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Clay mineral composition of sediments from International Ocean Discovery Program (IODP) Expedition 379 Hole U1532G, Amundsen Sea, West Antarctica (2019)
This data set presents contents of the clay minerals smectite, illite, chlorite and kaolinite analysed on the clay fraction (less than 2 micrometers) of Pleistocene-Holocene drift sediments recovered at Hole U1532G on the Amundsen Sea continental rise during IODP Exp379 with RV JOIDES Resolution in Jan-Mar 2019. The clay mineral contents are given in percentages (%) both versus expedition number, site number, hole ID, core number, drill core type (H: advanced piston corer system, X: extended core barrel system; R: rotary core barrel system), section number (sect), section half (W: work; A: archive) and depth of the top and bottom of the sample within a section or core catcher (CC) in centimetres (cm) and versus depth below seafloor (CSF-A) in metres (m). The d-values (in Angstrom) and integral breadths (IB, delta 2theta) of the clay minerals smectite and illite as well as the ratios between the areas of the 5 Angstrom and 10 Angstrom peaks of illite are also given. The clay mineral data were generated and analysed by Dr Claus-Dieter Hillenbrand (British Antarctic Survey, Cambridge, United Kingdom) and Prof Werner Ehrmann (Institute of Geophysics and Geology, University of Leipzig, Germany). Users of this dataset should cite the dataset DOI and acknowledge both the data generators (C.-D. Hillenbrand and W. Ehrmann) and the International Ocean Discovery Program (IODP).
The work was funded by NERC UK-IODP Moratorium Award NE/T010975/1.
Simple
- Date (Creation)
- 2023-01-06
- Date (Revision)
- 2023-01-06
- Date (Publication)
- 2023-01-06
- Date (released)
- 2023-01-06
- Edition
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1.0
- Unique resource identifier
- https://doi.org/10.5285/f3c8c5e2-f8c2-4938-a7e0-6fdc9bedb412
- Codespace
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doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01702
- Codespace
- Unique resource identifier
- NE/T010975/1
- Codespace
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award
- Other citation details
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Please cite this item as: Hillenbrand, C., & Ehrmann, W. (2023). Clay mineral composition of sediments from International Ocean Discovery Program (IODP) Expedition 379 Hole U1532G, Amundsen Sea, West Antarctica (2019) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/f3c8c5e2-f8c2-4938-a7e0-6fdc9bedb412
- 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 Hillenbrand, Claus-Dieter Author Leipzig University Ehrmann, Werner Author NERC EDS UK Polar Data Centre Point of contact
- Maintenance and update frequency
- As needed
- Maintenance note
- Completed
- Theme
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Amundsen Sea
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Clay minerals
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International Ocean Discovery Program (IODP)
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Pleistocene
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West Antarctic Ice sheet (WAIS)
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- Place
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Amundsen Sea Antarctica
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GEMET - INSPIRE themes, version 1.0
- Access constraints
- Other restrictions
- Use constraints
- License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- Other restrictions
- Other constraints
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Data released under Open Government Licence V3.0:
Citation:
Hillenbrand, C.-D., & Ehrmann, W. (2023). Clay mineral composition of sediments from International Ocean Discovery Program (IODP) Expedition 379 Hole U1532G, Amundsen Sea, West Antarctica (2019) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/F3C8C5E2-F8C2-4938-A7E0-6FDC9BEDB412
- Use constraints
- Other restrictions
- Other constraints
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Under embargo
- Unique resource identifier
- doi
- Codespace
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doi
- Association Type
- Larger work citation
- Unique resource identifier
- url
- Codespace
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url
- Association Type
- Cross reference
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Geoscientific information
)
- Begin date
- 2019-02-15
- End date
- 2019-02-22
- 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
-
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=f3c8c5e2-f8c2-4938-a7e0-6fdc9bedb412 Get Data
- Hierarchy level
- Dataset
- Statement
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Methodology:
The clay fraction (less than 2 micrometers) was separated from the bulk sediment in settling tubes, and 40 mg clay suspension was mixed with 1 ml of an internal standard (0.04 % MoS2 suspension). The samples were then mounted as texturally oriented aggregates by rapidly filtering the suspension through a membrane filter (0.20 micrometer pore width), the filter cakes were dried at 50 °C, fixed on aluminium tiles and exposed to ethylene glycol vapour at a temperature of 60 °C for at least 18 h immediately before the X-ray analyses. The measurements were conducted on a diffractometer system Rigaku New Miniflex with CoK alpha radiation (30 kV, 15 mA). First, the samples were X-rayed in the range 3 - 40 °2 theta, with a step size of 0.02 °2 theta and a measuring time of two seconds per step. Then, the range 27.5 - 30.6 °2 theta was X-rayed with a step size of 0.01 °2 theta and a measuring time of four seconds per step in order to better resolve the (002) peak of kaolinite and the (004) peak of chlorite. The X-ray diffractograms were evaluated using the interactive MacDiff software (Petschick 2010, Petschick 1996). The main clay mineral groups were identified by their basal reflections at 16.5 Angstrom (smectite, after glycolisation), 10 and 5 Angstrom (illite), 14.2, 7, 4.72 and 3.54 Angstrom (chlorite), and 7 and 3.58 Angstrom (kaolinite) after the diffractograms had been adjusted to the MoS2 peak at 6.15 Angstrom. For semi-quantitative evaluations of the clay mineral assemblages, empirically estimated weighting factors on the integrated peak areas of the individual clay mineral reflections were used (Biscaye 1964, 1965). The crystallinity of illite was determined by calculating the integral breadth (IB, delta °2 theta) of the 10 Angstrom peak. High IB values indicate poor crystallinities, whereas low values indicate good crystallinities. Furthermore, we inferred the illite composition from the 5/10 Angstrom peak area ratio. Values more than 0.4 correspond to Al-rich illites (muscovite). The ratio decreases with Mg and Fe substituting the octahedral Al. Magnesium and iron-rich illites (biotite) have values less than 0.15 (Esquevin 1969).
Data collection:
A diffractometer system Rigaku New Miniflex with CoKα radiation (30 kV, 15 mA) was used for the X-raying.
The diffractograms were analysed with the interactive MacDiff (v. 4.2.5) software (Petschick 2010).
Data quality:
By preparing, analysing and evaluating samples six times, a standard deviation of c. 1% was obtained for the concentrations of smectite, chlorite and kaolinite, and of c. 1.5% for illite. The standard deviation for the 5/10 Angstrom peak area ratios is c. 0.05 and that for illite IB c. 0.02 delta °2theta.
Metadata
- File identifier
- f3c8c5e2-f8c2-4938-a7e0-6fdc9bedb412 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2023-01-06
- 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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