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Map showing thickness of principal clay unit, Hartford South Quadrangle, Connecticut
William H. Langer
1974, Miscellaneous Field Studies Map 487-B
This map show the distribution and thickness of the principal clay unit.  The clay unit consists of a thick, massive bed of relatively pure clay in some areas; in other areas it consists of discrete layers of clay alternating with layers of silt and very fine sand (varved clay).  The...
Map showing unconsolidated materials, Southwick quadrangle, Massachusetts-Connecticut
Robert W. Schnabel
1974, Miscellaneous Field Studies Map 606-A
This map is intended to serve as an aid in reconnaissance evaluation of unconsolidated materials and can be used to identify areas of potential interest.The units on this map indicate the first material of substantial thickness (generally greater than 3 feet (1 m) encountered beneath the soil layer. The soil...
Faults and their potential hazards in Santa Cruz County, California
N. Timothy Hall, Andrei M. Sarna-Wojcicki, William R. Dupre
1974, Miscellaneous Field Studies Map 626
This report and map area designed to provide Santa Cruz County with basic data on the location, pattern, recency of movement, potential for future surface rupture, and anticipated earthquake magnitudes and recurrence intervals for several of the faults located there for consideration in the county's land-use planning program and the...