Igneous Rocks: textures and compositions

igneous rock  Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth Great globs of molten rock rise toward the surface Some of the magma Summary Igneous rocks are those formed by the solidification of molten rock This molten material, which we call magma, is formed at depth

Igneous Rocks in Britain Gabbro hills in the Isle of Skye, a large intrusion formed about 50 million years ago Lava flow on the Isle of Staffa, formed Igneous rock is composed of crystals or is glassy It is formed from magma—molten or partially molten rock in the interior of Earth where temperatures are very

igneous rock A more accurate and succinct petrographic definition of 'basalt' is as follows: Basalt is a fine- grained igneous rock con- sisting of the In this video, we examine igneous rocks, including the ways in which they form and their