Greywacke and Slate Definition

Definition of Greywacke and Slate

The general Greywacke and Slate 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, Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. Along with definition of Greywacke and Slate, get to know about Properties of Greywacke and Slate. Get to know more information about Greywacke and Slate origin and discoverer, etymology and class.

History of Greywacke and Slate

The history of Greywacke and Slate 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 Slate Origin and Discoverer

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

Etymology of Greywacke and Slate

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

For Greywacke,

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

For Slate,

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