Figure 2.

The continental ice sheet advanced across Cape Cod to the islands about 23,000 years ago. Its maximum advance is marked today by gravel deposits on the continental shelf and by the outwash plains and moraines on the Islands.

The glacier advanced across Cape Cod between 18,000 and 23,000 years ago. Its maximum southward position is marked today by gravel deposits on the continental shelf. South of the ice sheet the shelf was exposed. Bulges in the ice front are called lobes.
Figure 2. The continental ice sheet advanced across Cape Cod to the islands about 23,000 years ago.
Figure 2. The continental ice sheet advanced across Cape Cod to the islands about 23,000 years ago.
Figure 2. The continental ice sheet advanced across Cape Cod to the islands about 23,000 years ago.