Karst thrust island
Eric Brevik
Dickinson State University, Dickinson, ND, United States
This small island appeared overnight in a lake in southern Georgia, USA. The region is typified by karst topography, and this island appears to be a ridge of lake bottom sediments thrust upwards along a rotational hinge line created when a collapse sinkhole formed on the lake bottom. See Denizman, C., E.C. Brevik, and J. Doolittle. 2010. Ground-Penetrating Radar Investigation of a Rapidly Developed Small Island in a Lake in Southern Georgia, USA. Journal of Cave and Karst Studies 72(2): 94-99. for more information.
Categories
Reuse
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) (opens in a new window)Credit: Eric Brevik (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
1.1 MB
Aspect
4:3
Width
2272 px
Height
1704 px
Exposure
11 mm f/8 1/125 s ISO 64
Tint
Pale purplish blue
Submitted
11 February 2013
Taken
3 November 2006
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