National Aeronautics and Space Administration NorW013788 Rocks Poster Geologists' Tools in Space Geologists' Tools in Space Image courtesy of Luca Pietranera, Telespazio, Rome, Italy Terra MODIS image gives a synoptic view of a remote part of the Sahara Desert along the southern border between Algeria and Libya. Terra MODIS image gives a synoptic view of a remote part of the Sahara Desert along the southern border between Algeria and Libya. Terra MISR color and anaglyph images feature two views of the central Sierra Nevada Mountains. Terra MISR color and anaglyph images feature two views of the central Sierra Nevada Mountains. Images courtesy of NASA/GSFC/JPL, MISR Science Team Nevada California Owens Valley Basin and Ranges Sierra Nevada Mountains Sierra Nevada Mountains Great Valley of California N Image courtesy of NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team Terra ASTER image of the Altiplane of Chile displays a very clear view of an angular unconformity. Terra ASTER image of the Altiplane of Chile displays a very clear view of an angular unconformity. Landsat 7 ETM+ color and anaglyph images show geologic structures of India's Katch region. Landsat 7 ETM+ color and anaglyph images show geologic structures of India's Katch region. Images courtesy of Landsat Science Team Image annotation after Seeber et al., 2001 65° 10° 20° Haro Hills Banni Plains Chuj Fm. (sandstone) Q al (Alluvium) Has Hills Has Hills Chuj Fm. Bhuj Dike Dike Dike Q al Anjar 65° 65° 10° 10° 20° 20° Haro Hills Haro Hills Banni Plains Banni Plains Chuj Fm. (sandstone) Chuj Fm. (sandstone) Q al (Alluvium) Q al (Alluvium) Chuj Fm. Chuj Fm. Bhuj Bhuj Q al Q al Anjar Anjar Ground truth is necessary to identify geologic elements in some images. EOSDIS data show local and regional patterns of geologic structures, rock outcrops, soils, and sediments. EOSDIS data show local and regional patterns of geologic structures, rock outcrops, soils, and sediments. Red-blue glasses required to view 3-D effects. Red-blue glasses required to view 3-D effects.