Directory Identifier: GRAVCD-me_onshr
Directory Title: Maine Onshore Complete Bouguer Gravity Anomaly Data
Principal Investigator: Numerous
Contributing Organization: U.S. Geological Survey
                           EROS Data Center
                           User Services
                           Sioux Falls, SD 57198

Summary: The gravity station data (18,461 records) were compiled 
by the U. S. Geological Survey.  This data base was received on 
February 23, 1993. Principal gravity parameters include observed 
gravity, Complete Bouguer Gravity anomalies and Free-air 
anomalies.  The observed gravity values are believed referenced 
to the International Gravity Standardization Net 1971 (IGSN 71).  
It is also believed the gravity anomaly computation uses the 
Geodetic Reference System 1967 (GRS 67) theoretical gravity 
formula.

CAVEAT:  Caution is recommended in using these data, which have 
been furnished to NGDC with minimal documentation.