Vestfold salts database, analyses and photographsEntry ID: Vestfold_salts
Abstract: A regional chemical boundary termed the 'salt line', in the Vestfold Hills of East Antarctica, was investigated using X-ray diffraction and electron probe analyses of surficial salts, and conductivity of surficial sediments. West of the salt line, halite and thenardite are abundant. These salts are derived from dispersal of marine aerosols, saturation of sediment by seawater during postglacial ... marine transgression, and glacial dispersal of salt-saturated fjord bottom sediments. East of the salt line, subglacial calcium carbonates and salts formed by chemical weathering of their substrates may be found. The weathering products are formed from chemically and morphologically diverse minerals, which include two minerals not found previously in Antarctica, dypingite and hydromagnesite, and the first confirmed occurrence of brushite. The field descriptions, analytical data and photographs used to make these determinations are contained on the AADC server and are available through the WWW.
An Electron Probe Microanalyser (EPMA) was used to perform the analysis of samples.
It should be noted that, these EPMA analyses are qualitative, and return &counts& and as such they are dimensionless.
The column headings in this dataset are:
reliability of identification
(Click for Interactive Map)
Start Date: 1989-01-01Stop Date: 1993-03-01
ISO Topic Category
Quality 1. surficial sediments are a complete data set of the Vestfold Hills at 1 km grid spacing.
2. salts were collected where found. The sample spacing is therefore irregular and may need updating in the future. Also, some areas (e.g. rookeries) were avoided and sample collection in those areas may be fruitful.
3. XRD analysis at The University of Newcastle (Australia), Royal ... Holloway, University of London and Geology and Geophysics, University of Edinburgh.
4. EPMA and electron photomicrographs were performed at the Department of Physics, University College, UNSW, Canberra ACT.
5. Sediment extract conductivity was measured at the Department of Geography, University College, UNSW, Canberra ACT. All samples were located using the 1:50,000 topographic map or aerial photographs in the field. All samples are considered to be within 100 m of the stated position.
Access Constraints Data are stored at the AADC server and available through the WWW at the listed URL.
Data are also published in Gore et al. (2000) An atlas of the surficial salts of the Vestfold Hills ... ANARE Report 143 (available free as a 50+Mb pdf file from the Antarctic Division server).
Use Constraints This data set conforms to the PICCCBY Attribution License
Must be cited properly.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 10727 kb
Distribution Format: Excel
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 2 9850 8391
Fax: +61 2 9850 8420
Email: damian.gore at mq.edu.au
Department of Physical Geography Macquarie University
Province or State: New South Wales
Postal Code: 2109
1. Gore, D.B., Creagh, D.C., Burgess, J.S., Colhoun, E.A., Spate, A.P. and Baird, A.S. 1996. Composition, distribution and origin of surficial salts in the Vestfold Hills, East Antarctica. Antarctic Science, 8(1), 73-84.
2. Gore, D.B., Nichols, G.T., Lehmann, C.E.R., Burgess, J.S., Baird, A.S. and Creagh, D.C. 2000. An atlas of surficial salts of the Vestfold Hills, East Antarctica: composition, distribution and origin. ANARE Research Notes 143, 146 pp. (freely available as a 50+Mb pdf file from the Antarctic Division's server).
Creation and Review Dates
DIF Creation Date: 1999-10-07
Last DIF Revision Date: 2008-04-10
Future DIF Review Date: 2001-10-07