WitrynaPumice is another name for volcanic rock. It is produced when lava with a very high content of water and gas is discharged from a volcano. WitrynaLava that cools extremely quickly may not form crystals at all, even microscopic ones. The resulting rock is called volcanic glass. Obsidian is a rock consisting of volcanic …

Shiprock - Wikipedia

WitrynaSubmarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean … WitrynaFigure 2.28 also includes names of volcanic rocks but this is a bit misleading because the names of volcanic rocks better reflect overall rock composition than rock mineralogy. As pointed out previously, many volcanic rocks contain significant amounts of glass and sometimes no visible mineral crystals at all. So, although they could be … matting agent for oil based paint

Volcanic and Extrusive Igneous Rocks - ThoughtCo

WitrynaJun 23, 2024 – Three basic types of Volcanic Rock Basalt contains a lot of iron but not much silica. Andesite is lighter coloured than basalt because it contains less iron and more silica Rhyolite is light-coloured or white – this is a clue that the rock contains a lot of silica and not much iron or magnesium. Witryna18 maj 2013 · What is the name for volcanic rock? Volcanic rock may also be called extrusive igneous rock. If you are looking for a specific name, there are many varieties. WitrynaM Phyllite – a low grade metamorphic rock composed mostly of micaceous minerals. I Plutonic rocks – intrusive rocks that crystallized from magma slowly cooling below … here with me 1 hour marshmello