Hornfels and Trondhjemite Definition

Definition of Hornfels and Trondhjemite

The general Hornfels and Trondhjemite definition can be stated as: Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. 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 Hornfels and Trondhjemite, get to know about Properties of Hornfels and Trondhjemite. Get to know more information about Hornfels and Trondhjemite origin and discoverer, etymology and class.

History of Hornfels and Trondhjemite

The history of Hornfels 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.

Hornfels and Trondhjemite Origin and Discoverer

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

Etymology of Hornfels and Trondhjemite

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

For Hornfels,

• Sub-class: Durable Rock and Soft Rock
• Group: Not applicable
• 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