Greywacke and Hornfels Definition

Definition of Greywacke and Hornfels

The general Greywacke and Hornfels definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, 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. Along with definition of Greywacke and Hornfels, get to know about Properties of Greywacke and Hornfels. Get to know more information about Greywacke and Hornfels origin and discoverer, etymology and class.

History of Greywacke and Hornfels

The history of Greywacke and Hornfels 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.

Greywacke and Hornfels Origin and Discoverer

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

Etymology of Greywacke and Hornfels

Along with Greywacke and Hornfels definition, know more about the etymology of Greywacke and Hornfels. Etymology of Greywacke and Hornfels gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Hornfels. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Hornfels is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke belongs to Sedimentary Rocks while Hornfels belongs to Metamorphic Rocks. The sub-class, group and other categories of Greywacke and Hornfels are listed below.

For Greywacke,

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

For Hornfels,

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