Bala Fault

In the offshore area it is a major normal fault and forms the bounding structure to the Cardigan Bay Basin, with a fill including about 2,500 metres (8,200 ft) of Lias Group.

[1] Onshore, it is responsible for the lineament which runs through Bala and south of Cadair Idris to the coast at Tywyn.

At its northeastern end it links to the similarly orientated Llanelidan Fault.

The fault is believed to have experienced two separate stages of movement.

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