Obsidian and Pseudotachylite Definition

Definition of Obsidian and Pseudotachylite

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

History of Obsidian and Pseudotachylite

The history of Obsidian and Pseudotachylite 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.

Obsidian and Pseudotachylite Origin and Discoverer

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

Etymology of Obsidian and Pseudotachylite

Along with Obsidian and Pseudotachylite definition, know more about the etymology of Obsidian and Pseudotachylite. Etymology of Obsidian and Pseudotachylite gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Pseudotachylite. The etymology of Obsidian is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius while that of Pseudotachylite is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks. The sub-class, group and other categories of Obsidian and Pseudotachylite are listed below.

For Obsidian,

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

For Pseudotachylite,

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