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Summary
DescriptionJack Hills, Western Australia (Landsat 5 TM, 2009-07-14, detail).jpg
English: Contrast-enhanced true color satellite image (Landsat 5) of the Jack Hills in Western Australia. The rocks of the Jack Hills are very old (~ 3 Billion years) and belong to the so-called Yilgarn Craton. Yet some of these rocks, the Jack Hills conglomerate (actually a metaconglomerate) contain individual grains of zircon which are even older, more than 4 Billion years old. They are used by geoscientists to reconstruct the very early history of the earth.
Date
(original acquisition date of the entire original Landsat 5 image tile; this slightly modified detail image was created on 28 August 2019)
Source
Own work
based on Landsat 5 imagery (Entity ID LT51130782009195ASA00), downloaded at USGS Earth Explorer, dataset Landsat Legacy: Global Land Survey (info);
The actual satellite image was combined with a hillshade layer, generated from SRTM-based (SRTM GL1, 30 m resolution) digital elevation model, retrieved from OpenTopography (http://opentopo.sdsc.edu/raster?opentopoID=OTSRTM.082015.4326.1), in order to make the image look more plastic.
combination of hillshade and satellite image and insertion of latitude, longitude, and scale bar, and export as .jpg were done with QGIS;
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https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue
Only the first two versions are in the public domain because they represent NASA material that was modified/processed by (a) NASA employee(s) and was published on a NASA website, cf. PD-USGov-NASA.
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