(from http://www.priweb.org/ed/finger_lakes/nystate_geo3.html)
The Finger Lakes consist of 11 long, narrow, roughly parallel lakes, oriented north-south as fingers of a pair of outstretched hands. The southern ends have high walls, cut by steep gorges. Two of the lakes (Seneca and Cayuga) are among the deepest in North America and have bottoms below sea level. These lakes all formed over the last two million years by glacial carving of old stream valleys. Ithaca is located at the south end of Cayuga Lake, the longest and the second deepest of the Finger Lakes. Cayuga is 38.1 miles long and 435 feet deep (53 feet below sea level) at its deepest spot. The actual depth of carved rock is well over twice as deep, but it has been filled with sediments; there may be as much as 1000 feet of glacial sediment in the deep rock trough below the lakebed.
The Finger Lakes originated as a series of northward-flowing rivers that existed in what is now central New York State. Around two million years ago the first of numerous continental glaciers moved southward from the Hudson Bay area, initiating the Pleistocene glaciation, commonly known as the "Ice age."
The most obvious evidence left by the glaciers are the gravel deposits at the south ends of the Finger Lakes called moraines and streamlined elongated hills of glacial sediment called drumlins. Moraines are visible south of Ithaca at North Spencer, along Route 13 west of Newfield, and near Willseyville. Drumlins are visible northeast of Ithaca at the northern end of Cayuga and Seneca lakes in a broad band from Rochester to Syracuse.
Keuka
©2013 Raymond M. Jozwiak
What do you think?
Tell me at
http://www.rayjozwiak.com/guestbook.html
My latest release, Black & White Then Back,
can be downloaded digitally at:
(or you can copy-and-paste this URL directly to
your browser: http://www.cdbaby.com/cd/rayjozwiak3)
Also, be sure to visit:
http://www.rayjozwiak.com
Tweet
