Pseudotachylite and Gneiss Definition

Definition of Pseudotachylite and Gneiss

The general Pseudotachylite and Gneiss 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, Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Along with definition of Pseudotachylite and Gneiss, get to know about Properties of Pseudotachylite and Gneiss. Get to know more information about Pseudotachylite and Gneiss origin and discoverer, etymology and class.

History of Pseudotachylite and Gneiss

The history of Pseudotachylite and Gneiss 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 Gneiss Origin and Discoverer

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

Etymology of Pseudotachylite and Gneiss

Along with Pseudotachylite and Gneiss definition, know more about the etymology of Pseudotachylite and Gneiss. Etymology of Pseudotachylite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Pseudotachylite and Formation of Gneiss. The etymology of Pseudotachylite is From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults. while that of Gneiss 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 and Gneiss belong to Metamorphic Rocks. The sub-class, group and other categories of Pseudotachylite and Gneiss are listed below.

For Pseudotachylite,

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

For Gneiss,

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