Blar i forfatter "Hanken, Nils-Martin"

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    • Cold-seep macrofaunal assemblages in cores from Vestnesa Ridge, eastern Fram Strait, during the past 45000 years 

      Thomsen, Elsebeth; Rasmussen, Tine Lander; Sztybor, Kamila; Hanken, Nils-Martin; Tendal, Ole Secher; Uchman, Alfred (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-22)
      Four cores from 1200 m water depth from Vestnesa Ridge on the western Svalbard margin in the eastern Fram Strait were studied for their content of fossil macro-faunas. Three of the cores were collected from a pockmark with active methane seepage, and one core (control core) was taken just outside the seepage area for comparison. Together the cores cover the last 45 000 years (mid-late Weichselian ...

    • Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard 

      Uchman, Alfred; Hanken, Nils-Martin; Nielsen, Jesper Kresten; Grundvåg, Sten-Andreas; Piasecki, Stefan (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      Late Early Permian–lowermost Triassic carbonate, siliceous (spiculites) and clastic marine sediments in the Marmierfjellet area (Isfjorden, central Spitsbergen) contain a relatively diverse and abundant trace fossil assemblage providing important information about the depositional processes. The Vøringen Member (Late Artinskian–Kungurian) of the Kapp Starostin Formation (Late Artinskian–? Changhsingian) ...

    • First record of catacrinid crinoid from the Lower Permian of Spitsbergen 

      Gorzelak, Przemyslaw; Blazejowski, Blazej; Uchman, Alfred; Hanken, Nils-Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      An early Permian (late Artinskian–Roadian) cladid crinoid (Catacrinidae gen. et sp. indet.) is reported for the first time from the Vøringen Member of the Kapp Starostin Formation of Spitsbergen. The specimen is partly articulated and preserves a considerable part of its stalk and a complete cup, but only the proximal portions of its arms. Thus, it can− not be identified with any degree of ...

    • Late Quaternary terrigenous plant and coaly fragments found at Vestnesa Ridge, Fram Strait: implications for postglacial plant colonization at Svalbard 

      Hanken, Nils-Martin; Sztybor, Kamila; Høeg, Helge I.; Karlsen, Dag Arild; Rasmussen, Tine Lander; Abay, Tesfamariam Berhane (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-23)
      One of four marine cores of glacial sediments collected from a water depth of about 1200 m at Vestnesa Ridge (west of Svalbard) contained small fragments of coal, charcoal and moss. This material was restricted to a single level, and 14C dating of bivalves both above and below indicates an age of c. 18.0–15.5 kyr BP. Chemical analyses of the coal indicate that the provenance area was from the northern ...