Mudstone and Obsidian Definition

Definition of Mudstone and Obsidian

The general Mudstone and Obsidian definition can be stated as: Mudstone is a fine-grained, dark gray sedimentary rock, which is formed from silt and clay and is similar to shale but has less laminations. On the other hand, Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Along with definition of Mudstone and Obsidian, get to know about Properties of Mudstone and Obsidian. Get to know more information about Mudstone and Obsidian origin and discoverer, etymology and class.

History of Mudstone and Obsidian

The history of Mudstone and Obsidian gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Mudstone and Obsidian Origin and Discoverer

Mudstone and Obsidian definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Mudstone and Obsidian. In this section, you will know about Mudstone and Obsidian Origin and Discoverer. Origin of Mudstone is Unknown whereas Origin of Obsidian is Ethiopia. It is interesting to know the name of Mudstone and Obsidian discoverer. The Discoverer of Mudstone is Unknown and the discoverer of Obsidian is Obsius.

Etymology of Mudstone and Obsidian

Along with Mudstone and Obsidian definition, know more about the etymology of Mudstone and Obsidian. Etymology of Mudstone and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Mudstone and Formation of Obsidian. The etymology of Mudstone is From the English mud and stone, from low German mudde and stainaz while that of Obsidian is From the English mud and stone, from low German mudde and stainaz. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Mudstone belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks. The sub-class, group and other categories of Mudstone and Obsidian are listed below.

For Mudstone,

• Sub-class: Durable Rock and Soft Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock

For Obsidian,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Opaque rock