Arkose and Chalk Definition

Definition of Arkose and Chalk

The general Arkose and Chalk definition can be stated as: Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Arkose and Chalk, get to know about Properties of Arkose and Chalk. Get to know more information about Arkose and Chalk origin and discoverer, etymology and class.

History of Arkose and Chalk

The history of Arkose and Chalk 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.

Arkose and Chalk Origin and Discoverer

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

Etymology of Arkose and Chalk

Along with Arkose and Chalk definition, know more about the etymology of Arkose and Chalk. Etymology of Arkose and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Arkose and Formation of Chalk. The etymology of Arkose is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones while that of Chalk is From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Arkose and Chalk belong to Sedimentary Rocks. The sub-class, group and other categories of Arkose and Chalk are listed below.

For Arkose,

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

For Chalk,

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