Dartmouth Group

Dartmouth Group
Stratigraphic range: Lochkovian to Pragian (Devonian)

Rocks of the Dartmouth group at Sugary Cove near Dartmouth
Type Group
Sub-units Whitsand Bay Formation, Bin Down Formation
Underlies Meadfoot Group
Thickness up to 3300m
Lithology
Primary mudstones,
Other siltstones, sandstones, basaltic lavas, tuffs, hyaloclastite
Location
Region England
Country United Kingdom
Extent north and east Cornwall to southeast Devon
Type section
Named for Dartmouth

The Dartmouth Group is an early Devonian lithostratigraphic group (a sequence of rock strata) from north and east Cornwall to southeast Devon in southwest England. The name is derived from the port of Dartmouth. The Group comprises (in ascending order i.e. oldest first) the Whitsand Bay and Bin Down formations. The type area is along the southeast coast of Cornwall. The sequence has had various earlier names including the Dartmouth Beds or Slates.[1]

References

  1. http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=DRTM (BGS on-line lexicon of rock units)
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