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Metadata : Northern Territory Geological Survey - Geochemistry - Soil (Surface) |
Index:
Metadata Details:
Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile
Version:1.0
Date Metadata Extracted:2026-07-25
Date Metadata Last Updated:2026-06-30
Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=66C89DEFEE32F01DE050CD9B21441C46
Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=66C89DEFEE32F01DE050CD9B21441C46
Citation
ANZLIC Identifier:66C89DEFEE32F01DE050CD9B21441C46
Title: Northern Territory Geological Survey - Geochemistry - Soil (Surface)
Citation Date:2017-10-16
Date Type:revision
Custodian:Department of Mining and Energy
Description
Northern Territory Geological Survey (NTGS) geochemical datasets contain information on available open file geochemical data for samples collected from companies and NTGS. Soil samples are defined as samples taken from surface or soil profile where soil is defined as any unconsolidated material above bedrock. Sample Method may be defined as soil, lag, laterite etc. The data is captured by the NTGS via statutory reporting from exploration companies or NTGS projects.
- geoscientificInformation
Bounding Coordinates:
- North Bounding Coordinate:-11
- South Bounding Coordinate:-26
- East Bounding Coordinate:138
- West Bounding Coordinate:128
Dataset Status
Dataset ID:
Language:English
Character Set: Latin 1
Progress:onGoing
Maintenance and Update Frequency:weekly
Data Currency Start Date:1956-01-01
Data Currency End Date:2026-04-01
Access Constraint:Only open file data available.
The Northern Territory Government supports and encourages the dissemination and exchange of its information.
The copyright in this publication is licensed under a Creative Commons Attribution 4.0 (CC BY) International Licence https://creativecommons.org/licenses/by/4.0/legalcode
Under this licence you are free to use this publication in accordance with the licence terms without having to seek our permission.
You must keep intact the copyright notice and attribute the Northern Territory Government as the source of the publication.
Attribution to: Northern Territory Government (Northern Territory Geological Survey) 2026.
Data Quality
Lineage:Sample and assay data are captured from both open file company exploration reports and NTGS projects. Exploration data is extracted from legacy hardcopy reports by scanning and digitizing, including spatial data capture from maps where necessary.
Legacy data capture has been completed at various times and usually on a geological terrane basis. More recent exploration reports and data are supplied in digital formats and have been uploaded directly into a database after transcription to a standard loading template. NTGS data is primarily for rock samples undergoing whole rock geochemical analysis.
NTGS undertake QA/QC on NTGS collected samples involving assessing precision and accuracy of techniques through internationally recognised standard reference materials and NTGS in house standards, including the identification of duplicates and blanks. Data is transferred into a SQL Server database. Data is validated twice, at the template stage (before entry) and during loading into the database.
Positional Accuracy:Approximately 20-200m metres using 100k topographical maps or 1-10m using GPS.
Attribute Accuracy:Analysis is performed by laboratories to set standards. Geological observations and descriptive attributes noted by Geological Survey geologists.
Logical Consistency:Data is logically consistent for the purposes of geological interpretation.
Completeness:Data is as complete as possible for each record. Due to the flat file nature of the STRIKE layers the laboratory method information is not included for each assay and the original source of the data should be checked.
Laboratory metadata is now included with full 'raw' (as-reported) geochemical analyses in the Northern Territory Geochemistry Datasets, Digital Information Package 1 (DIP001) https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94622 on a report basis for all rock sample types. Company reports can be searched and downloaded via GEMIS https://geoscience.nt.gov.au/gemis
Datasets in .shp, .tab, and .csv formats are available for download in STRIKE https://strike.nt.gov.au/ via Downloads > NT Wide Datasets > Geochemistry.
Contacts
Name Organisation Position Role Phone Fax Manager Geoscience Business Systems Department of Mining and Energy Manager Geoscience Business Systems custodian (08) 8999 5448 (08) 8999 6824 geoscience.spatial@nt.gov.au
Data Dictionary
Attribute Attribute Description Possible Code Code Description PCT This applies for all columns named with the convention of element_PCT e.g. AG_PCT (Unit of Measure of Percentage) -9998 to 0 Percentage (PCT) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available -9999 Represents a NULL for elements that have not been analysed in a sample 0 to +999,999.99 Percentage (PCT) values can range between +999,999.99 and 0. These positive values mean that the concentration of chemical element is high enough to be detected if measured by technology available PPB This applies for all columns named with the convention of element_PPB e.g. AG_PPB (Unit of Measure Parts Per Billion)
Percent, parts per million (PPM) and parts per billion (PPB) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available-9998 to 0 Parts per billion (PPB) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available -9999 Represents a NULL for elements that have not been analysed in a sample 0 to +999,999.99 Parts per billion (PPB) values can range between +999,999.99 and 0. These positive values mean that the concentration of chemical element is high enough to be detected if measured by technology available PPM This applies for all columns named with the convention of element_PPM e.g. AG_PPM (Unit of Measure Parts Per Million)
Percent, parts per million (PPM) and parts per billion (PPB) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available-9998 to 0 Parts per million (PPM) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available -9999 Represents a NULL for elements that have not been analysed in a sample 0 to +999,999 Parts per million (PPM) values can range between 0 and +999,999.99. These positive values mean that the concentration of chemical element is high enough to be detected if measured by technology available PPT This applies for all columns named with the convention of element_PPT e.g. AG_PPT (Unit of Measure Parts Per Trillion) -9998 to 0 Parts Per Trillion (PPT) values that fall below 0 into negative values (excluding -9999) demonstrate that the concentration is below the detection limit of the technology available -9999 Represents a NULL for elements that not been analysed in a sample 0 to +999,999.99 Parts per Trillion (PPT) values can range between +999,999.99 and 0. These positive values mean that the concentration of chemical element is high enough to be detected if measured by technology available
Supplementary Information
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