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Metadata Files

Data Publication

Data from the Arctic biomarker IP25 and associated open water and marginal ice biomarkers brassicasterol and HBI III from the eastern Bering Sea during the Pleistocene

Detlef, Henrieka

Polar Data Centre, Natural Environment Research Council, UK

(2018)

Descriptions

This data set comprises sea ice-related biomarkers for three time intervals, corresponding to the pre-MPT (1.53-1.36 Ma), the MPT (1.22-0.8 Ma), and the post-MPT (0.5-0.34 Ma) climate cycles from International Ocean Discovery Program (IODP) Site U1343 in the eastern Bering Sea (57deg33.4'N, 176deg49.0'W, 1950 m water depth). The biomarkers are the Arctic sea ice biomarker IP25, together with HBI III and brassicasterol, indicative of open water in the ice marginal zone and general phytoplankton production, respectively.
The data was generated using samples from International Ocean Discovery Program Site U1343 (Leg 323) in the eastern Bering Sea. The highly branched isoprenoid (HBI) lipids were extracted from 3g freeze dried sediment as described in (Belt et al., 2012). Additionally sulphur removal using tetrabutylammonium sulphite reagent (TBA) (Cabedo-Sanz and Belt, 2015) was performed for all samples prior to silica column chromatographic purification of the total organic extracts. The samples were measured on the gas chromatography mass spectrometer (Agilent 7890A GC coupled to a 5975 series mass selective detector fitted with an Agilent HP-5ms column) at Plymouth University using the operating conditions specified in Belt et al. (2012). The identification of individual lipids was based on their characteristic retention time and mass spectra and quantification was achieved by integrating the peak area of selected ions (m/z 350 (IP25); 346 (HBI III); 470 (brassicasterol)) in comparison to the peak area of the internal standards added to each sample (Belt et al., 2012). Quantification of individual lipids also considers an instrumental response factor obtained from known concentrations of biomarker lipids in the standard sediments (Belt et al., 2012). The data is provided in ng g-1 dry sediment (sed).
The samples were freeze dried at -45°C and 0.2 mbar for 48 hours using a Thermo Savant Modulyo D freeze drier and an Edwards K4 Modulyo freeze drier at Plymouth and Cardiff University, respectively. After biomarker extraction the samples were measured on the gas chromatography mass spectrometer (Agilent 7890A GC coupled to a 5975 series mass selective detector fitted with an Agilent HP-5ms column) at Plymouth University. A procedural blank was added to each extraction batch to screen for contamination. The 4-year instrumental uncertainty is %lt; 10%.

Keywords


Originally assigned keywords
"EARTH SCIENCE","CRYOSPHERE","SEA ICE","ICE EXTENT"
"EARTH SCIENCE","OCEANS","MARINE SEDIMENTS","SEDIMENT CHEMISTRY"
"EARTH SCIENCE","OCEANS","OCEANS CHEMISTRY","MARINE GEOCHEMISTRY"
"EARTH SCIENCE","PALEOCLIMATE","PALEOCLIMATE RECONSTRUCTIONS"

MSL enriched keywords
minerals
oxide mineral
ice
Phanerozoic
Cenozoic
Quaternary
Pleistocene
equipment
mass spectrometer
measured property
silicon
silicon dioxide
sulphur
Ancillary equipment
detector

MSL enriched sub domains i

geochemistry

Source

https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01048

Source publisher

Polar Data Centre, Natural Environment Research Council, UK


DOI

10.5285/9caf74c4-7054-4539-81b8-d4f942afc358


Creators

Detlef, Henrieka

School of Earth and Ocean Sciences, Cardiff University, UK

ORCID:

https://orcid.org/0000-0001-5460-8909


Contributors

Detlef, Henrieka

ContactPerson

School of Earth and Ocean Sciences, Cardiff University, UK

ORCID:

https://orcid.org/0000-0001-5460-8909

Belt, Simon T.

Researcher

School of Geography, Earth and Environmental Sciences, Faculty of Science & Engineering, University of Plymouth, UK

ORCID:

https://orcid.org/0000-0002-1570-2924

Cabedo-Sanz, Patricia

Researcher

School of Geography, Earth and Environmental Sciences, Faculty of Science & Engineering, University of Plymouth, UK

ORCID:

https://orcid.org/0000-0001-6142-0891

Hall, Ian R.

Researcher

School of Earth and Ocean Sciences, Cardiff University, UK

ORCID:

https://orcid.org/0000-0002-1570-2924

Husum, Katrine

Researcher

Norwegian Polar Institute, Tromsø, Norway

ORCID:

https://orcid.org/0000-0003-1380-5900

Kender, Sev

Researcher

Camborne School of Mines, Cornwall Campus, University of Exeter, UK

ORCID:

https://orcid.org/0000-0003-4216-3214

Lear, Caroline H.

Researcher

School of Earth and Ocean Sciences, Cardiff University, UK

ORCID:

https://orcid.org/0000-0002-7533-4430

Smik, Lukas

Researcher

School of Geography, Earth and Environmental Sciences, Faculty of Science & Engineering, University of Plymouth, UK

ORCID:

https://orcid.org/0000-0003-2280-7342

Sosdian, Sindia M.

Researcher

School of Earth and Ocean Sciences, Cardiff University, UK

ORCID:

https://orcid.org/0000-0002-4599-5529

Polar Data Centre

DataManager

Polar Data Centre, British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK

Polar Data Centre

Distributor

British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK

Polar Data Centre

HostingInstitution

British Antarctic Survey, Natural Environment Research Council; Cambridge, CB3 0ET, UK


References

10.1039/c2ay05728j

10.1016/j.orggeochem.2015.01.009


Citation

Detlef, H. (2018). Data from the Arctic biomarker IP25 and associated open water and marginal ice biomarkers brassicasterol and HBI III from the eastern Bering Sea during the Pleistocene (Version 1.0) [Data set]. Polar Data Centre, Natural Environment Research Council, UK. https://doi.org/10.5285/9CAF74C4-7054-4539-81B8-D4F942AFC358


Dates

Submitted:

2018-01

Issued:

2018


Language

en


Funding References

Funder name: Natural Environment Research Council

Award title: Polar Science for Planet Earth

Funder name: Natural Environment Research Council, Swindon, UK

Award number: NE/L002434/1

Award uri: https://nercgw4plus.ac.uk/

Award title: The NERC Great Western Four+ DTP (GW4+DTP)


Rights

Open Government Licence v3.0


Datacite version

1.0


Geo location(s)

IODP Site U1343, Bering Sea


Spatial coordinates