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Groundwater Staining in Pennsylvanian Sandstone, West Virginia

By Florence Bascom Geoscience Center 2015 (approx.)
Groundwater staining in Pennsylvanian sandstone. A rock hammer is used as size reference.
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Detailed Description

Fractures in bedrock transmit groundwater, and geologic mapping is conducted to provide the geologic framework for groundwater resource studies. This photo shows iron-oxide staining (Leisegang banding) from past groundwater flow along fractures formed prior to the rock having been blasted open during road construction. 

This photo was taken along US Hwy 48 near Bismarck, West Virginia.

Sources/Usage

Public Domain.