The map gives a modelled estimate (probability) of the spatial distribution of rock outcroppings across Australia.<br></br> 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.<br></br> Detailed information about the Soil and Landscape Grid of Australia can be found at - <a href="https://esoil.io/TERNLandscapes/Public/Pages/SLGA/index.html">SLGA</a><br /><br /> <ul style="list-style-type: disc;"><li>Attribute Definition: Probability of rock outcrops;</li> <li>Units: 0-1;</li> <li>Period (temporal coverage; approximately): 1950-2021;</li> <li>Spatial resolution: 3 arc seconds (approx 90m);</li> <li>Total number of gridded maps for this attribute: 1;</li> <li>Number of pixels with coverage per layer: 2007M (49200 * 40800);</li> <li>Data license : Creative Commons Attribution 4.0 (CC BY);</li> <li>Target data standard: GlobalSoilMap specifications;</li> <li>Format: Cloud Optimised GeoTIFF;</li></ul>

Soil collection and analysis of chemical and physical attributes was carried out at the Great Western Woodlands site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Alice Mulga site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Samford Peri-Urban site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Litchfield Savanna site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Calperum Mallee site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Karawatha Peri-Urban site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Whroo Dry Eucalypt site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Wombat Stringybark Eucalypt site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.

Soil collection and analysis of chemical and physical attributes was carried out at the Warra Tall Eucalypt site to provide contextual data for the Biomes of Australian Soil Environments (BASE) soil microbial diversity project.