Lomonosov ridge

Alexey L. Piskarev, Victor V. Butsenko, Andrey A. Chernykh, Mikhail V. Ivanov, Valery D. Kaminsky, Victor A. Poselov, Vasily A. Savin

Research output

Abstract

The Lomonosov Ridge is situated between oceanic abyssal regions of the Eurasian Basin, on the one side, and the region of the Central Arctic Uplifts including the abyssal Makarov Basin - on the other. As its morphology and internal structure indicate, it consists of three distinct segments. The shallowest (= 400 m) Canada-Greenland segment is composed mostly by felsic and metamorphic rocks (basic igneous - at the part facing Alpha-Ridge). In the Near-Polar segment the ridge has double-crested top with the basin in-between. The structural trend here is at acute angle to the ridge axis and upper crust consists of basic crystalline rocks. The 12 km-thick upper crust of the 150 km-wide Siberian segment of the Lomonosov Ridge consists mainly of felsic and metamorphic rocks. The ridge's continental crystalline crust is 20-22 km thick, with upper and lower crusts thickness of about half of the above. Neogene-Pleistocene hemipelagic, Paleogene bathyal and possible Cretaceous deposits comprise the sedimentary cover.

Original languageEnglish
Title of host publicationGeologic Structures of the Arctic Basin
PublisherSpringer Nature
Pages157-185
Number of pages29
ISBN (Electronic)9783319777429
ISBN (Print)9783319777412
DOIs
Publication statusPublished - 11 Jun 2018

Publication series

NameGeologic Structures of the Arctic Basin

Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Physics and Astronomy(all)

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