Geochemical Atlas of Aotearoa New Zealand
The dataset supports the Geochemical Atlas of Aotearoa New Zealand (Martin et al. 2023) that highlights the variation in trace element concentrations in near-surface soil materials across Te Ika-a-Māui North Island, Te Waipounamu South Island and Rakiura Stewart Island. Samples were sourced from previous studies, collated from 833 sites from the top 30 cm (maximum) of soil by hand auger from across Aotearoa New Zealand. All samples were dried and sieved to <2 mm, and 15 g aliquots were analysed for a suite of 65 elements (Ag, Al, As, Au, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Hg, Ho, In, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Nd, Ni, P, Pb, Pd, Pr, Pt, Rb, Re, S, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Te, Th, Ti, Tl, Tm, U, V, W, Y, Yb, Zn and Zr) using inductively coupled plasma mass spectrometry (ICP-MS) on aqua regia digests.
The dataset contains Inverse Distance Weighted (IDW) GIS grids of the 65 elements and a polygon GIS feature layer based on the 1:250 000 Geological Map of New Zealand (2020) with mean concentrations of 65 elements for ~230 rock groups across the country. The sample locations have been collapsed to StatisticsNZ meshblock polygons in a point GIS feature layer and a spreadsheet table to protect privacy. These grids and feature layers enable an understanding of the geochemical composition and spatial variation of Aotearoa New Zealand's soils attributable to natural (geogenic) and human (anthropogenic) influences.
The supporting publication is: Martin AP, Turnbull RE, Roudier P, Cavanagh J, Rattenbury MS, Rogers KM, Vandergoes MJ, Reyes L, Gard HJL, Richardson SJ, et al. 2023. Geochemical atlas of Aotearoa New Zealand. Lower Hutt (NZ): GNS Science. 247 p. (GNS Science report; 2023/23).
Simple
- Date (Publication)
- 2023-09-30
- Citation identifier
- https://data.gns.cri.nz/metadata/srv/eng/catalog.search#/metadata/aa63b5e1-0ea1-4f8d-b717-9b4798861267
- Purpose
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Measured chemical element data to enable understanding of the present geochemical variation in Aotearoa New Zealand's soils.
- Status
- Completed
- Point of contact
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Organisation name Individual name Electronic mail address Role GNS Science
Point of contact
- Maintenance and update frequency
- Not planned
- Keywords
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soil chemistry
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geochemistry
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biochemical surface
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trace elements
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geochemical baseline
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national survey
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continental survey
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Zealandia
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ICPMS
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- Classification
- Unclassified
- Use constraints
- License
- Use limitation
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Creative Commons International 4.0 Attribution
- Use constraints
- Copyright
- Spatial representation type
- Grid
- Denominator
- 5000000
- Distance
- 1 1 m
- Language
- English
- Topic category
-
- Geoscientific information
- Distribution format
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Name Version
- OnLine resource
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Protocol Linkage Name WWW:LINK-1.0-http--link
WWW:LINK-1.0-http--link
https://shop.gns.cri.nz/account.php?action=download_item&data=NTM1MjMsNTIwMSwzMjYwNSwzZTBmNmQ0NTQ4MjVlZmZhNDYyZGE3ODMyOTFjYzc0MCwzOTM1LDExNTMzNzM3MzYzOTUzOTc3NTI2MDM5ODE3OTE0MzI2Mjc= Summary csv
WWW:LINK-1.0-http--link
https://shop.gns.cri.nz/account.php?action=download_item&data=NTM1MjMsNTIwMSwzMjYwNSwzZTBmNmQ0NTQ4MjVlZmZhNDYyZGE3ODMyOTFjYzc0MCwzOTM2LDA1NTQzNjE2OTg2NjQyMjQxMDU2OTY2NjEwNjk1ODQ0OA== Zipped GIS files
- Hierarchy level
- Dataset
- Statement
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Samples were sourced from previous studies, collated from 833 sites from the top 30 cm (maximum) of soil by hand auger from across Aotearoa New Zealand. All samples were dried and sieved to <2 mm, and 15 g aliquots were analysed for a suite of 65 elements (Ag, Al, As, Au, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Hg, Ho, In, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Nd, Ni, P, Pb, Pd, Pr, Pt, Rb, Re, S, Sb, Sc, Se, Sm, Sn, Sr, Ta, Tb, Te, Th, Ti, Tl, Tm, U, V, W, Y, Yb, Zn and Zr) using inductively coupled plasma mass spectrometry (ICP-MS) on aqua regia digests. Extensive QA/QC was undertaken based on laboratory and project standards, including duplicates, replicates and blanks.
The data have been tabulated in a spreadsheet with sample locations collapsed to StatisticsNZ 2024 meshblocks to protect privacy. These data are made available in a point GIS feature feature with locations based on meshblock centroids. Inverse Distance Weighted (IDW) GIS grids were generated for the 65 elements using ArcGIS software. A polygon GIS feature layer interpolation was also generated based on the 1:250 000 Geological Map of New Zealand (2020) applying mean concentrations of 65 elements for ~230 rock groups across the country. Details available from Martin et al. (2023) Geochemical atlas of Aotearoa New Zealand. https://doi.org/10.21420/p9bk-7016
Metadata
- File identifier
- aa63b5e1-0ea1-4f8d-b717-9b4798861267 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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Dataset
- Date stamp
- 2024-06-05T10:09:14
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role GNS Science
Point of contact