Geophysical logging techniques have been used in Delaware for many years as a means of identification and correlation of Coastal Plain formations. Criteria for the recognition of those formations having distinctive types of logs are presented. Formation factors have been calculated using multiple-point resistivity logs, temperature logs, and ground-water quality data and range from 1.2 to 6.8 for various formations underlying the State. Formation factors in turn are used to estimate water quality in later test holes.
Please give proper credit to the Delaware Geological Survey.
Woodruff, K.D., 1976, Selected Logging Data and Examples of Geophysical Logs for the Coastal Plain of Delaware: Delaware Geological Survey Report of Investigation 25,