The Inverclyde Group is a Carboniferous

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) in southern

Scotland Scotland (, ) is a Countries of the United Kingdom, country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a Anglo-Scottish border, border with England to the southeast ...

and northernmost

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

. The name is derived from

Inverclyde Inverclyde ( sco, Inerclyde, gd, Inbhir Chluaidh, , "mouth of the Clyde") is one of 32 council areas used for local government in Scotland. Together with the East Renfrewshire and Renfrewshire council areas, Inverclyde forms part of the hist ...

. The rocks of the Inverclyde Group have also previously been referred to as the Cementstone Group and Stirling Group. The group comprises

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

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

s and dolomites and some mudstone and lesser amounts of siltstone.

References

* {{Refend Carboniferous System of Europe Geology of England Geology of Scotland Geological groups of the United Kingdom Geologic formations of the United Kingdom