Stratigraphic range: Sheinwoodian-Homerian ~433–427 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Type
Group
Unit of
Cayugan Series
Sub-units
Guelph Formation
Eramosa Formation
Goat Island Formation
Gasport Formation
Underlies
Vernon Formation
Overlies
Clinton Group
Lithology
Primary
Dolomite
Other
Limestone, Chert
Location
Region
New York, Ohio, Pennsylvania, West Virginia
Country
United States, Canada
Extent
Appalachian Basin, Michigan Basin
The Lockport Group is a geologic group in the Appalachian Basin and Michigan Basin in the northeastern United States and Canada. This unit makes up the Niagara Escarpment. Its most famous feature is Niagara Falls. The unit outcrops in New York, Ontario, Michigan, Wisconsin, and Illinois.[1]
^Kelly, Peter E. (2007). The last stand : a journey through the ancient cliff-face forest of the Niagara Escarpment. Douglas W. Larson. Toronto: Natural Heritage Books. ISBN 978-1-55488-332-5. OCLC 768163291.
The LockportGroup is a geologic group in the Appalachian Basin and Michigan Basin in the northeastern United States and Canada. This unit makes up the...
in Pennsylvania. It is overlain by the shales and carbonates of the LockportGroup in New York, the McKenzie Formation in Pennsylvania, and the Sneedville...
Ohio Basin. It is a part of the LockportGroup of carbonates. It is the lowest and oldest formation within the Lockport. The Gasport is found in Michigan...
the Appalachian Basin. It is one of the formations that make up the LockportGroup of the Silurian period. Goat Island, USGS, National Geologic Map Database...
predominantly the Lockport; in parts central to northeast Pennsylvania it overlies the Bloomsburg Formation. It also underlies the Helderberg Group. Being a thick...
correlations of the Niagaran provincial series (Medina, Clinton, and Lockportgroups) in the type area of western New York" (PDF). U.S. Geological Survey...
44.6; -81.1 The Eramosa Member is a Silurian stratigraphic unit of the Lockport Formation exposed along the Niagara Escarpment in Ontario and western New...
and Maryland. It is dated to the Carboniferous period. The top of the group is marked by the Waynesburg Coal (No. 11 Coal) and its base is marked by...
Falls Group is a geologic group in the Appalachian Basin. It dates back to the Devonian period. Also stratigraphically equivalent to the Portage Group. The...
classified as the basal unit of the Hamilton Group (Dh), lying beneath the Mahantango Formation (Dmh) member of this group in Pennsylvania and Maryland. In New...
The Knox Supergroup, also known as the Knox Group and the Knox Formation, is a widespread geologic group in the Southeastern United States. The age is...
The Trenton Group is a geologic unit in Canada and Michigan, Ohio, New York State and Indiana, Pennsylvania, and West Virginia in the United States. It...
The Permian Dunkard Group (Pd) is an area of rock, Early Permian in age, in the south of Ohio, southwestern Pennsylvania, West Virginia and the hilltops...
Shale or Geneseo Shale is the lowest member of the Harrell Shale/Genessee Group. The Burket is an organic-rich black shale that rests just above the Tully...
The Devonian Catskill Group or the Catskill Clastic wedge is a unit of mostly terrestrial sedimentary rock found in Pennsylvania and New York. Minor marine...
The Allegheny Group, often termed the Allegheny Formation, is a Pennsylvanian-age geological unit in the Appalachian Plateau. It is a major coal-bearing...
The Cincinnati Group is a geologic group in Kentucky, Ohio and Indiana. It is Upper Ordovician. Earth sciences portal United States portal Ohio portal...
the Damen 4708 design, and will be built by the Bollinger Shipyards of Lockport, Louisiana. The firm fixed-price contract for the first ship is worth €88m...
Lockport Air Force Station is a closed United States Air Force ADCOM General Surveillance Radar station in Cambria, New York. Initially established at...
The Onondaga Limestone is a group of hard limestones and dolomites of Devonian age that forms geographic features in some areas in which it outcrops;...
The Genesee Formation (Group) is a geologic formation in New York. It is equivalent the Harrell Shale in Pennsylvania. It date back to the Upper Devonian...
The Hamilton Group is a Devonian-age geological group which is located in the Appalachian region of the United States. It is present in New York, Pennsylvania...