Regional infill gravity survey in north-east Antrim, Northern Ireland

An infill regional gravity survey was carried out in August - September 1990 over an upland region in north-east Antrim, Northern Ireland. The purpose of the survey was to define the nature of a north-south striking gravity anomaly which is located on the south-east margin of the Highland Border Ridge. A total of 107 gravity stations were collected both along roads and over the hills. The revised Bouguer anomaly map shows that the gravity gradient over the anomaly is broad, with a small low developed in the north-east. A simple two-and-a-half dimensional gravity model demonstrates that the gradient is due to a low angled contact between denser Dalradian rocks to the north-west and Permo-Trias sediments to the south-east.