A shift in heavy and clay mineral provenance indicates a middle Miocene onset of a perennial sea ice cover in the Arctic Ocean

А. Krylov, А.; A. Andreeva, Irina; Vogt, Christoph; Backman, Jan; V. Krupskaya, V.; E. Grikurov, G.; Moran, Kathryn; Shoji, Hitoshi

doi:10.1029/2007pa001497

Public

A shift in heavy and clay mineral provenance indicates a middle Miocene onset of a perennial sea ice cover in the Arctic Ocean

Shared by NobleBlocks on Mar 1, 2008 • 12:00 AM UTC

Authors:

А. А. Krylov

Irina A. Andreeva

Christoph Vogt

Abstract

During the Arctic Coring Expedition (ACEX), a 428‐m‐thick sequence of Upper Cretaceous to Quaternary sediments was penetrated. The mineralogical composition of the upper 300 m of this sequence is presented here for the first time. Heavy and clay mineral associations indicate a major and consistent s...

Subject

Geology

Provenance

Arctic

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