GLIN==> Lake Erie Geomorphology - New Online Publication

["David F. Reid" <david.reid@noaa.gov>]

A new peer-reviewed research paper on the geomorphology of Lake Ere has 
been published electronically as part of the NOAA National Geophysical 
Data Center’s Research Publication (RP) series. This publication is a 
product of the NOAA Great Lakes Bathymetry Project 
(http://www.ngdc.noaa.gov/mgg/greatlakes/greatlakes.html), a joint 
effort involving the Great Lakes Environmental Research Lab 
(http://www.glerl.noaa.gov/res/Task_rpts/1998/ppreid01-1.html), the 
National Geophysical Data Center, and the Canadian Hydrographic Service.

The complete publication, including plates, figures and tables, in pdf 
format is available at
http://www.ngdc.noaa.gov/mgg/greatlakes/erie.html
or
http://www.glerl.noaa.gov/pubs/fulltext/2005/20050001/

Note: due to extensive use of color plates and images, there are ten 
files totaling ~29 Mb associated with the entire document. Some of the 
images are best viewed at high magnification due to complexity of colors.


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Holcombe, T.L., L. A. Taylor, J. S. Warren, P. A. Vincent D. F. Reid, 
and C. E. Herdendorf. 2005. Lake-Floor Geomorphology of Lake Erie. 
Research Publication RP-3, NOAA, NESDIS/NGDC, WDC/MG&G, January, incl. 
color plates, 26 pp.

Abstract

Lake floor physiographic features of Lake Erie, many seen in detail for 
the first time, are described with the aid of new bathymetry. 
Geomorphology of these features is discussed utilizing the bathymetry, 
existing data, and previous interpretations. The nearshore zone 
surrounding the main basins of Lake Erie deepens to 5-15 m within the 
first 1-3 km of the shore, exposing bedrock, glacial drift, and 
glaciolacustrine clay. Glacial erosion interacting with bedrock of 
varying resistance to erosion has accounted, directly or indirectly, for 
certain Lake Erie escarpments and other features, such as those 
occurring within the islands area and in the eastern Basin. Long Point 
Escarpment is apparently the surface expression of a bedrock escarpment 
formed on the edges of erosion-resistant southward-dipping strata. Clear 
Creek Ridge resembles an offshore bar built from accumulations of sand 
moving along the former shore at lower lake levels, though it may have a 
morainic foundation. The Pelee-Lorain, Long Point-Erie, and Point Pelee 
Ridges, are interpreted as morainic ridges on which sands were later 
concentrated by longshore transport at lower than present lake levels. 
Conneaut Bank, Fairport Ridge, and Point Pelee Fan are interpreted as 
deltas formed at lower lake levels. Pennsylvania Ridge flanks 
Pennsylvania Channel and resembles a natural levee extending westward 
from the southern end of the Long-Point Erie Ridge. Strong westward 
currents at depth through Pennsylvania Channel have apparently kept the 
channel open.

For more information, contact:

Cathy Darnell
Publications Office
NOAA Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945 USA
cathy.darnell@noaa.gov
Phone: 734-741-2262

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