Focus on Sedimentary Environments
Ancient marine carbonate gravels
Caswell Bay, Gower, South Wales, UK
A closer view of the contact. The coin is 27 mm in diameter.
Conditions of sedimentation
The basal contact clearly cuts down, or channels, into the underlying sand-size sediment
The sharp, erosive contact and the grading within the coarse bed suggest a
short-lived
,
high energy event
in which the energy waned with time
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; last updated 13 August, 2002
