LOUGHROS GROUP AND FALCARRAGH PELITES (UNDIFFERENTIATED)
LOUGHROS GROUP AND FALCARRAGH PELITES (UNDIFFERENTIATED) - QUARTZITE, SEMIPELITE AND PELITE

FALCARRAGH LIMESTONE - METALIMESTONE AND DOLOSTONE

SLIEVE TOOEY QUARTZITE
SLIEVE TOOEY QUARTZITE FORMATION - QUARTZITE

QUEENSBERRY GRITS STRANGFORD GROUP GALA GROUP

UNNAMED DYKE, LATE CALEDONIAN - LAMPROPHYRES

HIBERNIAN GREENSANDS FORMATION AND ULSTER WHITE LIMESTONE FORMATION (UNDIFFERENTIATED)
HIBERNIAN GREENSANDS FORMATION AND ULSTER WHITE LIMESTONE FORMATION (UNDIFFERENTIATED) - CHALK AND S

HAWICK ROCKS

ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED
WATERLOO MUDSTONE FORMATION - ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED

CREESLOUGH FORMATION AND ARDS BLACK SCHIST (UNDIFFERENTIATED)
CREESLOUGH FORMATION AND ARDS BLACK SCHIST (UNDIFFERENTIATED) - PELITE AND [SUBORDINATE] METALIMESTO

SESSIAGH-CLONMASS FORMATION AND LOWER FALCARRAGH PELITE FORMATION (UNDIFFERENTIATED)
SESSIAGH-CLONMASS FORMATION AND LOWER FALCARRAGH PELITE FORMATION (UNDIFFERENTIATED) - CALCAREOUS PE

LOWER KEUPER SERIES KEUPER MARL KEUPER MARL AND SANDSTONE LOWER KEUPER MARL MIDDLE KEUPER MARL KEUPER SERIES
MERCIA MUDSTONE GROUP - ARGILLACEOUS ROCK

LOWER RHAETIC RHAETIC

ARGILLACEOUS ROCKS WITH SUBORDINATE SANDSTONE AND EVAPORITIC ROCKS
BELFAST GROUP - ARGILLACEOUS ROCKS WITH SUBORDINATE SANDSTONE AND EVAPORITIC ROCKS

UPPER CRANA QUARTZITE
UPPER CRANA QUARTZITE FORMATION - QUARTZITE

CARBONIFEROUS LIMESTONE SERIES
LIMESTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED
CARBONIFEROUS LIMESTONE SUPERGROUP - LIMESTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERB

CALP SHALE OF THE CALP OR MIDDLE LIMESTONE

CARBONIFEROUS LIMESTONE SERIES
CARBONIFEROUS LIMESTONE SUPERGROUP - TUFF AND LAVA

DEVONIAN FINTONA GROUP
SLIEVEBANE GROUP - SANDSTONE AND CONGLOMERATE, INTERBEDDED

MOFFAT SERIES

UNNAMED IGNEOUS INTRUSION, PRE-CALEDONIAN - METABASALTIC-ROCK

KEUPER SERIES, LOWER BUNTER SANDSTONE KEUPER SERIES KEUPER MARL AND SANDSTONE

PETTIGO LIMESTONE GROUP LOWER LIMESTONE

LONDONDERRY FORMATION - PSAMMITE AND PELITE

UPPER LIMESTONE

RAVEAGH SANDSTONE FORMATION - SANDSTONE, SILTSTONE AND MUDSTONE

CALP SANDSTONE OF THE CALP OR MIDDLE LIMESTONE CLONELLY SANDSTONE GROUP
SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED
MULLAGHMORE SANDSTONE FORMATION - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDD

UNNAMED IGNEOUS INTRUSION, PALAEOGENE - MICROGABBRO

NEWRY GRANODIORITE COMPLEX PHASE 2 - GRANODIORITE

SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS
BARONY GLEN FORMATION - SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS

UNNAMED IGNEOUS INTRUSION, PALAEOGENE - RHYOLITE

LOWER CALP SHALE OF THE CALP OR MIDDLE LIMESTONE
BUNDORAN SHALE FORMATION - MUDSTONE AND LIMESTONE, INTERBEDDED

DRUMMAN MORE SANDSTONE FORMATION - SANDSTONE

GORTFINBAR CONGLOMERATE FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

KNOCKMORE LIMESTONE MEMBER - LIMESTONE, MUDMOUND

GOWLAUN SHALE FORMATION, LACKAGH SANDSTONE FORMATION AND BENCROY SHALE FORMATION (UNDIFFERENTIATED)

OWENCAM FORMATION - METALAVA AND METATUFF

MURLOUGH BAY FORMATION - PSAMMITE AND SEMIPELITE

CALP LIMESTONE OF THE CALP OR MIDDLE LIMESTONE
GLENCAR LIMESTONE FORMATION - LIMESTONE AND MUDSTONE, INTERBEDDED

GREENAN FORMATION

LOWER CRANA QUARTZITE
LOWER CRANA QUARTZITE FORMATION - QUARTZITE

MULLYFA FORMATION - PSAMMITE AND SEMIPELITE

GLENADE SANDSTONE FORMATION AND BELLAVALLEY FORMATION (UNDIFFERENTIATED)
SANDSTONE WITH SUBORDINATE ARGILLACEOUS ROCKS AND LIMESTONE
GLENADE SANDSTONE FORMATION AND BELLAVALLEY FORMATION (UNDIFFERENTIATED) - SANDSTONE WITH SUBORDINAT

ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED
MEENYMORE FORMATION - ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED

GILNAHIRK FORMATION

ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED
CLOGHER VALLEY FORMATION - ARGILLACEOUS ROCK AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED

UNNAMED IGNEOUS INTRUSION, LATE CALEDONIAN - FELSITE

SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS
HOLYWOOD GROUP - SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS

PORT ASKAIG TILLITE
PORT ASKAIG TILLITE FORMATION - METADIAMICTITE

SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED
BASAL CLASTICS MEMBER - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

TYRONE BASIC PLUTONIC COMPLEX (OBSOLETE NAME AND CODE: USE TPG) TYRONE IGNEOUS SERIES (PLUTONIC ROCKS)

BELFAST GROUP - DOLOMITIC LIMESTONE AND ARGILLACEOUS ROCKS

PETTIGO LIMESTONE GROUP LOWER LIMESTONE
BALLYSHANNON LIMESTONE FORMATION - LIMESTONE, MUDMOUND

UNNAMED IGNEOUS INTRUSION, EARLY CALEDONIAN - QUARTZ-FELDSPAR-PORPHYRY

UMMOON FORMATION - PELITE AND SEMIPELITE

LIMESTONE, ARGILLACEOUS ROCKS AND SUBORDINATE SANDSTONE, INTERBEDDED
ARMAGH GROUP - LIMESTONE, ARGILLACEOUS ROCKS AND SUBORDINATE SANDSTONE, INTERBEDDED

UNNAMED IGNEOUS INTRUSION, PRE-CALEDONIAN - SERPENTINITE

ROSSES CENTRED COMPLEX PHASE 1 - GRANITE

FEARNAGHT FORMATION - SANDSTONE AND CONGLOMERATE, INTERBEDDED

RUNABAY HEAD FORMATION
RUNABAY FORMATION - METALAVA AND METATUFF

LOUGH NEAGH CLAYS GROUP - CLAY AND LIGNITE

SLIEVE GULLION COMPLEX - GRANITE, GRANOPHYRIC

TEDD FORMATION - SANDSTONE, SILTSTONE AND MUDSTONE

ANNACLARE GROUP - SANDSTONE, SILTSTONE AND MUDSTONE

TYRONE IGNEOUS SERIES

SANDSTONE WITH SUBORDINATE ARGILLACEOUS ROCKS AND LIMESTONE
ULSTER CANAL FORMATION - SANDSTONE WITH SUBORDINATE ARGILLACEOUS ROCKS AND LIMESTONE

OWENCAM FORMATION - PSAMMITE AND SEMIPELITE

BASAL CLASTICS CALCIFEROUS SANDSTONE LOWER CARBONIFEROUS SANDSTONE
BALLYNESS FORMATION - SANDSTONE AND CONGLOMERATE, INTERBEDDED

LOWER CARBONIFEROUS SANDSTONE AND SHALE
OMAGH SANDSTONE GROUP - SANDSTONE, SILTSTONE AND MUDSTONE

UPPER CALCIFEROUS SANDSTONES
ALTAGOAN FORMATION - SANDSTONE AND MUDSTONE

CROAGHGARROW FORMATION - PSAMMITE AND PELITE

DUNGIVEN FORMATION (OBSOLETE CODE: USE DUNN) DUNGIVEN LIMESTONE
DUNGIVEN FORMATION - PSAMMITE AND SEMIPELITE

CLARAGH SANDSTONE GROUP

DUNGIVEN FORMATION (OBSOLETE CODE: USE DUNN) DUNGIVEN LIMESTONE

CARLINGFORD LIMESTONE GROUP - SANDSTONE, CALCAREOUS

SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED
BRISCLOONAGH SANDSTONE FORMATION - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBED

ENLER GROUP - SANDSTONE AND CONGLOMERATE, INTERBEDDED

TERMON PELITES TERMON OR MILFORD PELITES
TERMON FORMATION - PELITE AND [SUBORDINATE] PSAMMITE

MULLAGHCARN FORMATION (OBSOLETE CODE: USE MCA) MULLAGHCARN GROUP MULLAGHCARN SCHISTS:SEE MULLAGHCARN GROUP
MULLAGHCARN FORMATION - PSAMMITE AND SEMIPELITE

GLENDUN FORMATION - METALAVA AND METATUFF

CARRAUN SHALE FORMATION AND DERGVONE SHALE FORMATION (UNDIFFERENTIATED)
CARRAUN SHALE FORMATION AND DERGVONE SHALE FORMATION (UNDIFFERENTIATED) - MUDSTONE

RINN POINT LIMESTONE FORMATION - LIMESTONE

BELFAST GROUP - BRECCIA AND SANDSTONE, INTERBEDDED

DERRYLORAN GRITS DERRYLORAN GRIT FORMATION (OBSOLETE NAME AND CODE: USE DLN) UPPER CALCIFEROUS SANDSTONE DERRYLORAN GRIT MEMBER
DERRYLORAN FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

BALLYDURNIAN BRECCIA FORMATION - BRECCIA AND SANDSTONE, INTERBEDDED

KILLETER QUARTZITE FORMATION [OBSOLETE CODE: USE DBKQ]
KILLETER QUARTZITE FORMATION [OBSOLETE CODE: USE DBKQ] - QUARTZITE

MILLSTONE GRIT
MILLSTONE GRIT GROUP [SEE ALSO MIGR] - SANDSTONE, SILTSTONE AND MUDSTONE

TOURMALINE SCHISTS OF GLENELLY NORTH GLENELLY FORMATION (OBSOLETE CODE: USE GLLY)
GLENELLY FORMATION - PSAMMITE AND SEMIPELITE

UNNAMED DYKE, LATE CALEDONIAN - GRANODIORITE

ENLER GROUP - SANDSTONE AND SUBORDINATE BRECCIA

PRODUCTIVE COAL MEASURES
COAL MEASURES GROUP [OBSOLETE EXCEPT IN NORTHERN IRELAND: USE PCM, SWCM, CMSC]
COAL MEASURES GROUP [OBSOLETE EXCEPT IN NORTHERN IRELAND: USE PCM, SWCM, CMSC] - SANDSTONE AND [SUBE

CLAUDY FORMATION - PSAMMITE AND SEMIPELITE

GLENDUN FORMATION - PSAMMITE AND SEMIPELITE

UNNAMED IGNEOUS INTRUSION, LATE CALEDONIAN - MONZONITE

TYRONE CENTRAL INLIER CORVANAGHAN FORMATION TYRONE METAMORPHIC INLIER

UNNAMED IGNEOUS INTRUSION, LATE CALEDONIAN - DIORITE

TORR HEAD LIMESTONE
TORR HEAD LIMESTONE FORMATION - METALAVA AND METATUFF

OWENGARVE CALCAREOUS FORMATION - LIMESTONE, DOLOMITIC

BELFAST GROUP - SANDSTONE AND [SUBEQUAL/SUBORDINATE] LIMESTONE, INTERBEDDED

KILBRYAN LIMESTONE FORMATION - LIMESTONE AND MUDSTONE, INTERBEDDED

KEADEW FORMATION - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

ROSSES CENTRED COMPLEX PHASE 4 - GRANITE

TORR HEAD LIMESTONE
TORR HEAD LIMESTONE FORMATION - LIMESTONE

SLIEVE LEAGUE FORMATION - PELITE AND [SUBORDINATE] PSAMMITE

INISCARN SANDSTONE FORMATION LOWER CALCIFEROUS SANDSTONE
INISCARN FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

LISGORMAN SHALE FORMATION - MUDSTONE AND LIMESTONE, INTERBEDDED

LIMESTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED
ROCKDALE LIMESTONE FORMATION - LIMESTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

DESERTCREAT GROUP - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

ROSSMORE MUDSTONE FORMATION - ARGILLACEOUS ROCK

BALLYSTEEN FORMATION - LIMESTONE AND MUDSTONE, INTERBEDDED

CARRICKANESS SANDSTONE FORMATION - SANDSTONE, SILTSTONE AND MUDSTONE

CROAGHUBRID DARK SCHISTS

NEWRY GRANODIORITE COMPLEX PHASE 3 - GRANODIORITE

DART FORMATION (OBSOLETE CODE: USE DART) SCHISTOSE GRIT GROUP OF DART

CLOGHAN GREEN BEDS - METALAVA AND METATUFF

ALTMORE FORMATION - PSAMMITE AND SEMIPELITE

TOURMALINE SCHISTS OF GLENELLY NORTH GLENELLY FORMATION (OBSOLETE CODE: USE GLLY)
GLENELLY FORMATION - METALAVA AND METATUFF

DUNAGHY FORMATION - MUDSTONE AND [SUBEQUAL/SUBORDINATE] CONGLOMERATE

SANDSTONE WITH SUBORDINATE ARGILLACEOUS ROCKS AND LIMESTONE
TYRONE GROUP - SANDSTONE WITH SUBORDINATE ARGILLACEOUS ROCKS AND LIMESTONE

UPPER DALRADIAN GROUP
SOUTHERN HIGHLAND GROUP - PSAMMITE AND PELITE

CULDAFF LIMESTONE - METALIMESTONE AND PELITE

HELEN'S BAY FORMATION - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

DRUMGESH SHALE FORMATION - MUDSTONE AND LIMESTONE, INTERBEDDED

OAKPORT LIMESTONE FORMATION - LIMESTONE AND MUDSTONE, INTERBEDDED

SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS
MOY SANDSTONE FORMATION - SANDSTONE, CONGLOMERATE AND [SUBORDINATE] ARGILLACEOUS ROCKS

MAYDOWN LIMESTONE FORMATION - LIMESTONE/CEMENTSTONE/CALCILUTITE, ARGILLACEOUS, MUDDY

DARGAN LIMESTONE FORMATION - LIMESTONE/CEMENTSTONE/CALCILUTITE, ARGILLACEOUS, MUDDY

LIMESTONE, ARGILLACEOUS ROCKS AND SUBORDINATE SANDSTONE, INTERBEDDED
DESERTMARTIN LIMESTONE FORMATION - LIMESTONE, ARGILLACEOUS ROCKS AND SUBORDINATE SANDSTONE, INTERBED

CROSS SLIEVE GROUP - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

CRANFORD LIMESTONE - METALIMESTONE AND DOLOSTONE

CASTLE ESPIE LIMESTONE FORMATION
CASTLE ESPIE GROUP - LIMESTONE AND MUDSTONE, INTERBEDDED

ALDERWOOD MUDSTONE MEMBER

UNNAMED IGNEOUS INTRUSION, PALAEOGENE - GABBRO

CARRICK O'HARA FORMATION - PELITE AND [SUBORDINATE] PSAMMITE

LOUGH MOURNE GRIT FORMATION - PSAMMITE, EPIDOTIC

BALLYMASTOCKER FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

DART FORMATION (OBSOLETE CODE: USE DART) SCHISTOSE GRIT GROUP OF DART
DART FORMATION - PSAMMITE AND SEMIPELITE

NAVAN GROUP - LIMESTONE AND MUDSTONE, INTERBEDDED

GLENGAWNA FORMATION (OBSOLETE CODE: USE GAA)
GLENGAWNA FORMATION - PSAMMITE AND SEMIPELITE

SHANAGHY GREEN BEDS - METALAVA AND METATUFF

EDERGOLE SANDSTONE
EDERGOLE FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

ARDNAMONA SANDSTONE FORMATION - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

ARGILLACEOUS ROCKS AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED
LISBELLAW CONGLOMERATE FORMATION - ARGILLACEOUS ROCKS AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBED

DINGLE BEDS BALLINAMALLARD FORMATION

DINGLE BEDS GORTFINBAR CONGLOMERATE FORMATION
BALLYREAGH CONGLOMERATE FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

RED ARCH FORMATION
RED ARCH FORMATION - CONGLOMERATE AND [SUBEQUAL/SUBORDINATE] SANDSTONE, INTERBEDDED

REELAN FORMATION - CALCAREOUS PELITE, METALIMESTONE AND QUARTZITE

GREENCASTLE GREEN BEDS - METALAVA AND METATUFF

UNNAMED IGNEOUS INTRUSION, EARLY CALEDONIAN - TONALITE

RUNABAY HEAD FORMATION
RUNABAY FORMATION - PSAMMITE AND SEMIPELITE

ROSSES CENTRED COMPLEX PHASE 3 - GRANITE

BALLYKELLY FORMATION - PSAMMITE AND PELITE

FINTONA BEDS FINTONA GROUP BALLINAMALLARD MUDSTONE FORMATION
SHANMULLAGH FORMATION - SANDSTONE, SILTSTONE AND MUDSTONE

SHANMAGHRY SANDSTONE FORMATION DINGLE BEDS
TOPPED MOUNTAIN SANDSTONE FORMATION - SANDSTONE, SILTSTONE AND MUDSTONE

OWENKILLEW SANDSTONE GROUP - SANDSTONE AND [SUBEQUAL/SUBORDINATE] ARGILLACEOUS ROCKS, INTERBEDDED

INISHOWEN HEAD GRITS - PSAMMITE, EPIDOTIC

NEWRY GRANODIORITE COMPLEX PHASE 1 - GRANODIORITE