The Papa Group are a Triassic lithostratigraphic group (a sequence of rock strata) beneath the seas northwest of Britain, and which originated as alluvial deposits.Stratigraphic Chart of the United Kingdom:Northern Britain, British Geological Survey It is the lateral equivalent of the combined Mercia Mudstone and Sherwood Sandstone Groups in the Irish Sea and onshore Britain. It contains the Otter Bank Formation and the Foula Formation.
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