extrusive

• Terme technique utilisé en géologie pour qualifier une roche magmatique qui a été éjectée à la surface de la Terre sous forme de lave ou d'autre matériau volcanique.

A technical term used in geology to describe igneous rock that has been forced out onto the Earth's surface as lava or other volcanic material.

1. Igneous rock formationC1formalscientific

   Describes igneous rock that is formed from lava that has erupted onto the Earth's surface and cooled quickly.

   Roche magmatique extrusive

   • Basalt is a common extrusive rock found in volcanic areas.
   • Extrusive rocks often have a fine-grained texture due to rapid cooling.
   • The geologist identified the sample as extrusive because of its small crystals.

   Synonymeseffusiveeruptivevolcanic

   Antonymesintrusive