Just about all materials contract when they cool. As newly solidifies lava or magma cools and contracts, the stress often creates cracks.
The rocks that are formed from cooling of lava are known as Igneous rocks.
A rock formed from cooling lava is classified as an igneous rock. Igneous rocks are formed from the cooling and solidification of magma/lava. They can be further classified based on their mineral composition, texture, and formation process.
Magmatic (lava) cooling.
usually it depends on the rate of cooling of the lava....
Igneous rock, such as basalt or andesite, results from the cooling of lava from a volcano.
A long crack from which lava flows is called a fissure.
The rocks that are formed from cooling of lava are known as Igneous rocks.
Pumice is the result of extremely fast cooling lava.
A rock formed from cooling lava is classified as an igneous rock. Igneous rocks are formed from the cooling and solidification of magma/lava. They can be further classified based on their mineral composition, texture, and formation process.
Magmatic (lava) cooling.
Lava
usually it depends on the rate of cooling of the lava....
Igneous rock, such as basalt or andesite, results from the cooling of lava from a volcano.
A chimney
From cooling and hardening
cooling lava from volcanoes.
Cooling of lava.