Rhyodacite and Chalk Definition

Definition of Rhyodacite and Chalk

The general Rhyodacite and Chalk definition can be stated as: Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Rhyodacite and Chalk, get to know about Properties of Rhyodacite and Chalk. Get to know more information about Rhyodacite and Chalk origin and discoverer, etymology and class.

History of Rhyodacite and Chalk

The history of Rhyodacite 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.

Rhyodacite and Chalk Origin and Discoverer

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

Etymology of Rhyodacite and Chalk

Along with Rhyodacite and Chalk definition, know more about the etymology of Rhyodacite and Chalk. Etymology of Rhyodacite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Rhyodacite and Formation of Chalk. The etymology of Rhyodacite is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite while that of Chalk is Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Rhyodacite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Rhyodacite and Chalk are listed below.

For Rhyodacite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Fine 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