Shoshonite and Greywacke Definition

Definition of Shoshonite and Greywacke

The general Shoshonite and Greywacke 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, Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Along with definition of Shoshonite and Greywacke, get to know about Properties of Shoshonite and Greywacke. Get to know more information about Shoshonite and Greywacke origin and discoverer, etymology and class.

History of Shoshonite and Greywacke

The history of Shoshonite and Greywacke 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 Greywacke Origin and Discoverer

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

Etymology of Shoshonite and Greywacke

Along with Shoshonite and Greywacke definition, know more about the etymology of Shoshonite and Greywacke. Etymology of Shoshonite and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Shoshonite and Formation of Greywacke. The etymology of Shoshonite is From the place of origin called Shoshone riverin Wyoming while that of Greywacke 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 Greywacke belongs to Sedimentary Rocks. The sub-class, group and other categories of Shoshonite and Greywacke 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 Greywacke,

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