Bedrock valleys of the New England coast as related to fluctuations of sea level

Abstract

Test borings for bridges crossing 14 New England rivers or bays near the coast (including Narragansett and Passamoquoddy Bays) reveal information on depths to thalwegs of buried bedrock valleys and on the nature of contained unconsolidated sediments. An attempt is made to infer from these data something of the time and rate of sea-level rise in late-or postglacial time as one phase of the general problem of encroachment of salty ground water from the sea.