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Susceptibility raw data of sediment core PS2038-2

Authors
Publisher
PANGAEA
Publication Date
Identifiers
DOI: 10.1594/pangaea.50767
Keywords
  • Ant-Ix/3
  • Awi_Paleo
  • Gravity Corer (Kiel Type)
  • Lazarev Sea
  • Paleoenvironmental Reconstructions From Marine Sediments @ Awi
  • Polarstern
  • Ps18
  • Ps18/185
  • Ps2038-2
  • Susceptibility
  • Susceptibility Unit Awi
  • Ms2C
  • 145 Mm
Disciplines
  • Biology
  • Chemistry
  • Earth Science
  • Geography
  • Logic

Abstract

Geophysical Research Abstracts Vol. 12, EGU2010-8277, 2010 EGU General Assembly 2010 © Author(s) 2010 Holocene laminated biogenic mud in Wood Bay (western Ross Sea, Antarctica): geochemical data and preliminary paleoclimatic interpretation. Ester Colizza (1), Furio Finocchiaro (1), Federico Giglio (2), Gerhard Kuhn (3), Leonardo Langone (2), and Massimo Presti (4) (1) Dipartimento di Geoscienze, University of Trieste, Italy ([email protected]), (2) Istituto Scienze Marine, CNR, Bologna, Italy ([email protected]), (3) AWI, Bremerhaven, Germany ([email protected]), (4) OGS, Trieste, Italy ([email protected]) The study of LGM and Holocene marine sediments is an important goal in Antarctic research and needs high-resolution sequences to reconstruct paleoclimatic events in detail. Literature reports a large number of data coming from inner-shelf bays and fjords, especially around Antarctic peninsula, but also from western Ross Sea. In this note we discuss compositional data from a gravity core (BAY05-45c; 74° 09.7’ S, 165° 57.7’ E; water depth: 1058 m; core length: 445.5 cm) collected in 2005 during the Italian PNRA cruise into the inner part of Wood Bay, in front of the Aviator Ice tongue. Wood Bay sea floor morphology is charcterised by a narrow basin, deeper than 1,000 m, oriented WNW-ESE, and transversally connected, by a 800-m deep sill, to the Drygalski basin, streching NE-SW. Core sediment is composed by laminated biosiliecous mud, with a strong hydrogen sulphide odour and black in colour. Within a few days from core sampling, sediment became oxidized: laminae colour ranges from dark (from dark olive grey to black) to light (from olive grey to olive). Some lighter laminae have cotton-like texture. Data set include X-ray images, magnetic susceptibility, AMS 14C dating, organic carbon, biogenic silica, XRF-scan of major and minor elements. Discussion of the data will point out inferences about sedimentary processes, paleoproductivity and oceanographic condi

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