Chalk and Rhyolite Definition

Definition of Chalk and Rhyolite

The general Chalk and Rhyolite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Rhyolite is a fine-grained igneous rock which is rich in silica. Along with definition of Chalk and Rhyolite, get to know about Properties of Chalk and Rhyolite. Get to know more information about Chalk and Rhyolite origin and discoverer, etymology and class.

History of Chalk and Rhyolite

The history of Chalk and Rhyolite 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 Rhyolite Origin and Discoverer

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

Etymology of Chalk and Rhyolite

Along with Chalk and Rhyolite definition, know more about the etymology of Chalk and Rhyolite. Etymology of Chalk and Rhyolite gives information about origin and formation of a particular rock. Know more about Formation of Chalk and Formation of Rhyolite. 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 Rhyolite 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 Rhyolite belongs to Igneous Rocks. The sub-class, group and other categories of Chalk and Rhyolite are listed below.

For Chalk,

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

For Rhyolite,

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