Trondhjemite and Greywacke Definition

Definition of Trondhjemite and Greywacke

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

History of Trondhjemite and Greywacke

The history of Trondhjemite 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.

Trondhjemite and Greywacke Origin and Discoverer

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

Etymology of Trondhjemite and Greywacke

Along with Trondhjemite and Greywacke definition, know more about the etymology of Trondhjemite and Greywacke. Etymology of Trondhjemite and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Greywacke. The etymology of Trondhjemite is not available while that of Greywacke is not available. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trondhjemite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks. The sub-class, group and other categories of Trondhjemite and Greywacke 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 Greywacke,

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