Logan Formation

Logan Formation
Stratigraphic range: Lower Carboniferous (early Osagean)
Logan Formation exposed in Wooster, Ohio.
TypeSedimentary
Unit ofWaverly Group
Sub-unitsBerne, Byer, Allenville, Vinton
UnderliesMaxville Limestone, Pottsville Group, and Rushville Shale
OverliesCuyahoga Formation; Black Hand Sandstone
Thickness0 to 40 m
Lithology
Primarysandstone, siltstone, conglomerate
Othershale
Location
RegionAppalachian Basin
CountryUnited States
ExtentOhio, West Virginia
Type section
Named forLogan, Ohio
Named byAndrews, 1870

The Logan Formation is the name given to a Lower Carboniferous (early Osagean) siltstone, sandstone and conglomeratic unit exposed in east-central Ohio and parts of western West Virginia, USA.