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R. A. Shchekoldin
R. A. Shchekoldin
National Mineral Resources University (Mining University)
National Mineral Resources University (Mining University)
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Articles

Geology and metallogeny
  • Date submitted
    2016-11-10
  • Date published
    2013-01-01

Injective sand bodies in lower permian deposits of Novaya Zemlya

Geological setting, composition and morphology of injective sandy bodies in Lower Permian deposits of the south part of Novaya Zemlya are described. Formation of these bodies is interpreted as a result of liquefaction of sandy beds and extrusion of the formed suspension into the host clayey sediments. This process was caused by high sedimentation rates in a prograding submarine fan environment fed with siliciclastics from the rising Urals orogene to the south of Novaya Zemlya.

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R. A. Shchekoldin (2013) Injective sand bodies in lower permian deposits of Novaya Zemlya. Journal of Mining Institute. Vol 200. p. 342.
Stratigraphy, paleontology and regional geology
  • Date submitted
    2016-12-28
  • Date published
    2009-04-01

Cyclicity of the devonian and carboniferous deposits of Novaya Zemlya

Two structural-formational zones are recognized in the Devonian and Carboniferous deposits of Novaya Zemlya: the Barents zone and the Kara zone. The first one is characterized by thick, predominantly carbonate deposits, containing a rich complex of benthic fossils, and corresponds to the shelf paleoenvironments. The second one is characterized by thin hemipelagic argillaceous, lime and siliceous deposits, containing scarce pelagic fossils. This zone is suggested to represent bathyal paleoenvironments (slope and basin floor). The main control on sedimentation in both zones provided relative sea-level rises and falls, which repeated with mean periodicity equal to an age (third-order cycles). Sea-level highstands correspord to periods of low sedimentation rates and stagnation in deep-water zone. Sea-level lowstands were favourable to intensification of sediment gravity flows and better aeration of bottom waters.

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R. A. Shchekoldin (2009) Cyclicity of the devonian and carboniferous deposits of Novaya Zemlya. Journal of Mining Institute. Vol 183. p. 53.