Greywacke and Picrite Definition

Definition of Greywacke and Picrite

The general Greywacke and Picrite 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, Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. Along with definition of Greywacke and Picrite, get to know about Properties of Greywacke and Picrite. Get to know more information about Greywacke and Picrite origin and discoverer, etymology and class.

History of Greywacke and Picrite

The history of Greywacke and Picrite 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 Picrite Origin and Discoverer

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

Etymology of Greywacke and Picrite

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

For Greywacke,

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

For Picrite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Fine grained rock and Opaque rock