Title: Pleistocene-Holocene sediments interpreted by seismic refraction and wash-bore sampling, Plum Island - Castle Neck, Massachusetts
Subjects: Coast changes, Borings, Seismic prospecting, Stratigraphic Geology, Sand bars
Places: Newburyport, Ipswich, Plum Island, Massachusetts, Castle Neck
Time periods: Pleistocene, Holocene