Abstract

Geoscience Australia and the States and Northern Territory geoscience agencies commenced a collaborative project in 2007 aimed at delivering a layer of pre-competitive geochemical data at the national scale. The resulting dataset will provide the energy and mineral exploration industry with a picture of the background geochemical concentration levels and patterns in Australia. The sampling strategy is based on using natural weathering and transport processes to produce well-mixed, fine-grained samples representing as much as possible the average composition of large catchments (Figure 1). To this end outlet sediments, which in most cases are similar to floodplain or overbank sediments, are collected at ~1400 target sampling sites determined by terrain and hydrologic modelling. The resulting average sampling density is ~1 site/5500 km2. At each site, sampling teams (Figure 2) collect outlet sediment samples from the surface (0-10 cm) and from a deeper level (between ~60 and 80 cm) using centrally provided equipment (Figure 3) and following a detailed set of instructions. Field data, e.g. GPS coordinates, soil colour and pH, are measured (Figure 4) and recorded digitally. In the laboratory, the collected samples are dried, split and sieved before being submitted to analysis for more than 60 elements/parameters. The data, geochemical atlas and reports resulting from this project will be made available via the GA website. The project finishes in June 2011.
Google map showing geographic bounding box with values North bound -10.0 East bound 154.0 West bound 112.0 South bound -44.0
Downloads
Related Links
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays

Product Type/Sub Type

dataset - Promotional Material

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2008

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

Promotional Material
mineral exploration
geochemistry
regolith
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-10.0
East bound
154.0
West bound
112.0
South bound
-44.0

Lineage

Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

misc
pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-d16e-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2008-01-11

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
Related Links
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays