hemlock shelter, _liesanang_weathering, _pogue_creek_state_natural_area, _fentress_county, _tennessee, _manuel_beers_1, I_AMC4215
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© Copyright Alan Cressler 2011

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After all these years of seeing these beautiful and interesting formations I finally found out what they are. The form through a process called Liesagang weathering. Here is an excerpt from a geologic report on how they are formed:

"Through a geologic process called Liesagang weathering, mineralization and precipitation has resulted in the creation of iron oxide tubes. These may exist as a single dark ring or multiple concentric rings..."

Here is a link to the whole article. It covers an area a few miles north of Pogue Creek in Kentucky. www.rrgcc.org/documents/rrg-geology.pdf

title hemlock shelter, liesanang weathering, pogue creek state natural area, fentress county, tennessee, manuel beers 1
date yyyymmdd hr:mn 2008:03:01 15:28:14
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flickr_agent alan_cressler

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