Aug 18, 2010

Picture of the Day – August 18, 2010

picture of the day Picture of the Day   August 18, 2010

‘LAKE’ MARKS THE SPOT

spotted lake doubletake Picture of the Day   August 18, 2010
Photograph by Chris Gozdzik


From the photographer: The photo above shows enigmatic Spotted Lake near Osoyoos, British Columbia. It could also be called “Doubletake Lake” since that’s likely what many people do when they witness this odd body of “water”. Its spots result from a high concentration of a number of different minerals, including magnesium sulfate, calcium and sodium sulfates. At least a dozen other minerals are found in the lake’s water in varying concentrations. By late summer, much of the water evaporates and only a mineral stew remains. It’s primarily crystals of magnesium sulfate that contributes to the spotty appearance. Different minerals yield different colors. Spotted Lake was once sacred to Indian tribes in the area, perhaps because the high mineral content had therapeutic qualities. Photo taken on August 8, 2009.

Photo Details: Camera Maker: Panasonic; Camera Model: DMC-FZ18; Focal Length: 9.5mm (35mm equivalent: 58mm); Aperture: f/8.0; Exposure Time: 0.0016 s (1/640);ISO equiv: 100; Exposure Bias: none; Metering Mode: Spot; Exposure: Manual; Exposure Mode: Manual; White Balance: Auto; Flash Fired: No; Color Space: sRGB


via Earth Science




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