Geological survey of Northern Ireland /
Ordnance Survey of Northern Ireland.
Geological Survey of Great Britain.
Southampton [England] : Ordnance Survey,
1961-
Relief of base map shown by contours and spot heights.
Includes various issues of sheets.
"Resurveyed in 1958-60."
"Based on Third Series One-Inch Map, Northern Ireland."
Includes Index, explanation and key to geological colours, index and location diagrams, and sections.
Sheet 7. Giant's Causeway (solid ; drift, 1968) -- Sheet 8. Ballycastle (solid ; drift, 1963) -- Sheet 29. Carrickfergus (solid ; drift, 1968) -- Sheet 35. Dungannon (solid ; drift, 1961) -- Sheet 36. Belfast (solid ; drift, 1966)
Geology