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Papa Group
The Papa Group is 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. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Papa Group」の詳細全文を読む
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