The Cribarth Disturbance is a geological structure forming a lineament which stretches across south Wales from Swansea up the Swansea Valley then northeastwards to Brecon and beyond. It consists of both a series of faults and associated folds which were active during the mountain-building period known as the Variscan orogeny. This line of weakness probably featured in the earlier Caledonian Orogeny and perhaps reflects a more ancient line of weakness in the basement rocks. It is also known (in part) as the Tawe Valley Disturbance or the Swansea Valley Disturbance.[1]
^Howells, M.F. 2007 'British Regional Geology: Wales' Keyworth, Nottingham, British Geological Survey
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The CribarthDisturbance is a geological structure forming a lineament which stretches across south Wales from Swansea up the Swansea Valley then northeastwards...
structure known as the CribarthDisturbance and indeed gives its name to that regionally important structure. The Disturbance is characterised locally...
era and giving rise to the Caledonian Orogeny. The Neath Disturbance and the CribarthDisturbance are similar features also found in south Wales. The Bala...
importance of faulting and folding varying along the length of each disturbance. Column 1 indicates the name of the fold. Some variant spellings are...
is the northeast-southwest aligned Swansea Fault, a part of the CribarthDisturbance. The hill is entirely within access land and freely available to...
importance of faulting and folding varying along the length of each disturbance. Column 1 indicates the name of the fault. Note that different authors...
Formation which also occur on the nearby peak of Fan Fraith. The CribarthDisturbance, a north-east to south-west aligned zone of faulting and folding...
orogeny or mountain-building period. The Cribarth or Swansea Valley Disturbance and the Carreg Cennen Disturbance are similar features found a little further...
Strait Fault Zone Bala Fault Welsh Borderland Fault System CribarthDisturbance Neath Disturbance Each of these structures is aligned northeast - southwest...
aligned geological fault, the Cribarth Fault downthrowing to the southeast, which forms a part of the Swansea Valley Disturbance. Large parts of the mountain's...
which they pass, constitute one group. These are known as the Cribarth and Neath Disturbances. They run north-east to south-west through the area and are...
by the Neath Disturbance as it wraps around the north of Waterfall Country through the Ogof Ffynnon Ddu national nature reserve to Cribarth and the Black...
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