Fish Bed Formation

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Fish Bed Formation
Stratigraphic range: Wenlock
~428–423  Ma
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S
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Type Formation
Unit of Glenbuck Group
Lithology
Primary Sandstone, conglomerate
Other Shale, siltstone
Location
Coordinates 55°30′N3°54′W / 55.5°N 3.9°W / 55.5; -3.9
Approximate paleocoordinates 17°54′S18°18′W / 17.9°S 18.3°W / -17.9; -18.3
Region South Lanarkshire
CountryScotland
Scotland relief location map.jpg
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Fish Bed Formation (Scotland)

The Fish Bed Formation is a geological formation in Scotland, United Kingdom. The fluvial to lacustrine sandstones, shales, siltstones and conglomerates preserve flora, arthropods, among which eurypterids, invertebrates and early fish fossils dating back to the Wenlock epoch of the Silurian period. [1]

Contents

Description

Paleogeography of the Early Silurian, 435 Ma Silurian plate tectonics.png
Paleogeography of the Early Silurian, 435 Ma

The fish beds are contained within red-bed sequences comprising conglomerates, sandstones and siltstones that exhibit sedimentological features suggestive of deposition in terrestrial–fluviatile and lacustrine environments (Bluck 2002). The sporomorph assemblage from the Fish Bed Formation indicates that it is entirely non-marine and was most likely deposited in a relatively permanent lacustrine setting (Wellman and Richardson 1993). [2]

The formation, at the time part of Avalonia, was deposited during the Grampian orogeny.

Fossil content

The Fish Bed Formation has provided fossils of: [1]

Fish

Arthropods

Eurypterids

Invertebrates

Gastropods

Flora

See also

References

  1. 1 2 Fish Bed Formation at Fossilworks.org
  2. ↑ Smithy Burn, Hagshaw Hills Inlier at Fossilworks.org
  3. 1 2 3 4 5 6 7 8 Plotnick, 1999
  4. ↑ Wilson, 2005

Bibliography

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