Pseudotachylite and Obsidian Definition

Definition of Pseudotachylite and Obsidian

The general Pseudotachylite and Obsidian definition can be stated as: Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. 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 Pseudotachylite and Obsidian, get to know about Properties of Pseudotachylite and Obsidian. Get to know more information about Pseudotachylite and Obsidian origin and discoverer, etymology and class.

History of Pseudotachylite and Obsidian

The history of Pseudotachylite 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.

Pseudotachylite and Obsidian Origin and Discoverer

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

Etymology of Pseudotachylite and Obsidian

Along with Pseudotachylite and Obsidian definition, know more about the etymology of Pseudotachylite and Obsidian. Etymology of Pseudotachylite and Obsidian gives information about origin and formation of a particular rock. Know more about Formation of Pseudotachylite and Formation of Obsidian. The etymology of Pseudotachylite is From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults. while that of Obsidian is From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Pseudotachylite belongs to Metamorphic Rocks while Obsidian belongs to Igneous Rocks. The sub-class, group and other categories of Pseudotachylite and Obsidian are listed below.

For Pseudotachylite,

• Sub-class: Durable Rock and Hard 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