Queenston shale

Queenston shale

[′kwēnz·tən ′shāl]
(geology)
A red bed series from the Ordovician found in Niagara Gorge; it is composed of deltaic red shale.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The Ordovician System includes the Stonington Formation, consisting of interbedded fossiliferous carbonate and shale; the Big Hill Dolomite consisting of argillaceous dolomite and limestone; and the Queenston Shale, consisting of alternating layers of gypsum, limestone, and gray, green, and red shale.
In a small area in northeastern Mackinac County, the Manitoulin Dolomite unconformably overlies the Stonington Formation, whereas the Manitoulin Dolomite overlies the Queenston Shale in the rest of the county.