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File:Honeycomb weathering (Black Hand Sandstone, Lower Mississippian; Mt. Pleasant, Lancaster, Ohio, USA) 1 (27783170805).jpg

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Honeycomb-weathered quartzose sandstone in the Mississippian of Ohio, USA.

The pitting shown above is a distinctive weathering style called honeycomb weathering. It is most commonly seen on steep sandstone faces. It forms by differential erosion. Slight variations in the degree of cementation causes some areas of the rock to have grains removed more quickly by erosion than other areas.

The rock itself is quartzose sandstone of the Black Hand Sandstone, which represents an ancient incised valley fill deposit formed during the Early Mississippian. The dominant grain size is sand, but granules and small pebbles are also present in the unit.

Stratigraphy: Black Hand Sandstone, Lower Mississippian

Locality: trailside outcrop a little below the summit of Mt. Pleasant, Rising Park, Lancaster, central Fairfield County, southeast-central Ohio, USA
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Source Honeycomb weathering (Black Hand Sandstone, Lower Mississippian; Mt. Pleasant, Lancaster, Ohio, USA) 1
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/27783170805 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

7 December 2019

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Date/TimeThumbnailDimensionsUserComment
current17:57, 7 December 2019Thumbnail for version as of 17:57, 7 December 20194,000 × 3,000 (4.67 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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