approaching the North Fort, Berry Head |
loess: a shallow layer of ancient silt forming a fertile topsoil for the limestone headland - a deposit of silty sediment blown high into the atmosphere by fierce glacial winds during the time of the Ice Ages
This .....reflects that the times of peak loessic silt production, and its deposition were during the ice ages themselves, not afterwards. Also we know definitely that the loess does not all date from the last ice age (though some of it will, of course). There are enough ancient loessic-derived cave earths around our part of Devon that predate the last (Devensian) glaciation that we can be confident about this.
(with thanks to Dr Chris Proctor)
posted by Kate
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