Monday, February 11, 2013

Sandstone weathering, exfoliation

›
A sandstone promontory weathering by spalling slabs of case-hardened surface layers. This extreme southern Ohio outcrop exposes fluvial sa...
Sunday, April 18, 2010

Weathered stylolites in Silurian limestone

›
We discover a weathered stylolite zone along outcrop bluffs of sub-Lockport Silurian limestone. Stylolites in three dimensions, upper, lower...
Sunday, March 21, 2010

Roche moutonnee plucked, rafted to Ohio

›
We discover another interesting landscape boulder near roadside, Calumet Road, Miami County, Ohio. Location: N 39 59' 11" W084 19...
4 comments:
Monday, March 2, 2009

A piece of the Ice Age puzzle, glacial striations...

›
We find a rare faceted and striated boulder... Location: 40.24N 83.07W (construction site currently off-limits) See it at the new Nature Lo...
1 comment:
Monday, October 20, 2008

A groundhog's view of a muddy farm field...

›
Geology in a basement excavation in the Central Ohio Clayey Till Plain, Delaware County, Ohio. Location: 40.24N 83.07W (excavation now b...
Saturday, October 18, 2008

Fossil cannonballs...

›
See large Ohio Shale carbonate concretions displayed along the roadside at a Galena area family stone company. Location: 40.2630N 82.93...
7 comments:
Wednesday, September 24, 2008

Dirt on Ohio Shale...

›
Location: 40.2676N 82.9517W See lake shore shale cliffs and an erosion exposed preglacial ravine filled with glacial sediments. Glacial ...