Stockdale Group

Geological group in northern England

Stockdale Group

Stratigraphic range: Llandovery epoch of Silurian
Type| Group
Unit of| Windermere Supergroup
Sub-units| Skelgill and Browgill formations
Underlies| Tranearth Group
Overlies| Dent Group
Thickness| up to 120m
Lithology
Primary| mudstone, siltstone
Location
Region| Northern England
Country| England
Extent| southern Lake District and Pennine inliers
Type section
Named for| Stockdale in Longsleddale

The Stockdale Group is a Silurian lithostratigraphic group (a sequence of rock strata) in the southern Lake District and Howgill Fells of the Pennines of northern England. The name is derived from the locality of Stockdale near the top of Longsleddale in Cumbria. It is included within the Windermere Supergroup. The rocks of the Group have also previously been referred to as the Stockdale Shales or Stockdale Subgroup. The group comprises limestones and oolites and some sandstones and shales which reach a maximum thickness of 120m in the area. It is divided into a lower Skelgill Formation which is overlain by an upper Browgill Formation.[1]

## References

[edit]

1. ^ "Stockdale Group". The BGS Lexicon of Named Rock Units. British Geological Survey. Retrieved January 20, 2019.

* The Geological Society (2006). Brenchley, P.J. (ed.). The Geology of England (2. ed.). London: Geological Society Publishing. pp. 124–126\. ISBN 9781862392007.124-126&rft.edition=2.&rft.pub=Geological+Society+Publishing&rft.date=2006&rft.isbn=9781862392007&rft.au=The+Geological+Society&rfr_id=info:sid/en.wikipedia.org:Stockdale+Group" class="Z3988">