Contents

25 May 1990
Vol 248, Issue 4958

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]