NERC Data Catalogue Service
Marine Isotope Stage 5e diatom assemblages in marine sediment core ANTA91-8 (-70.78 degN, 172.83 degE, Cruise ANTA91)
A new version of this dataset is now available: 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
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 (130-116 ka). 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.
This project was funded by the UK Natural Environment Research Council Grant NE/L002531/1.
Simple
- Date (Creation)
- 2021-01-06
- Date (Revision)
- 2021-01-06
- Date (Publication)
- 2021-01-06
- Date (released)
- 2021-01-06
- Edition
- 1
- Unique resource identifier
- https://doi.org/10.5285/7731791e-ca4d-43e5-95f7-6e6275e880bf
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01445
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/L002531/1
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- Please cite this item as: shortdoi:10/fqj8
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- completed Completed
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Maintenance and update frequency
- asNeeded As needed
- Maintenance note
- completed Completed
- Theme
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- Diatoms
- Interglacial
- Sediment core
- Place
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- Southern Ocean
- GEMET - INSPIRE themes, version 1.0
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- no limitations to public access
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- Open Government Licence v3.0
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- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
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- Biota
- Environment
- Geoscientific information
))
- Begin date
- 1990-12-17
- End date
- 1990-12-17
- Supplemental Information
- 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.
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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 7-20 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 foraminifera delta-O-18 stack (Lisiecki & Raymo 2005). Translation between the LR04 and EDC3 chronologies uses the conversion table in Parrenin et al. (2013).
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 0.6-2.8 ka.
- File identifier
- 7731791e-ca4d-43e5-95f7-6e6275e880bf XML
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- engEnglish
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- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2021-01-06
- Metadata standard name
- ISO 19115 Geographic Information - Metadata
- Metadata standard version
- ISO 19115:2003(E)
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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