Trondhjemite and Andesite Definition

Definition of Trondhjemite and Andesite

The general Trondhjemite and Andesite 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, Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. Along with definition of Trondhjemite and Andesite, get to know about Properties of Trondhjemite and Andesite. Get to know more information about Trondhjemite and Andesite origin and discoverer, etymology and class.

History of Trondhjemite and Andesite

The history of Trondhjemite and Andesite 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 Andesite Origin and Discoverer

Trondhjemite and Andesite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Trondhjemite and Andesite. In this section, you will know about Trondhjemite and Andesite Origin and Discoverer. Origin of Trondhjemite is Tonale, Italy whereas Origin of Andesite is North America. It is interesting to know the name of Trondhjemite and Andesite discoverer. The Discoverer of Trondhjemite is Unknown and the discoverer of Andesite is Theodor von Gümbel.

Etymology of Trondhjemite and Andesite

Along with Trondhjemite and Andesite definition, know more about the etymology of Trondhjemite and Andesite. Etymology of Trondhjemite and Andesite gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Andesite. The etymology of Trondhjemite is From Trondheim, Norway while that of Andesite 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 Andesite belong to Igneous Rocks. The sub-class, group and other categories of Trondhjemite and Andesite 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 Andesite,

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