I'm new to the idea of the Bouma Sequence. Today we went looking for evidence of what happened at the bottom of the Iapetus Ocean 480 million years ago. We climbed up from the back car park between Ling Fell and Sale Fell and examined the first narrow exposure on the south-west edge of the fell. Bouma suggested that when there were "landslides" down the continental shelf under the sea, the sediments would settle out in a particular order. The explanation is here. The second example picture at the bottom of that article is particularly helpful. A good diagram is here. We think we found part C of the sequence, stood vertically on end.
