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Metadata : Northern Territory Geological Survey - Geochemistry - All Rocks |
Index:
Metadata Details:
Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile
Version:1.0
Date Metadata Extracted:2025-03-31
Date Metadata Last Updated:2025-02-17
Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DD39CE92EBEEF5DE0632144CD9BC2EE
Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=2DD39CE92EBEEF5DE0632144CD9BC2EE
Citation
ANZLIC Identifier:2DD39CE92EBEEF5DE0632144CD9BC2EE
Title: Northern Territory Geological Survey - Geochemistry - All Rocks
Citation Date:2025-02-11
Date Type:creation
Custodian:Department of Industry, Tourism and Trade
Description
This Northern Territory Geological Survey (NTGS) Geochemistry dataset contains information on open file geochemical data from companies and/or the NTGS, collected for samples where the Sample Method may be described as a rockchip of an outcrop, or an undifferentiated rock sampled from surface. The data is captured by the NTGS via compulsory reporting from exploration companies or from sampling done by NTGS geologists. The geochemical dataset consists of major elemental oxides, trace and rare earth element abundances where available. Analyses are included in the dataset on a 'Best Assay' basis (per sample) and to common units. No repeat analyses are included in the dataset unless analysed with a different SampleID.
- geoscientificInformation
Bounding Coordinates:
- North Bounding Coordinate:-10
- South Bounding Coordinate:-26
- East Bounding Coordinate:138
- West Bounding Coordinate:129
Dataset Status
Dataset ID:
Language:English
Character Set: Latin 1
Progress:onGoing
Maintenance and Update Frequency:quartely
Data Currency Start Date:
Data Currency End Date:
Access Constraint:Only open file data available.
Copyright Northern Territory of Australia (Northern Territory Geological Survey) 2025.
With the exception of the Northern Territory of Australia logo, other government and corporate logos and where otherwise noted, all material in this publication is provided under a Creative Commons Attribution 4.0 International licence (creativecommons.org/licenses/by/4.0/legalcode).
You are free to re-use the work under the licence, on the condition that you attribute the Northern Territory of Australia (Northern Territory Geological Survey) and comply with the other licence terms.
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 from company reports is ongoing within NTGS and is based on geological terrains. More recent exploration reports and data have been supplied in digital formats and are uploaded directly into a SQL Server database after transcription to a standard loading template. NTGS collected rock samples are primarily whole rock geochemical analyses. 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. All data is transferred into a SQL Server database. Data is validated twice: at the template stage (before entry); and on loading into the database. Data is extracted, transformed and loaded into STRIKE as well as file-based outputs including MapInfo tab and ESRI shapefile formats, available from the NT-Wide Downloads page.
Positional Accuracy:Approximately 20-200m metres using 100k topographical maps or 1-10m using GPS. GDA94 decimal latitudes and longitudes are available for each site.
Attribute Accuracy:Analyses have been 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. No levelling between analytical methods has been applied to the dataset.
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) (geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/81743)
on a report basis for all rock sample types. Company reports can be searched and downloaded via GEMIS (geoscience.nt.gov.au/gemis).
Contacts
Name Organisation Position Role Phone Fax Manager Geoscience Business Systems Department of Industry, Tourism and Trade 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 Sample method Method of rock sampling BOH Bottom of the hole - drill sample BULK Bulk sample CALC Calcrete sample CHANNEL Channel sample CHIP Drill chips generic sample from non core drilling CHIP_AC Drill sample air core drilling CHIP_AUG Drill sample auger drilling CHIP_PERC Drill sample percussion drilling CHIP_RAB Drill sample rotary air blast drilling COMP Composite sample COS Costean sample CRC Composite rock chip (material comprising 10 to 15 grab samples) DRILL Drill Samples - unspecified DSPOIL Drill spoil DUMP Dump samples usually from waste dump DUP Duplicate of a sample (QAQC sample) FACE Pit face sample FLOAT Float sample (non outcrops) GRAB Grab rock samples from outcrops/subcrops GRAVEL Gravel samples of stream HS Hand specimen LAT Lateritic sample NOT RECORDED Not recorded in the reference/report ORIENT Orientation sample PET Petrological sample REASS Re-assayed sample ROCK Rock sample - Unspecified ROCKCHIP Rockchip sample SCOOP Scoop sample (on drill chips samples) STD Standard sample (QAQC sample) SURFACE Surface sample - unspecified sample TAILINGS Tailings samples of e.g. mine dump or tailing dam TRENCH Trench sample UNK Unknown sample method VACUUM Vacuum bedrock drilling sample WROCK Wholerock analysis Unit of Measure Unit of measure pct Percent ppb Parts per billion ppm Parts per million
Supplementary Information
This record maintained using the NTLIS Metadata Tool