Geochemistry and age model of sediment core BDP96-1 (BDP-2-A)

Cite as:

Müller, Jens; Melles, Martin (2008): Geochemistry and age model of sediment core BDP96-1 (BDP-2-A). Deutsches GeoForschungsZentrum GFZ. https://doi.org/10.1594/GFZ.SDDB.1138

Status

I N R E V I E W : Müller, Jens; Melles, Martin (2008): Geochemistry and age model of sediment core BDP96-1 (BDP-2-A). Deutsches GeoForschungsZentrum GFZ. https://doi.org/10.1594/GFZ.SDDB.1138

Abstract

Within the framework of the Baikal Drilling Project (BDP), a 192 m long sediment core (BDP-96-1) was recovered from the Academician Ridge, a submerged topographic high between the North and Central Basins of Lake Baikal. Sedimentological, clay mineralogical and geochemical investigations were carried out on the core interval between 90 and 124 m depth, corresponding to ca. 2.4–3.4 Ma. The aim was to reconstruct the climatic and tectonic history of the continental region during the intensification of Northern Hemisphere glaciation in Late Pliocene time. A major climate change occurred in the Lake Baikal area at about 2.65 Ma. Enhanced physical weathering in the catchment, mirrored in the illite to smectite ratio, and temporarily reduced bioproduction in the lake, reflected by the diatom abundance, evidence a change towards a colder and more arid climate, probably associated with an intensification of the Siberian High.

Authors

Müller, Jens
Melles, Martin

Keywords

, Geology

GCMD Science Keywords

EARTH SCIENCE > Land Surface > Erosion/Sedimentation > Sediment Compositon

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