BGS Hosted Metadata
Marine Isotope Stage 5e diatom assemblages in marine sediment core ANTA91-8 (-70.78 degN, 172.83 degE, Cruise ANTA91) - VERSION 2
This dataset presents the relative diatom abundances of 56 species/groups from the 132-120 ka interval in marine sediment core ANTA91-8 (-70.78 degN, 172.83 degE). This age interval corresponds to the peak of Marine Isotope Stage 5e. Microscope slides were prepared using a method adapted from Scherer (1994) and 300+ diatom valves were counted for each depth sample to produce the relative percentage abundance of each diatom species/group.
The age model for this dataset has been updated, with new tiepoints between the sediment core magnetic susceptibility and the LR04 benthic delta-O-18 stack selected to improve the graphical alignment.
This project was funded by the UK Natural Environment Research Council Grant NE/L002531/1.
Simple
- Date (Creation)
- 2021-06-16
- Date (Revision)
- 2021-06-16
- Date (Publication)
- 2021-06-16
- Date (released)
- 2021-06-16
- Edition
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2.0
- Unique resource identifier
- https://doi.org/10.5285/bda782a6-e89a-41a6-8791-f28001bc5d11
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01512
- Codespace
- Unique resource identifier
- NE/L002531/1
- Codespace
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award
- Other citation details
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Please cite this item as: Chadwick, M., & Allen, C. (2021). Marine Isotope Stage 5e diatom assemblages in marine sediment core ANTA91-8 (-70.78 degN, 172.83 degE, Cruise ANTA91) - VERSION 2 (Version 2.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/bda782a6-e89a-41a6-8791-f28001bc5d11
- Credit
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No credit.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role British Antarctic Survey Chadwick, Matthew Author British Antarctic Survey Allen, Claire Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Diatoms
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Interglacial
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Sediment core
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- Place
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Southern Ocean
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Other constraints
- no limitations to public access
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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Please cite this data as follows:
Chadwick, M., & Allen, C. (2021). Marine Isotope Stage 5e diatom assemblages in marine sediment core ANTA91-8 (-70.78 degN, 172.83 degE, Cruise ANTA91) - VERSION 2 (Version 2.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/BDA782A6-E89A-41A6-8791-F28001BC5D11
- Use constraints
- Other restrictions
- Other constraints
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None
- Unique resource identifier
- url
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url
- Association Type
- Cross reference
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url
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- Larger work citation
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url
- Association Type
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- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Biota
- Environment
- Geoscientific information
)
- Begin date
- 1990-12-17
- End date
- 1990-12-17
- Supplemental Information
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It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
- Title
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
- Date (Publication)
- 2008-11-12
- Cited responsible party
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Organisation name Individual name Electronic mail address Role European Petroleum Survey Group
Publisher
- Unique resource identifier
- urn:ogc:def:crs:EPSG::3031
- Version
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6.18.3
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Distributor
- Distributor format
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Name Version text/csv
- Units of distribution
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bytes
- Transfer size
- 9216
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=bda782a6-e89a-41a6-8791-f28001bc5d11 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
Sediment core material was collected on Cruise ANTA91 (1990-1991) of the R/V Cariboo ( http://www.mna.it/ts-samples/anta91-8c). For the diatom assemblage data, microscope slides were produced using a method adapted from Scherer (1994). Samples of 8-22 mg were exposed to 10% Hydrochloric acid to remove any carbonate, 30% Hydrogen peroxide to break down organic material and a 4% Sodium Hexametaphosphate solution to promote disaggregation and placed in warm water bath for minimum 12 hours. The material was homogenised into a ~10cm water column and allowed to settle randomly onto coverslips over a minimum of 4 hours. The water was drained away and coverslips were mounted on microscope slides with Norland Optical Adhesive (NOA 61). Slides were investigated with a light microscope (Olympus BH-2 at x1000 magnification) and a minimum of 300 diatom valves were counted for each sample.
Age Model
Aligned to the LR04 chronology by correlating the sediment core magnetic susceptibility to the LR04 benthic foraminiferadelta-O-18 stack (Lisiecki & Raymo 2005). Translation between the LR04 and EDC3 chronologies uses the conversion table in Parrenin et al. (2013).
This data set is the updated version of the following dataset: https://doi.org/10/fqj8
Data collection:
Instrumentation used:
Gravity corer,
Diatom settling tanks and bench,
Olympus BH-2 light microscope
Data quality:
All diatom abundance values have an error of ±0.16 %. Ages for samples have a chronological uncertainty of ~2 ka.
Sediment samples have a depth resolution of 0.7-2 cm and age resolution of 0.3-0.8 ka.
Metadata
- File identifier
- bda782a6-e89a-41a6-8791-f28001bc5d11 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2021-06-16
- Metadata standard name
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ISO 19115 Geographic Information - Metadata
- Metadata standard version
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ISO 19115:2003(E)
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS UK Polar Data Centre Point of contact
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