This is a list of the named geological faults affecting the rocks of Wales . See the main article on faults for a fuller treatment of fault types and nomenclature but in brief, the main types are normal faults, reverse faults, thrusts or thrust faults and strike-slip faults. Many faults may have acted as both normal faults at one time and as reverse or thrust faults at another and may or may not have also incorporated some degree of strike-slip movement too. Fault zones, fault belts and fault complexes typically describe assemblages of faults which have a common origin and history and whose alignments tend to be sub-parallel to one another.
There are also a number of 'disturbances' , notably in South Wales . These linear features are a combination of faults and folds - the relative importance of faulting and folding varying along the length of each disturbance.
Key to tables [ edit ] Column 1 indicates the name of the fault. Note that different authors may use different names for the same fault or a section of it. Conversely the same name may be applied to more than one fault, particularly in the case of smaller faults which are widely separated. Names are as they appear in the literature and do not necessarily conform to the commonly accepted modern spelling or form of the place-names with which they are associated. Column 2 indicates the OS grid reference of the approximate midpoint of certain faults. Note that the mapped extent of a fault may not accurately reflect its actual extent. Column 3 indicates the county in which the fault occurs. Some traverse two or more counties of course. Column 4 indicates on which sheet, if any, of the British Geological Survey 's 1:50,000 / 1" scale geological map series of England and Wales, the fault is shown and named (either on map/s or cross-section/s or both). Also listed are a handful of BGS maps at other scales, where the fault is both shown and named. Column 5 indicates a selection of publications in which references to the fault may be found. See references section for full details of publication. Alphabetical lists of faults [ edit ] Fault name OS map ref County BGS map sheet book references Aber Dinlle Fault Gwynedd Brenchley & Rawson 2006 Aber Fault Glamorganshire E&W 248 Aber Richard Fault E&W 194; 210 Aberbeeg Fault Mem E&W 232 Aberdaron Fault Gwynedd E&W 133 Abergwesyn Fault E&W 196, 212 Abertillery Fault E&W 249 Mem E&W 232 Abertridwr Fault Glamorganshire E&W 249 Acorn Fault E&W 230 Afon Banwy Fault Powys E&W 150 Afon Ganol Fault Clwyd Mem E&W 95/107 Afon Saint Fault Gwynedd E&W 133 Allt y Crib Fault E&W 163 Allt y Grug Fault E&W 230 Alyn Valley Fault E&W 108 Anafon Fault Gwynedd E&W 106 Arthog - Caerdeon Fault E&W 149 Axton Fault Flintshire E&W 96
Fault name OS map ref County BGS map sheet book references Bala - Llanelidan Fault Smith et al. 2005 Bala Fault E&W 135; 136 Bala Fault Zone UK (south) 625K Beddgelert Fault Gwynedd E&W 119 Beech Hill Fault Monmouthshire Usk-Cwm:25K Belmont Fault Clwyd Mem E&W 95/107 Benton Fault Pembrokeshire E&W 228 Brenchley & Rawson 2006 Berach Fault E&W 230 Berw Fault Anglesey Brenchley & Rawson 2006 Berw Fault Complex Anglesey Brenchley & Rawson 2006 Bethel Fault Glamorganshire E&W 247 Bettws Fault E&W 230 Bettws Newydd Fault Mem E&W 232 Blaenavon Fault Monmouthshire E&W 232 Blaenhirwaun Thrust E&W 230 Blaen Onneu Fault E&W 232 Bodafon Thrust Anglesey Brenchley & Rawson 2006 Bodelwyddan Fault Denbighshire E&W 95; 107 Mem E&W 95/107 Box Fault Glamorganshire E&W 247 Bristol Channel Fault Zone Bristol Channel Bronnant Fault Ceredigion E&W 178; 210; 211 Bronnant Fault Zone Ceredigion E&W 194; 195 Brothers Fault Glamorganshire E&W 247 Brwynd Overthrust E&W 163 Bryn Eglwys Fault E&W 120 Brenchley & Rawson 2006 Bryn Morgan Thrust E&W 230 Bryn Posteg Fault E&W 164 Bryn Rhys Fault Clwyd Mem E&W 95/107 Brynderi Fault Monmouthshire Mem E&W 233/250 Bryneglwys Fault E&W 121 Bryngwili Fault E&W 230 Bryngwyn Fault Glamorganshire E&W 230; 247 Bryn-y-maen Fault Denbighshire E&W 95 Bwlchgwyn Fault E&W 108 Bylchau Fault Denbighshire E&W 107 Mem E&W 95/107
Fault name OS map ref County BGS map sheet book references Cae Parc Fault Glamorganshire E&W 247 Caerdeon Bodlyn Fault Merionethshire E&W 135 Caergwrle Fault E&W 108 Caerleon Fault Monmouthshire E&W 249; Usk-Cwm:25K Caerphilly Fault Glamorganshire E&W 249 Camdwr Fault E&W 163 Capel Garmon Fault Clwyd E&W 107 Mem E&W 95/107 Cardigan - Fishguard Fault Belt Pembrokeshire E&W 210 Carmel Fault (Powys) Powys E&W 179 Carmel Fault (Carmarthenshire) Carmarthenshire E&W 230 Carmel Head Thrust UK (south) 625K Brenchley & Rawson 2006 Carreg Maen Taro Fault E&W 232 Carrog Valley Fault Ceredigion E&W 178 Cascade Overthrust E&W 163 Castell Fault E&W 163 Mem E&W 165/151 Cefn Fault Clwyd Mem E&W 95/107 Cefncynfal Fault Powys Mem E&W 165/1051 Cefn Bryn Thrust Glamorganshire E&W 246 Cefn Crib Fault Glamorganshire E&W 249 Cefn Fault E&W 107 Cefn Garw Fault Monmouthshire Mem E&W 233/250 Cefn Ila Fault Monmouthshire Usk-Cwm:25K E&W 232 Cefnamwlch-Rhiw Fault Gwynedd E&W 134 Ceibwr Bay Fault E&W 193 Ceidio Fault Anglesey Brenchley & Rawson 2006 Ceunant Fault E&W 149 Chapel Fault E&W 231 Chepstow Fault Monmouthshire Mem E&W 233/250 Church Stretton Fault System Brenchley & Rawson 2006 Church Stretton Fault Zone E&W 213 Mem E&W 165/151 Cilfeigan Fault Monmouthshire E&W 249; Usk-Cwm:25K Claerwen Fault E&W 179 Clochaenog Fault Clwyd Mem E&W 95/107 Clwyd Fault Smith et al. 2005 Clydach Bridge Fault Monmouthshire E&W 232 Clywedog Fault E&W 164 Clytha Fault E&W 232 Coalbrook Fault E&W 230 Coed Hir Fault E&W 231 Coed Ithel Fault Monmouthshire Mem E&W 233/250 Coedycerrig Fault E&W 232 Coed-y-paen Fault Monmouthshire E&W 249; Usk-Cwm:25K Conwy Valley Fault /Conway Valley Fault Gwynedd E&W 106 Mem E&W 95/107 Copper Works Fault Glamorganshire E&W 247 Cors-bol Fault Anglesey Brenchley & Rawson 2006 Craig Twrch Fault E&W 212 Craiglaseithin Fault Gwynedd E&W 135/149 Craignant - Milton Fault Smith et al. 2005 Craignant Fault Smith et al. 2005 Craig-y-beri Fault E&W 137 Craig-y-glyn Fault E&W 137 Creigydd Fault Monmouthshire E&W 249; Usk-Cwm:25K Cribarth Fault E&W 213 Crick Fault Monmouthshire Mem E&W 233/250 Cross Ash Fault Monmouthshire Mem E&W 233/250 Crychan Fault Powys E&W 196, 213 Crychan Fault Belt E&W 213 Cwm Cayo Brook Fault Monmouthshire Mem E&W 233/250 Cwm Cynnen Fault E&W 211 Cwm Dockin Fault E&W 165 Cwm Dwfnant Fault E&W 196 Cwm Earl Fault E&W 165 Cwm Felin Fault Glamorganshire E&W 247 Cwm Llwyd Fault E&W 230 Cwm Pennant Fault Brenchley & Rawson 2006 Cwm Pit Fault Glamorganshire E&W 247 Cwm Sylwi Fault E&W 149; 163 Cwmcarvan Fault Monmouthshire Mem E&W 233/250 Cwmdockin Fault Powys Mem E&W 151/165 Cwm-dows Fault Glamorganshire E&W 249 Cwmgwineu Fault Glamorganshire E&W 247 Cwmllynfell Fault E&W 230 Cwm-Mawr Fault E&W 196 Cwmmawr Thrust E&W 230 Cwmneol Faul E&W 231 Cymmer Fault Glamorganshire E&W 248 Cynheidre Thrust E&W 230 Cynllaith Fault E&W 137
Fault name OS map ref County BGS map sheet book references Daren Ddu Fault Glamorganshire E&W 249 Daron Fault Gwynedd E&W 133 Denbigh Fault Clwyd E&W 107 Mem E&W 95/107 Dinas Fault (Powys) Powys E&W 231 Dinas Fault (Glams) Glamorganshire E&W 248 Dinorwic Fault Gwynedd E&W 106 Dip Fach Fault E&W 231 Dolforwyn Fault E&W 165 Mem E&W 151/165 Dolwar Fault Powys E&W 150 Dowlais Fault (Mons) Monmouthshire E&W 231; 232 Dowlais Fault (Glams) Glamorganshire E&W 249 Duffryn Fault Glamorganshire E&W 230, 247 Dulas Fault E&W 196 Dulas Gap Fault Denbighshire E&W 95; 107 Mem E&W 95/107 Dyffryn Maelor Fault Clwyd Mem E&W 95/107 Dyfi Valley Fault Powys E&W 150 Dyfnant Fault Powys E&W 150 Dyfngwm Fault E&W 164 Dylife Esgairgaled Fault E&W 164 Dylife Fault E&W 164 Dynant Fault E&W 230 Dysynni Fault E&W 149 Dyto Fault Clwyd Mem E&W 95/107
Fault name OS map ref County BGS map sheet book references East Llangerniew Fault Clwyd E&W 107 Mem E&W 95/107 Efailnewydd Fault Gwynedd E&W 134 Eglwysbach Fault Clwyd Mem E&W 95/107 Energlyn Fault Glamorganshire E&W 249 Erroxhill Fault Pembrokeshire E&W 228
Fault name OS map ref County BGS map sheet book references Felin Arw Fault Glamorganshire E&W 248 Ferry Fault Glamorganshire E&W 247 Flint Fault E&W 108 Forge Overthrust E&W 149; 163
Fault name OS map ref County BGS map sheet book references Gadlys Fault Glamorganshire E&W 231; 248 Gardeners Fault Glamorganshire E&W 230; 247 Garth - Llanwrtyd Fault Belt E&W 212 Garth Fault E&W 196, 213 Garth Ferry Fault Anglesey Brenchley & Rawson 2006 Garth Hill Overthrust Glamorganshire E&W 249 Gelli Fault Glamorganshire E&W 249 Gelligaer Fault Glamorganshire E&W 249 Gelli-goch Overthrust E&W 149; 163 Giant's Grave Fault Glamorganshire E&W 247 Glan Hafren Fault E&W 165 Mem E&W 151/165 Glanalders Fault E&W 179 Glandyfi Fault E&W 163 Glaslyn Valley Fault Brenchley & Rawson 2006 Glyn Ceiriog Fault E&W 121 Glyn Fault Monmouthshire E&W 249; Usk-Cwm:25K Glyn Valley Fault E&W 135 Glyn Wallis Fault E&W 230 Glyncorrwg Fault Glamorganshire E&W 231; 248 Gnoll Fault Glamorganshire E&W 247 Gop Fault Flintshire E&W 95 Mem E&W 95/107 Gors Fault Glamorganshire E&W 230, 247 Gorsedd Bran Fault Clwyd Mem E&W 95/107 Gorseinon Fault Glamorganshire E&W 247 Great Ewloe Fault E&W 108 Greenland Fault Monmouthshire E&W 232 Gresford Fault E&W 121 Grib Fault E&W 230 Groes Fault Clwyd E&W 107 Mem E&W 95/107 Grovesend Fault Glamorganshire E&W 230; 247 Guilsfield Fault Powys E&W 150, 151 Mem E&W 151/165 Gwaynynog Fault Clwyd E&W 107 Mem E&W 95/107 Gwern-ddu Fault Monmouthshire Mem E&W 233/250 Gwespyr Fault Flintshire E&W 96 Gwili Fault Glamorganshire E&W 230, 247 Gwrych Castle Fault Denbighshire E&W 95; 107 Mem E&W 95/107 Gyrnos Fault E&W 231
Fault name OS map ref County BGS map sheet book references Hafan Fault E&W 163 Hawarden Fault E&W 108 Hendre Fault E&W 230 Highgate Fault Powys E&W 164; 165 Mem E&W 151/165 Hirwaun No 1 Fault E&W 231 Hirwaun No 2 Fault E&W 231 Hirwaun No 2a Fault E&W 231 Hirwaun No 3 Fault E&W 231 Hudnalls Fault Monmouthshire Mem E&W 233/250
Fault name OS map ref County BGS map sheet book references Itton Fault Monmouthshire Mem E&W 233/250 John Grey's Fault Glamorganshire E&W 247 Keepers Lodge Fault E&W 230 Kilkenny Fault Glamorganshire E&W 231; 249 King's Wood Fault Monmouthshire Mem E&W 233/250 Kinmel Park Fault Denbighshire E&W 95 Mem E&W 95/107
Fault name OS map ref County BGS map sheet book references Leeswood Fault E&W 108 Little Mill Fault E&W 232 Llanbadoc Fault Monmouthshire E&W 232; Usk-Cwm:25K Llancayo Fault Monmouthshire E&W 233 Mem E&W 233/250 Llandrindod - Pen-y-waun Fault Belt E&W 213 Llandyfan Fault E&W 230 Llandynan Fault E&W 121 Llanegryn Fault E&W 149 Llanelidan Fault E&W 121 Llanerchyraur Fault E&W 164 Llanerfyl Fault Powys E&W 150 Llanfabon Fault Glamorganshire E&W 231; 249 Llanfrechfa Fault Monmouthshire E&W 249; Usk-Cwm:25K Llangattock Fault Mem E&W 233/250 Llanglydwen Fault E&W 210; 211 Llangollen - Llantysilio - Aqueduct Fault Smith et al. 2005 Llangollen Fault E&W 121 Llangwm Fault Monmouthshire Mem E&W 233/250 Llangynidr Fault Mem E&W 232 Llanhilleth Fault Glamorganshire E&W 249 Llannefydd Fault Clwyd E&W 107 Mem E&W 95/107 Llanrhaeadr Fault Clwyd E&W 107 Mem E&W 95/107 Llantysilio Fault E&W 121 Llanvair Discoed Fault Monmouthshire Mem E&W 233/250 Llanvair Fault Monmouthshire E&W 250 Llanvapley Fault Mem E&W 232 Llanvihangel Fault Monmouthshire Mem E&W 233/250 Llanwonno Fault Glamorganshire E&W 248 Llanwrtyd Fault E&W 196 Llanwrtyd Fault E&W 213 Llechwedd Fault E&W 164 Llethir Fault E&W 230 Llety Wilws Fault E&W 230 Llwyn Celyn Fault E&W 230 Llwyn Fault E&W 165 Llyfnant Fault E&W 163 Llysfaen Fault Denbighshire E&W 95 Mem E&W 95/107 Longoaks Fault Glamorganshire E&W 247 Lunnon Fault Glamorganshire E&W 247
Fault name OS map ref County BGS map sheet book references Maen Fault Clwyd Mem E&W 95/107 Maes-gwyn (or Maes Gwyn) Fault Clwyd E&W 107 Mem E&W 95/107 Marian Ffrith (or Marianffrith) Fault Flintshire E&W 95 Mem E&W 95/107 Mathern Fault Monmouthshire Mem E&W 233/250 Mawddach Fault E&W 149 Melai Fault Clwyd Mem E&W 95/107 Menai Strait Fault System Brenchley & Rawson 2006 Merthyr Church Fault Glamorganshire E&W 231; 249 Meusydd Fault E&W 230 Minera Fault Belt E&W 121 Minffordd Fault Brenchley & Rawson 2006 Mochras Fault Merionethshire E&W 135; 49 Brenchley & Rawson 2006 Moelfre Fault Merionethshire E&W 135 Moel-Gilau Fault Glamorganshire E&W 248 Montgomery Fault Powys Mem E&W 151/165 Morfa Fault Glamorganshire E&W 247, 248 Morlais Fault Glamorganshire E&W 247 Mount Pleasant Fault E&W 230 Mynydd Bach Fault E&W 195 Mynydd Bodrochwyn Fault Clwyd Mem E&W 95/107
Fault name OS map ref County BGS map sheet book references Nant Cerrig Fault Clwyd Mem E&W 95/107 Nant Dyar Fault Mem E&W 232 Nant Marl Fault E&W 230 Nant y Fedw Fault E&W 196 Nant-Figillt Fault E&W 108 Nantmor Fault Gwynedd E&W 119 Nantygwrdy Fault E&W 164 Nantyricket Fault E&W 164 Nedern Fault Monmouthshire Mem E&W 233/250 Nercwys - Nant-Figillt Fault Zone E&W 108 New House Thrust E&W 165 Newcastle Fault Monmouthshire Mem E&W 233/250 Newlands Thrust Glamorganshire E&W 247, 248 Newmarket Fault Clwyd Mem E&W 95/107 Newton Fault Glamorganshire E&W 247 Newmarket Fault Flintshire E&W 95 Newport Sands Fault E&W 193; 210 Nicholaston Fault Glamorganshire E&W 247
Fault name OS map ref County BGS map sheet book references Ochr-y-cefn Fault Clwyd Mem E&W 95/107 Ogof Cadno Fault E&W 193 Ogof Fault E&W 163 Olway Brook Fault Monmouthshire Mem E&W 233/250
Fault name OS map ref County BGS map sheet book references Palleg Fault E&W 230 Palmer's Lake Overthrusts Pembrokeshire E&W 244/5 Pant Fault Denbighshire E&W 95 Mem E&W 95/107 Pant-y-fotty Fault Clwyd Mem E&W 95/107 Paper Mill Fault E&W 108 Parc Postyn Fault Clwyd Mem E&W 95/107 Pared Fault Gwynedd E&W 133 Parwyd Fault Gwynedd E&W 133 Pendaren Fault Glamorganshire E&W 249 Penffordd Fault Pembrokeshire E&W 210 Pengam Fault Glamorganshire E&W 249 Pennal Fault E&W 149; 150; 163 Penrhiwfelen Fault Glamorganshire E&W 247 Penterry Fault Monmouthshire Mem E&W 233/250 Pentre Clwydau Fault E&W 231 Pentre Felin Fault Clwyd Mem E&W 95/107 Pentre Llanharan Thrust Glamorganshire E&W 248 Pentremawr Lag Fault Carmarthenshire E&W 229 Pentre Tafarn-y-fedw Fault Clwyd Mem E&W 95/107 Pentwyn Fault (Mons) Monmouthshire E&W 249 Pentwyn Fault (Glams) Glamorganshire E&W 249 Pen-y-castell Fault Glamorganshire E&W 231, 248 Penydarren Fault E&W 231 Pen-y-Fan Fault Monmouthshire E&W 232 Pen-y-llan Fault Monmouthshire E&W 249; Usk-Cwm:25K Pen-y-parc Fault Monmouthshire E&W 249; Usk-Cwm:25K Plas Isaf Fault Glamorganshire E&W 247 Pont Morlais Fault E&W 230 Pontarsais Fault E&W 212 Pont-y-ddol Fault Clwyd Mem E&W 95/107 Pontypool Road Fault Monmouthshire E&W 232 Port Eynon Thrust Glamorganshire E&W 246 Portskewett Hill Fault Mem E&W 233/250 Prestatyn Fault Clwyd E&W 95 Mem E&W 95/107 Pwllau Bach Fault E&W 231 Pwllmawr Fault Glamorganshire E&W 247 Pwll-meyric Fault Monmouthshire Mem E&W 233/250
Fault name OS map ref County BGS map sheet book references Ramsey Fault Pembrokeshire E&W 209 Rassau Fault Mem E&W 232 Reservoir Fault Monmouthshire Mem E&W 233/250 Rhadyr Fault Monmouthshire Usk-Cwm:25K Mem E&W 232 Rhaiadr Fault E&W 137 Rhiw Fault Glamorganshire E&W 249 Rhiw Gwraidd Fault E&W 179 Rhobell Fracture Brenchley & Rawson 2006 Rhos Fault Glamorganshire E&W 231; 232; 249 Rhuallt Fault Flintshire E&W 95 Mem E&W 95/107 Rhydding Fault Glamorganshire E&W 230; 247 Rhyd Sion Wynn Fault Clwyd Mem E&W 95/107 Rhyd-y-creua Fault Clwyd Mem E&W 95/107 Rhymney Fault Mem E&W 232 Ritec Fault Pembrokeshire Brenchley & Rawson 2006 Road Uchaf Fault? Brenchley & Rawson 2006 Rock Park Fault E&W 196 Rockfield Fault Monmouthshire Mem E&W 233/250
Fault name OS map ref County BGS map sheet book references Sarn-Abersoch Thrust Gwynedd E&W 134 Sawdde Fault E&W 212 Severn Valley Fault Belt E&W 151 Toghill P. 2006 Siamber Wen Fault Denbighshire E&W 95; 107 Mem E&W 95/107 Sirhowy Fault Monmouthshire E&W 232 Six Pit Fault Glamorganshire E&W 247 Soflen Fault Clwyd E&W 107 Mem E&W 95/107 Soughton Fault E&W 108 St Arvans Fault Monmouthshire Mem E&W 233/250 St Brides Fault Monmouthshire Mem E&W 233/250 Stradey Fault Carmarthenshire E&W 229 Strumble Head Fault Pembrokeshire E&W 210 Swansea Fault Glamorganshire E&W 247 Swansea Valley Fault E&W 213 Syddyn Fault Carmarthenshire E&W 229
Fault name OS map ref County BGS map sheet book references Tafalog Fault Powys E&W 150 Taipellaf Fault Clwyd Mem E&W 95/107 Talgarth Fault Monmouthshire Mem E&W 233/250 Tal-y-coed Fault Monmouthshire Mem E&W 233/250 Tal-y-llyn Fault E&W 149 Tanant Fault E&W 137 Teifi Fault E&W 212 Tintern Fault Monmouthshire Mem E&W 233/250 Tirdonkin Fault Glamorganshire E&W 247 Tonfannau Fault E&W 149 Trafle Fault Glamorganshire E&W 247 Trawsfynydd - Cwm Bowyd Fault Brenchley & Rawson 2006 Trawsfynydd Fault MW&M:250K, E&W 135 Tredegar Fault Monmouthshire E&W 231; 232 Tre-fal-du Fault Monmouthshire Mem E&W 233/250 Trelleck Common Fault Monmouthshire Mem E&W 233/250 Trelleck Fault Monmouthshire Mem E&W 233/250 Tremadog Thrust Zone Brenchley & Rawson 2006 Tre-'r-ddol Fault E&W 163 Trevethin Fault Glamorganshire, Monmouthshire E&W 232; 249 Trinant Fault Glamorganshire E&W 249 Tumble Fault E&W 230 Tweedle Fault E&W 231 Twrch Fechan Fault E&W 230 Twyn Sych Fault E&W 231 Ty Llwyd Fault E&W 230 Ty Mawr Fault Clwyd Mem E&W 95/107 Tyn-y-caeau Fault (Denb) Denbighshire E&W 95 Mem E&W 95/107 Ty'n-y-caeau Fault (Mons) Monmouthshire E&W 249; Usk-Cwm:25K
Fault name OS map ref County BGS map sheet book references Upper Artro Fault Merionethshire E&W 135 Usk Fault Monmouthshire Mem E&W 233/250 Vale of Clwyd Fault Denbighshire E&W 121; 95 Mem E&W 95/107 Van Fault E&W 164
W,X,Y,Z [ edit ] Fault name OS map ref County BGS map sheet book references Warren Fault E&W 230 Welsh Borderland Fault Smith et al. 2005 Welsh Borderland Fault System UK (south) 625K Brenchley & Rawson 2006 Wenallt Fault E&W 164 Werf Fault E&W 231 West Llangerniew Fault Clwyd E&W 107 Mem E&W 95/107 Weston Madoc Fault E&W 165 Wonastow Fault Monmouthshire Mem E&W 233/250 Wrexham Fault E&W 121 Yspytty Ifan Fault E&W 120 Ystwyth Fault E&W 179 Mem E&W 151/165
List of Disturbances [ edit ] The following named features comprise both faulting and folding;
table of named disturbances Disturbance name OS map ref County BGS map sheet book references Caerbryn Disturbance Carmarthenshire E&W 230 Carreg Cennen Disturbance Carmarthenshire E&W 230 Clun Forest Disturbance Cribarth Disturbance Powys E&W 230, 231 Llandyfaelog Disturbance Carmarthenshire E&W 231 Llannon (or Llanon) Disturbance Carmarthenshire E&W 230 Neath Disturbance E&W 231 Pontyclerc Disturbance Carmarthenshire E&W 230 Saron Disturbance Carmarthenshire E&W 230 Trimsaran Disturbance
See also [ edit ] References [ edit ] 1:625,000 scale geological map 2007, Bedrock Geology UK South , British Geological Survey, Keyworth, Notts (UK (south) 625K ) 1:250,000 scale geological map Mid Wales and the Marches , British Geological Survey, Keyworth, Notts (MW & M 250K ) various of 1:50,000 scale geological maps of England and Wales, British Geological Survey, Keyworth, Notts (E & W no. ) 1:25,000 scale sheet Usk - Cwmbran in Classic Areas of British Geology series, British Geological Survey, Keyworth, Notts (Usk-Cwm: 25K ) Barclay, W.J. 1989 Geology of the South Wales Coalfield Part II, the country around Abergavenny , 3rd edition. Mem Br. Geol. Surv. sheet 232 (England and Wales) (Mem E&W 232 ) Brenchley, PJ & Rawson, PF (eds) 2006. The Geology of England and Wales , (2nd edn) The Geological Society, London (Brenchley & Rawson 2006 ) Cave, R. & Hains, B.A, 2001 Geology of the country around Montgomery and the Ordovician rocks of the Shelve area Memoir of the British Geological Survey. Sheet 165 with part of sheet 151 (Welshpool) (England and Wales).(Mem E&W 165/151 ) Smith et al. 2005 Structure & Evolution of the south-west Pennine Basin and adjacent area. Subsurface memoir of the British Geological Survey. (Smith et al. 2005 ) Toghill, P 2006 Geology of Shropshire (2nd edn) Crowood Press, Wilts (Toghill P 2006 ) Warren et al. 1984, Geology of the country around Rhyl and Denbigh , Mem Br Geol Svy, sheets 95 and 107 (Mem E&W 95/107 ) Welch, FBA & Trotter, FM 1961 Geology of the Country around Monmouth and Chepstow , HMSO (explanation of 1" geol. sheets 233 & 250 (England and Wales) (Welch, FBA & Trotter, FM 1961 )