




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