Shoshonite and Gneiss Definition

Definition of Shoshonite and Gneiss

The general Shoshonite and Gneiss definition can be stated as: Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. 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 Shoshonite and Gneiss, get to know about Properties of Shoshonite and Gneiss. Get to know more information about Shoshonite and Gneiss origin and discoverer, etymology and class.

History of Shoshonite and Gneiss

The history of Shoshonite 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.

Shoshonite and Gneiss Origin and Discoverer

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

Etymology of Shoshonite and Gneiss

Along with Shoshonite and Gneiss definition, know more about the etymology of Shoshonite and Gneiss. Etymology of Shoshonite and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Shoshonite and Formation of Gneiss. The etymology of Shoshonite is From the place of origin called Shoshone riverin Wyoming while that of Gneiss is From the place of origin called Shoshone riverin Wyoming. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Shoshonite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Shoshonite and Gneiss are listed below.

For Shoshonite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Coarse grained rock, Fine grained rock, Medium 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