Bog Iron Formation In The Nassawango Creek
Watershed, Maryland, USA
Author(s)
O.P. Bricker, W.L. Newell & N.S. Simon
Abstract
The ground water of the Pocomoke River basin is rich in reduced iron. This is
particularly true in the Nassawango Creek sub-basin where bog iron deposits
along the flood plain of the Nassawango Creek were stripped in the mid-1800’s
to supply an iron smelter near the town of Snow Hill, Maryland. The rate of bog
iron formation was so rapid that areas could be re-stripped in a matter of few
years. Bog iron is still forming in this area and in other parts of the Pocomoke
Basin. Ground water has been measured with ferrous iron concentrations in
excess of 20 ppm. When this water emerges at the surface or is discharged into
the river system it rapidly oxidizes to an amorphous particulate iron
oxyhydroxide which in time crystallizes to goethite. The iron in this system is
important for at least two reasons: 1) iron oxyhydroxides strongly sorb
phosphorous and many trace metals, 2) the i
Keywords
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