Death Valley National Park

Moving air can only transport sand and dust, and does not erode solid rock very effectively. Its characteristic landforms, sand dunes, occur in many sizes and shapes. Most have a gentle slope on the windward side, where sand is being eroded away, and a steeper leeward side, where sand is deposited. Movement of sand from one side to the other may result in the migration of the sand dnne in the direction the wind is blowing. As with water, transport capability varies with velocity, so sand dunes often develop where the wind slows down. This is the case at Great Sand Dunes National Monument, Colorado, and Death Valley National Park, California, where spectacular, but localized, dune fields occur. 

Ordinary sand is nearly pure silicon dioxide. Sand dunes in Death Valley National Park in California are shotvn here. lAAAGE COPYRIGHT 2009, INC. USED UNDER LICENSE FROM SHUTTERSTOCK.COM,... 

Romer RL, Heinrich W (1998) Transport of Pb and Sr in leaky aquifers of the Bufa del Diente contact metamorphic aureole, northeast Mexico. Contrib Mineral Petrol 131 155-170 Roselle GT (1997) Integrated petrologic, stable isotopic, and statistical study of fluid-flow in carbonates of the Ubehebe Peak contact aureole, Death Valley National Park, California. PhD Dissertation, University Wisconsin-Madison, 279 p... 

Roselle GT, Baumgartner LP, Valley JW (1999) Stable isotope evidence of heterogeneous fluid infiltration at the Ubehebe Peak contact aureole, Death Valley National Park, California. Am J Sci 299 93-138 Rumble D III (1982) Stable isotope fractionation during metamorphic volatilization reactions. Rev Mineral 10 327-353... 

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