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Ground Water Chemistry

Aqueous Crystal Growth and Dissolution Kinetics of Calcium Carbonate Minerals - Pyramid Lake Photos

Michael M. Reddy

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Project Activity at the USGS Toxics Program Research Site, the Amargosa Desert Research Site (ADRS), near Beatty, Nevada

Pyramid Lake Photos


Photo 1 - Scanning Electron Microscopy (SEM) images of calcium carbonate particles formed in a Pyramid Lake (PL) surface-water sample during nucleation experiments (Magnification  bar shown on each figure).  a Control experiment--nucleation in the absence of algae; b Calcium carbonate nucleation in a sample containing algae. (photo by Michael Reddy)

Photo 1 - Scanning Electron Microscopy (SEM) images of calcium carbonate particles formed in a Pyramid Lake (PL) surface-water sample during nucleation experiments (Magnification bar shown on each figure). a Control experiment--nucleation in the absence of algae; b Calcium carbonate nucleation in a sample containing algae. (photo by Michael Reddy) (on-line pdf report)

Photo 2 - SEM images of calcium carbonate particles in a (North Basin) PL surface-water sample collected during August 2000.  a aragonite particle, b calcite particle, c calcite particle, and d calcite particle. Scale marker is at the bottom of the photo (photo by Michael Reddy).

Photo 2 - SEM images of calcium carbonate particles in a (North Basin) PL surface-water sample collected during August 2000. a aragonite particle, b calcite particle, c calcite particle, and d calcite particle. Scale marker is at the bottom of the photo (photo by Michael Reddy). (on-line pdf report)

Photo 3 - Calcium carbonate particles from PL surface-water samples collected near shore at the Natural Resource Building (August 1992) <i><b>a</b></i>, <i><b>b</b></i>, and <i><b>c</b></i>) and from a mid-lake location <i><b>d</b></i>. Scale marker is at the bottom of the photo (photo by Michael Reddy).

Photo 3 - Calcium carbonate particles from PL surface-water samples collected near shore at the Natural Resource Building (August 1992) a, b, and c) and from a mid-lake location d. Scale marker is at the bottom of the photo (photo by Michael Reddy) (on-line pdf report)

Photo 4, 1995 - View of Pyramidi Lake from the shore .  Characteristic large carbonate mounds are on the left and are well above the present lake level.  A tree close to the present lake shore gives scale (photo by Michael Reddy, 1992).

Photo 4, 1995 - View of Pyramid Lake from the shore . Characteristic large carbonate mounds are on the left and are well above the present lake level. A tree close to the present lake shore gives scale (photo by Michael Reddy, 1992). (on-line report)

Photo 5, 1995 - View of Pyramidi Lake from the shore.  Characteristic large carbonate mounds are on the left and are well above the present lake level.  A tree close to the present lake shore gives scale (photo by Michael Reddy, 1992).

Photo 5, 1995 - A cross-section of a carbonate mound along the shore of Pyramid Lake exhibiting the characteristic radial distribution of crystals found near the mound center. The key at the center of the photo is about one inch in diameter (photo by Michael Reddy, 1992). (on-line report)

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Page Last Modified: October 7, 2014