Gottschalk, Julia; Skinner, Luke C; Lippold, Jörg; Jaccard, Samuel L; Vogel, Hendrik; Frank, Norbert; Waelbroeck, Claire (2015): Opal in sediment core MD07-3076Q during the last 68 kyrs [dataset]. Department of Earth Sciences, University of Cambridge, PANGAEA, https://doi.org/10.1594/PANGAEA.845076, In: Gottschalk, J et al. (2015): Productivity- and ocean circulation changes in the sub-Antarctic Atlantic during the last deglaciation and Marine Isotope Stage 3 [dataset publication series]. Department of Earth Sciences, University of Cambridge, PANGAEA, https://doi.org/10.1594/PANGAEA.845078
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Related to:
Gottschalk, Julia; Skinner, Luke C; Lippold, Jörg; Vogel, Hendrik; Frank, Norbert; Jaccard, Samuel L; Waelbroeck, Claire (2016): Biological and physical controls in the Southern Ocean on past millennial-scale atmospheric CO2 changes. Nature Communications, 7(11539), https://doi.org/10.1038/ncomms11539
Coverage:
Latitude: -44.153330 * Longitude: -14.228170
Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 7.715 m
Event(s):
MD07-3076 (MD07-3076Q) * Latitude: -44.153330 * Longitude: -14.228170 * Elevation: -3770.0 m * Campaign: MD159 (IMAGES XV - Pachiderme) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Square Core System (CASQS)
Comment:
This dataset includes sub-millennially resolved biogenic silica (opal) measurements in the central sub-Antarctic Atlantic determined via Fourier Transform Infrared Spectroscopy (FTIRS). 230Th-normalized fluxes have been determined for key intervals, i.e. the deglaciation and Antarctic warming event (AIM) 1. Sedimentary opal content and opal fluxes are consistent, which indicates that opal percentages faithfully mirror preserved opal fluxes in MD07-3076Q sediments.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Gottschalk, Julia | Geocode | |
| 2 | AGE | Age | ka BP | Gottschalk, Julia | Geocode | |
| 3 | Opal, biogenic silica | bSiO2 | % | Gottschalk, Julia | Fourier transform infrared spectroscopy (FTIR) | wt% |
| 4 | Accumulation rate, opal | Acc rate opal | g/cm2/ka | Gottschalk, Julia | Fourier transform infrared spectroscopy (FTIR), 230Thorium normalization |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
485 data points