Browsing Institutt for geofag by Author "Ullmann, Clemens V."

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  • Initial results of coring at Prees, Cheshire Basin, UK (ICDP JET project): Towards an integrated stratigraphy, timescale, and Earth system understanding for the Early Jurassic 
    Hesselbo, Stephen P.; Al-Suwaidi, Aisha; Baker, Sarah J.; Ballabio, Giorgia; Belcher, Claire M.; Bond, Andrew; Boomer, Ian; Bos, Remco; Bjerrum, Christian J.; Bogus, Kara; Boyle, Richard; Browning, James V.; Butcher, Alan R.; Condon, Daniel J.; Copestake, Philip; Daines, Stuart; Dalby, Christopher; Damaschke, Magret; Damborenea, Susana E.; Deconinck, Jean-Francois; Dickson, Alexander J.; Fendley, Isabel M.; Fox, Calum P.; Fraguas, Angela; Frieling, Joost; Gibson, Thomas A.; He, Tianchen; Hickey, Kat; Hinnov, Linda A.; Hollaar, Teuntje P.; Huang, Chunju; Hudson, Alexander J. L.; Jenkyns, Hugh C.; Idiz, Erdem; Jiang, Mengjie; Krijgsman, Wout; Korte, Christoph; Leng, Melanie J.; Lenton, Timothy M.; Leu, Katharina; Little, Crispin T. S.; Macniocaill, Conall; Manceñido, Miguel O.; Mather, Tamsin A.; Mattioli, Emanuela; Miller, Kenneth G.; Newton, Robert J.; Page, Kevin N.; Pálfy, József; Pieńkowski, Gregory; Porter, Richard J.; Poulton, Simon W.; Riccardi, Alberto C.; Riding, James B.; Roper, Ailsa; Ruhl, Micha; Silva, Ricardo L.; Storm, Marisa S.; Suan, Guillaume; Szűcs, Dominika; Thibault, Nicolas; Uchman, Alfred; Stanley, James N.; Ullmann, Clemens V.; Van De Schootbrugge, Bas; Vickers, Madeleine Larissa; Wadas, Sonja; Whiteside, Jessica H.; Wignall, Paul B.; Wonik, Thomas; Xu, Weimu; Zeeden, Christian; Zhao, Ke (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract. Drilling for the International Continental Scientific Drilling Program (ICDP) Early Jurassic Earth System and Timescale project (JET) was undertaken between October 2020 and January 2021. The drill site is situated ...
  • Middle to Late Jurassic palaeoclimatic and palaeoceanographic trends in the Euro-Boreal region: Geochemical insights from East Greenland belemnites 
    Vickers, Madeleine Larissa; Hougård, Iben W.; Alsen, Peter; Ullmann, Clemens V.; Jelby, Mads Engholm; Bedington, Michael; Korte, Christoph (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    During the Middle and Late Jurassic, Europe and the Boreal regions formed a network of semi-restricted, relatively shallow marine basins. Consequently, stable oxygen (δ18O) and carbon (δ13C) isotope records from belemnites ...
  • Paleocene-Eocene age glendonites from the Mid-Norwegian Margin - indicators of cold snaps in the hothouse? 
    Vickers, Madeleine Larissa; Jones, Morgan Thomas; Longman, Jack; Evans, David; Ullmann, Clemens V.; Stokke, Ella Wulfsberg; Vickers, Martin; Frieling, Joost; Harper, Dustin T.; Clementi, Vincent J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Abstract. The International Ocean Discovery Program (IODP) Expedition 396 to the mid-Norwegian margin recovered > 1300 m of pristinely preserved, volcanic-ash-rich sediments deposited during the late Paleocene and early ...
  • The ikaite to calcite transformation: Implications for palaeoclimate studies 
    Vickers, Madeleine Larissa; Vickers, Martin; Rickaby, Rosalind E.M.; Wu, Han; Bernasconi, Stefano M.; Ullmann, Clemens V.; Bohrmann, Gerhard; Spielhagen, Robert F.; Kassens, Heidemarie; Pagh Schultz, Bo; Alwmark, Carl; Thibault, Nicolas; Korte, Christoph (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Marine sedimentary ikaite is the parent mineral to glendonite, stellate pseudomorphs found throughout the geological record which are most usually composed of calcite. Ikaite is known to be metastable at earth surface ...