Name/Title
S07.04.007Description
Castlegate Arch is a natural arch carved from Peebles Dolomite of the Silurian Geologic Period in Adams County, Ohio. The Natural Arch and Bridge Society defines a natural arch as “a rock exposure that has a hole completely through it formed by the natural, selective removal of rock, leaving a relatively intact frame.” The image was taken by Timothy A. Snyder in 1992. The location is approximate.
Information taken from Ohio’s Natural Arches by Timothy A. Snyder (Ohio Geological Survey, Education Leaflet No. 18, Revised Edition, 2014) and Rainbows of Rock, Tables of Stone: The Natural Arches and Pillars of Ohio by Timothy A. Snyder (McDonald & Woodward: Granville, Ohio, 2009) and Natural Bridges in Ohio by Michael C. Hansen (Ohio Geological Survey, Ohio Geology Newsletter, Summer 1988).
This slide image included in the USGS National Digital Catalog for NGGDPP Grant G15AP00115 in FY2015.Context
Sideways picture of rock-arch; front-facing view. Castlegate Arch in Adams County, Ohio.