Chalk and Gneiss Definition

Definition of Chalk and Gneiss

The general Chalk and Gneiss definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, 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. Along with definition of Chalk and Gneiss, get to know about Properties of Chalk and Gneiss. Get to know more information about Chalk and Gneiss origin and discoverer, etymology and class.

History of Chalk and Gneiss

The history of Chalk and Gneiss 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.

Chalk and Gneiss Origin and Discoverer

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

Etymology of Chalk and Gneiss

Along with Chalk and Gneiss definition, know more about the etymology of Chalk and Gneiss. Etymology of Chalk and Gneiss gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Gneiss. The etymology of Chalk is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone while that of Gneiss is From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chalk belongs to Sedimentary Rocks while Gneiss belongs to Metamorphic Rocks. The sub-class, group and other categories of Chalk and Gneiss are listed below.

For Chalk,

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

For Gneiss,

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