Time domain electromagnetic survey -- western portion of the Island of Molokai, State of Hawaii

Abstract

This report covers the results of the time domain electromagnetic (TDEM) survey performed by Blackhawk Geosciences, Inc. (BGI) for Alpha U.S.A. Inc., (Alpha) on the Island of Molokai, Hawaii. The field work was done between November 29, 1989 and December 13, 1989. The objectives of the survey were to: 1. Map the thickness of the brackish water basal lens underlying the western portion of the island. Identify areas of potential high level dike impounded ground water. 2. To accomplish these objectives a total of 42 TDEM soundings were performed. These soundings were located on Alpha's property on Molokai and on Molokai Ranch property in areas that are of interest to Alpha.