File:Jack Hills, Western Australia (Landsat 5 TM, 2009-07-14, detail).jpg

From Wikiversity
Jump to navigation Jump to search

Original file ‎(1,772 × 1,253 pixels, file size: 2.82 MB, MIME type: image/jpeg)

This is a file from the Wikimedia Commons. The description on its description page there is shown below.

Commons is a freely licensed media file repository. You can help.

Summary

Description
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;
  • final editing was done with Adobe Photoshop
Author Gretarsson
 
This JPG graphic was created with QGIS.
 
This image was created with Adobe Photoshop.

Licensing

The current version is published under the following license:

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.


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.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

inception

14 July 2009

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current19:42, 28 August 2019Thumbnail for version as of 19:42, 28 August 20191,772 × 1,253 (2.82 MB)Gretarssonoriginally uploaded version is factually wrong, for details see talk page
00:05, 30 December 2017Thumbnail for version as of 00:05, 30 December 2017348 × 261 (63 KB)Ras67cropped
13:14, 22 June 2008Thumbnail for version as of 13:14, 22 June 2008350 × 263 (40 KB)Dhaluza{{Information |Description={{en|1=Low and smoothed by erosion, the Jack Hills aren’t too impressive as a mountain range. But mineral crystals have weathered out of the Jack Hills and washed into streams, and these crystals tell a fascinating story about

Global file usage

The following other wikis use this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikiversity.org/wiki/File:Jack_Hills,_Western_Australia_(Landsat_5_TM,_2009-07-14,_detail).jpg"