One of England's highest mountains, standing at 949 metres above sea level in the Lake District in north-west England
Helvellyn
Made up of igneous rocks which were formed 450 million years ago
Landscape features in the Lake District
Formed during the last ice age over 20,000 years ago
Large glaciers dominated the landscape and through their erosive power, carved out classic glaciated landforms such as arêtes, corries and glacial troughs
Main rock types in the UK
Igneous
Sedimentary
Metamorphic
Igneous rocks
Result of volcanic activity in the past, when Britain was close to a plate boundary
Some formed by lava erupting at constructive plate boundaries, cooling and solidifying to form basalt rock
Others formed by hot molten magma beneath the Earth's surface cooling and solidifying as an intrusive rock under the ground, such as granite
Sedimentary rocks
Made up of small particles of sand and rock, transported by the wind, rivers and ice and deposited on lake or seabed
Successive layers of sediments accumulate and are compressed by the weight of the deposits above, into sedimentary rocks
Formed in layers, known as bedding planes
Examples include sandstone, clay, limestone and chalk
Metamorphic rocks
Rocks that have been changed in shape and form by intense heat and pressure at a plate boundary or along a fault line
Start as either igneous or sedimentary rocks and are crystallised under the intense heat and pressure conditions to form rocks such as slates, schists, and marble
Very hard in nature and are often used as roof material
Many of these rocks were formed over 300 million years ago, in warm tropical seas during the carboniferous period
The existence of these rocks is evidence that Britain was at a different latitude compared to today, suggesting movement of continental areas of the globe, which is explained by the modern theory of plate tectonics
Helvellyn
One of England's highest mountains, standing at 949 metres above sea level in the Lake District in north-west England
Helvellyn
Made up of igneous rocks which were formed 450 million years ago
Landscape features in the Lake District
Formed during the last ice age over 20,000 years ago
Large glaciers dominated the landscape and through their erosive power, carved out classic glaciated landforms such as arêtes, corries and glacial troughs
Main rock types in the UK
Igneous
Sedimentary
Metamorphic
Igneous rocks
Result of volcanic activity in the past, when Britain was close to a plate boundary
Some formed by lava erupting at constructive plate boundaries, cooling and solidifying to form basalt rock
Others formed by hot molten magma beneath the Earth's surface cooling and solidifying as an intrusive rock under the ground, such as granite
Sedimentary rocks
Made up of small particles of sand and rock, transported by the wind, rivers and ice and deposited on lake or seabed
Successive layers of sediments accumulate and are compressed by the weight of the deposits above, into sedimentary rocks
Formed in layers, known as bedding planes
Examples include sandstone, clay, limestone and chalk
Metamorphic rocks
Rocks that have been changed in shape and form by intense heat and pressure at a plate boundary or along a fault line
Start as either igneous or sedimentary rocks and are crystallised under the intense heat and pressure conditions to form rocks such as slates, schists, and marble
Very hard in nature and are often used as roof material
Many of these rocks were formed over 300 million years ago, in warm tropical seas during the carboniferous period
The existence of these rocks is evidence that Britain was at a different latitude compared to today
This suggests movement of continental areas of the globe, which is explained by the modern theory of plate tectonics