Trondhjemite and Shoshonite Definition

Definition of Trondhjemite and Shoshonite

The general Trondhjemite and Shoshonite definition can be stated as: Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. On the other hand, 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. Along with definition of Trondhjemite and Shoshonite, get to know about Properties of Trondhjemite and Shoshonite. Get to know more information about Trondhjemite and Shoshonite origin and discoverer, etymology and class.

History of Trondhjemite and Shoshonite

The history of Trondhjemite and Shoshonite 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.

Trondhjemite and Shoshonite Origin and Discoverer

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

Etymology of Trondhjemite and Shoshonite

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

For Trondhjemite,

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

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