During periods of rapid glacial retreat, a thin veneer of till is deposited, producing ground moraine. Look at the surficial geological map of the Mt. Toby quadrangle. Identify those deposits that are composed of till. On your xerox copy of the Mt. Toby topographic map , outline the locations of drumlins. Describe the morphology of a drumlin.
Geologists speculate that drumlins formed by processes related to glacial ice motion.
In addition to the glacial deposits that you have already looked at, there are other surficial deposits some of which may not obviously relate to glacial ice or meltwater streams and lakes. Look at the surficial geological map of the Mt. Toby quadrangle. Look at the surficial geological map of the Mt. Toby quadrangle. On your copy of the Mt. Toby topographic map , find the locations of the deposits of the modern Connecticut River.