schoharie grit

from The Collaborative International Dictionary of English v.0.48
Schoharie grit \Scho*har"ie grit`\ (Geol.)
   The formation belonging to the middle of the three
   subdivisions of the Corniferous period in the American
   Devonian system; -- so called from Schoharie, in New York,
   where it occurs. See the Chart of {Geology}.
   [1913 Webster]
    

[email protected]