The Strathmore Group is a

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, w ...

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 igneous ...

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 geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as e ...

) in central

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to th ...

. Its

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 are interbedded with

siltstone Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, ...

s which interfinger with conglomerates. It is encountered from

Arran Arran may refer to: Places * Isle of Arran, Scotland * Aran Islands, County Galway, Ireland * Arranmore, County Donegal, Ireland, also known in English as Aran Island * Arran (Caucasus), or Caucasian Albania, a historical region * Arran, Sask ...

in the west across the Midland Valley to

Stonehaven Stonehaven ( , ) is a town in Scotland. It lies on Scotland's northeast coast and had a population of 11,602 at the 2011 Census. After the demise of the town of Kincardine, which was gradually abandoned after the destruction of its royal cast ...

in the east. The name is derived from

Strathmore, Angus Strathmore ( Gaelic: ''An Srath Mòr'') is a strath in east central Scotland running from northeast to southwest between the Grampian mountains and the Sidlaws. It is approximately 50 miles (80 km) long and 10 miles (16 km) wide. Str ...

where this sequence occupies the axis of the Strathmore Syncline which runs for many tens of miles parallel to and south of the

Highland Boundary Fault The Highland Boundary Fault is a major fault zone that traverses Scotland from Arran and Helensburgh on the west coast to Stonehaven in the east. It separates two different geological terranes which give rise to two distinct physiographic ter ...

. The rocks of the Strathmore Group have also previously been referred to as the Strathmore Beds.

References

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