Image: Jack Hills, Western Australia (Landsat 5 TM, 2009-07-14, detail)
Description: 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.
Title: Jack Hills, Western Australia (Landsat 5 TM, 2009-07-14, detail)
Credit: 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; final editing was done with Adobe Photoshop
Author: Gretarsson
Usage Terms: Creative Commons Attribution 4.0
License: CC BY 4.0
License Link: https://creativecommons.org/licenses/by/4.0
Attribution Required?: Yes
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