1887

Abstract

Summary

A large amount of data on the structure of the sedimentary cover in the Eurasian Basin was obtained during the Russian seismic expeditions in 2011, 2012, and 2014. These data allow to analyze the zoning of the Eurasian Basin structure.

A number of the reliably traceable linear magnetic anomalies are fewer in the direction from west to east. Eastward from 75° E, there is a clear asymmetry of the potential fields anomalies about to the modern spreading axis, located in the rift valley of the Gakkel Ridge. The observed pattern of magnetic anomalies can be explained by the spreading axis jump in the eastern part of the basin in the Miocene. On a large area in the Eurasian Basin, linear magnetic anomalies are questionable. Joint interpretation of magnetic, gravity, and new seismic data provided opportunity to outline in the Eurasian Basin: Gakkel Ridge area (up to magnetic anomaly 5, ∼10–12 ma), area formed from the Early Oligocene (borders near anomaly 13), area formed from the Early Eocene (borders near anomaly 24), and extensive area of the Mesozoic oceanic basement.

The geodynamic model of the Eurasian Basin structure formation should be designed based on the new seismic data.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201701311
2017-06-12
2020-02-22
Loading full text...

Full text loading...

References

  1. Berglar, K.
    , et al. [2016] Initial Opening of the Eurasian Basin, Arctic Ocean. Front. Earth Sci.4:91. doi: 10.3389/feart.2016.00091.
    https://doi.org/10.3389/feart.2016.00091. [Google Scholar]
  2. Glebovsky, V.Y.
    , et al. [2006] Formation of the Eurasia Basin in the Arctic Ocean as inferred from geohistorical analysis of the anomalous magnetic field. Geotectonics, 40(4), 21–42.
    [Google Scholar]
  3. Jokat, W., Micksch, U.
    [2004] Sedimentary structure of the Nansen and Amundsen Basins, Arctic Ocean. Geophysical Research Letters, 31, 1–4.
    [Google Scholar]
  4. Kristoffersen, Y.
    [2000] The Eurasia Basin: an update from a decade of geoscientific research. Polarforschung, 68, 11–18.
    [Google Scholar]
  5. Levitan, M.A.
    [2015] Sedimentation Rates in the Arctic Ocean during the Last Five Marine Isotope Stages. Oceanology, 55(3), 425–433.
    [Google Scholar]
  6. Piskarev, A.L.
    [2004] The Basement Structure of the Eurasia Basin and Central Ridges in the Arctic Ocean. Geotectonics, 38(6), 443–448.
    [Google Scholar]
  7. Rekant, P. V.
    , et al. [2015] History of formation of the sedimentary cover of Arctic Basin. Multychannel seismic approach. Regional geology and metallogeny, 64, 11–27.
    [Google Scholar]
  8. Rekant, P. V., Gusev, E.A.
    [2016] Sediments in the Gakkel Ridge rift zone (Arctic Ocean): structure and history. Geology and Geophysics, 57(9), 1634–1640.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701311
Loading
/content/papers/10.3997/2214-4609.201701311
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error