EXPLORATION OF A LIGNITE-BEARING BASIN IN NORTHERN-IRELAND USING GROUND MAGNETIC AND VLF-EM METHODS

In an exploration technique feasibility study, a detailed magnetic and VLF-EM survey was carried out on the poorly exposed, lignite-bearing Crumlin subbasin within the Lough Neagh Basin, Co. Antrim, Northern Ir eland. The faulted and onlapped margins of the basin, as well as litho logical units and structures within the basin, were delineated by simp le processing techniques applied to the data. The combination of the t wo methods overcomes the limitations of each method when it is used al one. These techniques could be successfully applied to other lignite-b earing basins sited on strongly magnetic basement worldwide.