Trondhjemite and Chalk Definition

Definition of Trondhjemite and Chalk

The general Trondhjemite and Chalk 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, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Trondhjemite and Chalk, get to know about Properties of Trondhjemite and Chalk. Get to know more information about Trondhjemite and Chalk origin and discoverer, etymology and class.

History of Trondhjemite and Chalk

The history of Trondhjemite and Chalk 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 Chalk Origin and Discoverer

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

Etymology of Trondhjemite and Chalk

Along with Trondhjemite and Chalk definition, know more about the etymology of Trondhjemite and Chalk. Etymology of Trondhjemite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Trondhjemite and Formation of Chalk. The etymology of Trondhjemite is not available while that of Chalk 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 Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Trondhjemite and Chalk 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 Chalk,

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