Map showing texture of unconsolidated materials, Connecticut Valley urban area, central New England (north and south sheets)

This map shows the areal distribution of unconsolidated materials which are composed of loose rock particles deposited predominantly through the action of glacier ice and glacial meltwater. These materials vary greatly in thickness, mineral composition, and in particle-size distribution. Each map unit characterizes the mixture of particle-sizes (texture) in the unconsolidated material to a depth of at least 3 feet a meter) beneath the soil layer.

The block diagram below shows the typical three-dimensional relationship between bedrock and unconsolidated materials in the Connecticut Valley Urban Area. Bedrock is overlain in Lost places by unconsolidated material; surface exposuresof bedrock occur throughout the map area, but mainly in the upland till areas; bedrock outcrops are not shown on this map.