P.V. REKANT (VSEGEI), V.YA. KABAN’KOV, I.A. ANDREEVA (VNIIOkeangeologia), O.V. PETROV, B.V. BELYATSKY, N.N. SOBOLEV (VSEGEI)

Bedrock sampling in the Lomonosov Ridge as a key to understanding its geological nature

Comprehensive analisis of geological data indicate the heterogeneity of the Lomonosov Ridge basement. Siberian segment is considered to be a northern edge of the Kotel’ny Island block with the Timanian or Grenville basement. The Central segment is coincides with Caledonian deformations front with middle and high grade metamorphism. The North­American segment is supposed to be a hinterland of early Caledonian metamorphic event.
Keywords: Lomonosov Ridge, Hyperborean platform, Arctida, geological bedrocks sampling, IRD, Caledonian deformations front.