Publisher's Synopsis
Excerpt from The Reforestation of Sand Plains in Vermont: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy, (Department or Botany)
The region of this study is known as the burlington-colchester Essex sand plains, which are situated at the mouth of the Winooski River, that ?ows into Lake Champlain from the Vermont side. The history of the plains is intimately connected with that of Lake Champlain. Previous to the Glacial period the present valley of the lake was occupied by a river1 ?owing northward. With the melting of the ice sheet a large lake was formed in the former river valley. After the Glacial period the sea invaded the region from the north, constituting what the older geologists called the Champlain epoch. At this time extensive beds of clay were laid down. The marine nature of these clays is demonstrated by the frequent occurrence of salt-water shells and by a skeleton of a whale found imbedded in them in the township of Charlotte. The Champlain epoch closed with an elevation of land which raised the marine deposits to their present location, the highest elevation being about room above the present lake. With the withdrawal of the sea the valley was again occupied by a body of fresh water, the present Lake Champlain.
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