Local Rocks

Within easy reach of Glasgow there lies a rich variety of igneous, sedimentary and metamorphic rocks. These rocks were laid down during a period of over 500 million years, starting in the Neoproterozoic period (1000 to 541 Ma) and finishing in the Triassic period (252 Ma to 201 Ma).

(A chronostratigraphic chart describing the internationally agreed geological time scale can be found here.)

The map shows the varied geology of the extended Glasgow area with a key to the colours and numbering used. You can view information about the rock cycle, minerals and types of rock from the links below the map and use the markers on the map to find out about each of twelve selected sites in the area. The site information is also accessible from the links in the sites list at the bottom of the page.

Minerals, Rocks & Fossils

Rock-forming Minerals

A mineral is a naturally occurring inorganic solid with an orderly crystalline structure and a well-defined chemical composition.

Find out more

The Rock Cycle

The rock cycle is a process in which rocks are continuously transformed between the three rock types igneous, sedimentary and metamorphic.

Find out more

Igneous Rocks

Igneous rocks are formed when molten material from within the Earth, called magma, cools down and solidifies forming crystals.

Find out more

Sedimentary Rocks

Sedimentary rocks are formed by the consolidation of sediments which settle out of water, ice or air and are accumulated on the Earth's surface.

Find out more

Metamorphic Rocks

Metamorphic rocks are formed when pre-existing rocks are altered by high pressure, high temperature, or a combination of the two.

Find out more

Scottish Fossils

Scottish fossils are very varied, reflecting the different tectonic settings that Scotland has experienced throughout geologic time.

Find out more

Selected Sites