Slate and Greywacke Definition

Definition of Slate and Greywacke

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

History of Slate and Greywacke

The history of Slate and Greywacke 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.

Slate and Greywacke Origin and Discoverer

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

Etymology of Slate and Greywacke

Along with Slate and Greywacke definition, know more about the etymology of Slate and Greywacke. Etymology of Slate and Greywacke gives information about origin and formation of a particular rock. Know more about Formation of Slate and Formation of Greywacke. The etymology of Slate is From Old French esclate, from esclat (French éclat) while that of Greywacke is From Old French esclate, from esclat (French éclat). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Slate belongs to Metamorphic Rocks while Greywacke belongs to Sedimentary Rocks. The sub-class, group and other categories of Slate and Greywacke are listed below.

For Slate,

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

For Greywacke,

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