Gneiss and Aplite Definition

Definition of Gneiss and Aplite

The general Gneiss and Aplite definition can be stated as: 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. On the other hand, Aplite is a fine-grained granite composed mainly of feldspar and quartz. Along with definition of Gneiss and Aplite, get to know about Properties of Gneiss and Aplite. Get to know more information about Gneiss and Aplite origin and discoverer, etymology and class.

History of Gneiss and Aplite

The history of Gneiss and Aplite 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.

Gneiss and Aplite Origin and Discoverer

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

Etymology of Gneiss and Aplite

Along with Gneiss and Aplite definition, know more about the etymology of Gneiss and Aplite. Etymology of Gneiss and Aplite gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Aplite. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Aplite is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Aplite belongs to Igneous Rocks. The sub-class, group and other categories of Gneiss and Aplite are listed below.

For Gneiss,

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

For Aplite,

• Sub-class: Durable Rock and Hard Rock
• Group: Plutonic
• Other Categories: Fine grained rock and Opaque rock