Gasport Formation

Gasport Formation
Stratigraphic range: Sheinwoodian
~433-432 Ma
TypeFormation
Unit ofLockport Group
Sub-units
UnderliesGoat Island Formation
OverliesClinton Group
Lithology
PrimaryLimestone, Dolomite
OtherChert
Location
Region New York
 Ohio
 Pennsylvania
 West Virginia
 Ontario
Country United States
 Canada
Type section
Named forGasport, New York
Named byBrett C.E.

The Gasport Formation is a geologic formation in the Appalachian Basin and Michigan Basin.[1] This is one of the reef formations separating the Appalachian Basin from the Michigan Basin and the Ohio Basin. It is a part of the Lockport Group of carbonates. It is the lowest and oldest formation within the Lockport. The Gasport is found in Michigan, New York, Ohio, and Pennsylvania. Outcrops are limited to the area around the Great Lakes. It is part of a large reef structure dating back to the Silurian period. Being part of the Lockport Group it is a feature of the Niagara Escarpment.[2]

  1. ^ Gasport, USGS, National Geologic Map Database, Geolex — Unit Summary
  2. ^ "The Niagara Escarpment". 2010-06-04. Archived from the original on 2010-06-04. Retrieved 2023-09-13.