Scotland's Earth Heritage and Landscape

Scotland’s rocks, fossils, landforms and soils

A brief geological history of Scotland

For its size, Scotland has the most varied geology and landforms in the world. The science of geology was born here 200 years ago when James Hutton, an Edinburgh doctor and farmer, investigated the rocks around Scotland and further afield. Hutton’s discoveries paved the way for later geologists to unravel the breathtaking tale of how Scotland has been 3 billion years in the making. This tale reveals that Scotland was once part of North America; that a great ocean once separated Scotland from England; and that for 600 million years Scotland has drifted slowly from south to north across the equator.

Some of Scotland’s rocks formed from molten lava, erupted from volcanoes. Others formed from mud and sand, deposited in ancient environments as diverse as shallow tropical seas and scorching deserts. The remains of plants and animals, representing the fauna and flora of past geological ages, occur as fossils within these rocks. Scotland’s oldest rocks were subjected to enormous temperatures and pressures whilst buried deep within the crust and bear witness to Scotland’s journey across the face of the Earth.

Over the last two million years the ice age glaciers carved and moulded many of the landforms we see today. Glaciers eroded the underlying rocks and laid down new deposits of till and gravel. They were also responsible for changes in the relative levels of the land and sea and changes in river courses.

At the end of the ice age around 11,500 years ago, the deposits left by the glaciers were colonised by micro-organisms and plants. This transformed the deposits into a living and productive soil, that forms an interface between the geology and biosphere. The soil is the basis for Scotland’s habitats and ecosystems. Scotland’s landscape is still evolving. We sometimes feel earthquakes and on the surface we can see the coastline changing, rivers flooding and occasional landslides.

For more detailed information on Scotland’s geology, geomorphology and geologists, visit the scottishgeology.com website.