[سيف الكلمة]

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FIGURE 213 [above].-This map, compiled at a scale of 1:40 000, shows about 10 times the detail of the floor and crater shapes seen in figure 212 (see outlined area). The locations of profiles of two dark halo volcanic craters (A A' and B B') are shown on the map.-H.M.




FIGURE 214.-These sketches of the crater profiles of figure 213 contrast markedly with profiles of young impact craters.-H.M.







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FIGURE 215 [above].-A sketch geologic map of the area of figure 213 was done by Richard Hereford of the U.S. Geological Survey. It shows the distribution of the geologic units by type and age. The ancient crater walls, central peak and ridge, and varied floor deposits are displayed. H.M.

جميع المعلومات والصور منسوخة من هذه الصفحة من موقع وكالة ناسا ومن الروابط الموجودة بنفس الصفحة

http://antwrp.gsfc.nasa.gov/apod/ap021029.html

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