Blar i forfatter "Jelby, Mads Engholm"

Viser treff 1-3 av 3

    • The role of shelf morphology on storm-bed variability and stratigraphic architecture, Lower Cretaceous, Svalbard 

      Grundvåg, Sten-Andreas; Jelby, Mads Engholm; Olaussen, Snorre; Sliwinska, Kasia (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-13)
      The dominance of isotropic hummocky cross‐stratification, recording deposition solely by oscillatory flows, in many ancient storm‐dominated shoreface–shelf successions is enigmatic. Based on conventional sedimentological investigations, this study shows that storm deposits in three different and stratigraphically separated siliciclastic sediment wedges within the Lower Cretaceous succession in ...

    • Sedimentology and palynology of the Lower Cretaceous succession of central Spitsbergen: integration of subsurface and outcrop data 

      Grundvåg, Sten-A; Jelby, Mads Engholm; Śliwińska, Kasia Kamila; Nøhr-Hansen, Henrik; Aadland, Tore; Sandvik, Sara Elvelund; Tennvassås, Ingrid; Engen, Thea; Olaussen, Snorre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-27)
      The Lower Cretaceous succession in Svalbard is commonly considered as an important analogue to age-equivalent strata on the Barents Shelf which are sporadically targeted by exploration wells. In this study, the stratigraphic and genetic relationship between the Rurikfjellet (open marine), Helvetiafjellet (paralic) and Carolinefjellet (open marine) formations of the Lower Cretaceous succession in ...

    • Tempestite facies variability and storm‐depositional processes across a wide ramp: Towards a polygenetic model for hummocky cross‐stratification 

      Jelby, Mads Engholm; Grundvåg, Sten-Andreas; Helland-Hansen, William; Olaussen, Snorre; Stemmerik, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-03)
      The hydrodynamic mechanisms responsible for the genesis and facies variability of shallow‐marine sandstone storm deposits (tempestites) have been intensely debated, with particular focus on hummocky cross‐stratification. Despite being ubiquitously utilized as diagnostic elements of high‐energy storm events, the full formative process spectrum of tempestites and hummocky cross‐stratification is still ...