The Dalby Group is a
Silurian lithostratigraphic
Lithostratigraphy is a sub-discipline of stratigraphy, the geological science associated with the study of strata or rock layers. Major focuses include geochronology, comparative geology, and petrology.
In general, strata are primarily igneou ...
group
A group is a number of persons or things that are located, gathered, or classed together.
Groups of people
* Cultural group, a group whose members share the same cultural identity
* Ethnic group, a group whose members share the same ethnic ide ...
(a sequence of
rock strata) on the west coast of the
Isle of Man
)
, anthem = "O Land of Our Birth"
, image = Isle of Man by Sentinel-2.jpg
, image_map = Europe-Isle_of_Man.svg
, mapsize =
, map_alt = Location of the Isle of Man in Europe
, map_caption = Location of the Isle of Man (green)
in Europe ...
in the
Irish Sea
The Irish Sea or , gv, Y Keayn Yernagh, sco, Erse Sie, gd, Muir Èireann , Ulster-Scots: ''Airish Sea'', cy, Môr Iwerddon . is an extensive body of water that separates the islands of Ireland and Great Britain. It is linked to the Ce ...
. The name is derived from the village of
Dalby near the west coast of the island. Together with those of the adjoining
Manx Group, the rocks of the Group have also previously been referred to as the Manx Slates or Manx Slate Series. The group comprises wacke
sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks.
Most sandstone is composed of quartz or feldspar (both silicates ...
s with
siltstones and
mudstones which reach a thickness of about 1200m in the west of the island. It contains only the single Niarbyl Formation which is exposed along the coast between
Niarbyl Point and the town of
Peel to the north.
References
*
{{Refend
Silurian System of Europe
Geological groups of the United Kingdom
Geology of the Isle of Man