Foraminifera and Paleogene Stratigraphy of the Submarine Lomonosov Ridge, Arctic Ocean

Abstract

Materials on the Paleogene biostratigraphy of the Lomonosov Ridge in the Arctic Ocean are presented, including new data on foraminifers from the M0004A borehole section (interval 390–391 m) in its polar part. The studied benthic foraminifers are united into the complex with Reticulophragmium coksuvorovae of the upper Zelandian–the lower Thanetian stages, which includes some characteristic species of the North Atlantic and West Siberian basins. It also contains information about the connection of these Arctic seas in the Paleocene time.