Not logged in
Data Publisher for Earth & Environmental Science

Borchers, Andreas; Voigt, Ines; Kuhn, Gerhard; Diekmann, Bernhard (2011): Clay mineral and heavy metal composition of sea-bed surface sediments and pre-Holocene sediment samples taken during POLARSTERN cruise ANT-XXIII/9. PANGAEA,, Supplement to: Borchers, A et al. (2011): Mineralogy of glaciomarine sediments from the Prydz Bay-Kerguelen region: relation to modern depositional environments. Antarctic Science, 23(2), 164-179,

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Surface mineralogical compositions and their association to modern processes are well known from the east Atlantic and south-west Indian sectors of the Southern Ocean, but data from the interface of these areas - the Prydz Bay-Kerguelen region - is still missing. The objective of our study was to provide mineralogical data of reference samples from this region and to relate these mineralogical assemblages to hinterland geology, weathering, transport and depositional processes. Clay mineral assemblages were analysed by means of X-ray diffraction technique. Heavy mineral assemblages were determined by counting of gravity-separated grains under a polarizing microscope. Results show that by use of clay mineral assemblages four mineralogical provinces can be subdivided: i) continental shelf, ii) continental slope, iii) deep sea, iv) Kerguelen Plateau. Heavy mineral assemblages in the fine sand fraction are relatively uniform except for samples taken from the East Antarctic shelf. Our findings show that mineralogical studies on sediment cores from the study area have the potential to provide insights into past shifts in ice-supported transport and activity and provenance of different water masses (e.g. Antarctic slope current and deep western boundary current) in the Prydz Bay-Kerguelen region.
Median Latitude: -63.118438 * Median Longitude: 76.913315 * South-bound Latitude: -68.721000 * West-bound Longitude: 68.117500 * North-bound Latitude: -50.310667 * East-bound Longitude: 85.673667
Date/Time Start: 2007-02-23T15:25:00 * Date/Time End: 2007-03-28T17:46:00
2 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text (use the following character encoding: )