Gneiss and Siltstone Definition

Definition of Gneiss and Siltstone

The general Gneiss and Siltstone definition can be stated as: Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. On the other hand, Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt. Along with definition of Gneiss and Siltstone, get to know about Properties of Gneiss and Siltstone. Get to know more information about Gneiss and Siltstone origin and discoverer, etymology and class.

History of Gneiss and Siltstone

The history of Gneiss and Siltstone 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.

Gneiss and Siltstone Origin and Discoverer

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

Etymology of Gneiss and Siltstone

Along with Gneiss and Siltstone definition, know more about the etymology of Gneiss and Siltstone. Etymology of Gneiss and Siltstone gives information about origin and formation of a particular rock. Know more about Formation of Gneiss and Formation of Siltstone. The etymology of Gneiss is From the Middle High German verb gneist (to spark; so called because the rock glitters) while that of Siltstone is From the Middle High German verb gneist (to spark; so called because the rock glitters). The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Gneiss belongs to Metamorphic Rocks while Siltstone belongs to Sedimentary Rocks. The sub-class, group and other categories of Gneiss and Siltstone are listed below.

For Gneiss,

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

For Siltstone,

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