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pinicola | all galleries >> Karen & Gary >> Utah 2009 >> 3 Canyonlands National Park > The dark streaks and patches on desert rock are called "desert varnish"
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15-SEPT-2009

The dark streaks and patches on desert rock are called "desert varnish"

Iron and manganese makes the color, and scientists suspect that bacteria plays a role in
creating the resulting dark coating on the rock.

Panasonic Lumix DMC-FZ28
1/8s f/3.0 at 6.5mm iso100 hide exif
Full EXIF Info
Date/Time02-Oct-2009 22:09:10
MakePanasonic
ModelDMC-FZ28
Flash UsedNo
Focal Length6.5 mm
Exposure Time1/8 sec
Aperturef/3
ISO Equivalent100
Exposure Bias0.33
White Balance
Metering Modematrix (5)
JPEG Quality
Exposure Programprogram (2)
Focus Distance

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