Scoria and Gneiss Definition

Definition of Scoria and Gneiss

The general Scoria and Gneiss definition can be stated as: Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. 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 Scoria and Gneiss, get to know about Properties of Scoria and Gneiss. Get to know more information about Scoria and Gneiss origin and discoverer, etymology and class.

History of Scoria and Gneiss

The history of Scoria 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.

Scoria and Gneiss Origin and Discoverer

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

Etymology of Scoria and Gneiss

Along with Scoria and Gneiss definition, know more about the etymology of Scoria and Gneiss. Etymology of Scoria and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Scoria and Formation of Gneiss. The etymology of Scoria is From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung while that of Gneiss is From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Scoria belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Scoria and Gneiss are listed below.

For Scoria,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• 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