Chert and Trondhjemite Definition

Definition of Chert and Trondhjemite

The general Chert and Trondhjemite definition can be stated as: Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. On the other hand, 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.. Along with definition of Chert and Trondhjemite, get to know about Properties of Chert and Trondhjemite. Get to know more information about Chert and Trondhjemite origin and discoverer, etymology and class.

History of Chert and Trondhjemite

The history of Chert and Trondhjemite 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.

Chert and Trondhjemite Origin and Discoverer

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

Etymology of Chert and Trondhjemite

Along with Chert and Trondhjemite definition, know more about the etymology of Chert and Trondhjemite. Etymology of Chert and Trondhjemite gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Trondhjemite. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Trondhjemite is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert belongs to Sedimentary Rocks while Trondhjemite belongs to Igneous Rocks. The sub-class, group and other categories of Chert and Trondhjemite are listed below.

For Chert,

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

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