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USGS CMG InfoBank Geology School: desert varnish

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Title Comment Keywords
Desert Varnish 16:42 - 18:16 (01:34) / 3.5 MB "Richard Hazlett", desert, "desert varnish", "manganese oxide", clay, weathering, evaporation, precipitation, "acid rain", "chemical weathering", rainfall, microbe, "biological activity"
Conclusion 25:45 - 26:48 (01:03) / 1.3 MB "James Sadd", desert, humans, life, dune, playa, salt, sand, "desert varnish", environment, landform, climate, lake, grassland, forest
Geology School Keywords
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Page Last Modified: Thu Oct 31 04:24:31 PDT 2013  (chd)