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About the Cover


Enhanced Landsat Thematic Mapper image of the area of the Cady Mountains and Bristol Mountains in the eastern Mojave Desert, California. Color variations primarily denote contrasting iron- and hydroxyl-bearing constituents of the surficial rocks and sediments. The image enhancement reveals faults and associated structural features that were overlooked in previous field mapping. See page 1000. [Processing by Jet Propulsion Laboratory, California Institute of Technology]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)