Environmental Engineering Reference
In-Depth Information
TABLE 7.12
(
Continued
)
Maumee (Lake Erie)
McConnell (northern Alberta)
Memphremagog (Vermont province of Quebec)
Mignon (Lake Superior)
Minnesota (Driftless area of Minnesota)
Missoula (Washington, Idaho, Montana)
Newberry (united Finger Lakes, outflow to Susquehanna)
Nipissing Great Lakes (postglacial higher Great Lakes,
draining through Ottawa Valley; later Port Huron)
Ojibway-Barlow (north central Ontario)
Ontario (Early)
Ontonagon (northern Michigan)
Passaic (eastern New Jersey)
Peace (Alberta)
Rycroft (to Peace River, Alberta)
Saginaw (southwest of Lake Huron)
St. Louis (valley of St. Louis River)
Saskatchewan (midcourse of Saskatchewan River)
Schoharie (middle New York State)
Souris (western Manitoba and North Dakota, draining to ? James River)
Stanley (Lake Huron, draining to Ottawa Valley)
Toleston (Lake Michigan)
Tyrrell (west of Lake Athabasca)
Vanuxem (greater Finger Lakes, outflow east to the Mohawk)
Vermont (Coveville and Fort Ann phases, to Lake Champlain)
Warren (southern Lake Huron, Erie, and Finger Lakes)
Wayne (low-level stage at Erie basin)
Whittlesey (greater Lake Erie, southern end of Lake Huron)
Wisconsin (Wisconsin)
Wollaston (discharged west to Athabasca)
Modern Great Lakes
Superior (outflow at Sault Ste. Marie rapids)
Michigan (continuous at Mackinac Straits with Lake Huron)
Huron (outflow at St. Clair River)
Erie (Niagara Falls)
Ontario (Thousand Islands, St. Lawrence)
a
After Fairbridge, R.W.,
Encyclopedia of Geomorphology
, R.W. Fairbridge, Ed., Dowden, Hutchinson & Ross Publ.,
Stroudsburg, PA, 1968, pp. 444-453.
Depositional Sequence
The probable sequence of deposition in the Connecticut River Valley, which can be con-
sidered as typical of the formation of many glacial lakes, is given in
Figure 7.90.
The pres-
ent-day landform is illustrated in the topographic map (
Figure 7.91)
.
The ice mass fills the
valley and was probably responsible for its excavation (Figure 7.90A). As recession begins,
the ice begins to melt, and outwash deposits kame terraces and fills crevasses (Figure
7.90B). The lake grows in size, and fluvial activity fills the lake margins with stratified
granular soils and the deeper waters with fine-grained soils (varved silts and clays)
(Figure 7.90C). The lake begins to drain from a lower outlet; lake margins are exposed and
kettles are formed (Figure 7.90D). In Figure 7.90E, the lake has drained and the coarser-
grained particles are exposed as terraces.
