Soil and Landscape Grid National Soil Attribute Maps - Rock outcrop occurrence (3" resolution) - Release 1 

The map gives a modelled estimate (probability) of the spatial distribution of rock outcroppings across Australia.

This product was produced in the development of the updated soil thickness map of Australia, details of which are published in Malone and Searle (2020; https://doi.org/10.1016/j.geoderma.2020.114579). This product is the output from Model 1 of aforementioned paper and uses the Rock Properties database provided by Geoscience Australia which gives the locations of sampled rock outcrops across Australia (http://www.ga.gov.au/scientific-topics/disciplines/geophysics/rock-properties). Filtering this dataset resulted in 14616 rock outcrop locations within areas where relief >300 m. A machine learning model was used to find relationships between observed data and associated environmental covariate data to inform the mapping of rock outcrop occurrence across Australia.

Detailed information about the Soil and Landscape Grid of Australia can be found at - SLGA

• Attribute Definition: Probability of rock outcrops;
• Units: 0-1;
• Period (temporal coverage; approximately): 1950-2021;
• Spatial resolution: 3 arc seconds (approx 90m);
• Total number of gridded maps for this attribute: 1;
• Number of pixels with coverage per layer: 2007M (49200 * 40800);
• Data license : Creative Commons Attribution 4.0 (CC BY);
• Target data standard: GlobalSoilMap specifications;
• Format: Cloud Optimised GeoTIFF;

 

We at TERN acknowledge the Traditional Owners and Custodians throughout Australia, New Zealand and all nations. We honour their profound connections to land, water, biodiversity and culture and pay our respects to their Elders past, present and emerging.
This work was jointly funded by CSIRO, Terrestrial Ecosystem Research Network (TERN) and the Australian Government through the National Collaborative Research Infrastructure Strategy (NCRIS).
We are grateful to the custodians of the soil site data in each state and territory for providing access to the soil site data, and all of the organisations listed as collaborating agencies for their significant contributions to the project and its outcomes. 

The map gives a modelled estimate (probability) of the spatial distribution of rock outcroppings across Australia.
The aim is to operate an open national capability that provides access to verified, science-quality land surface dynamics data and soils information layers, plus high-end data analytics tools that integrated with other TERN observations can meet the needs of ecosystem researchers and actionable information for policy makers and natural resource managers. 

Data not provided.