Trachyte and Chalk Definition

Definition of Trachyte and Chalk

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

History of Trachyte and Chalk

The history of Trachyte 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.

Trachyte and Chalk Origin and Discoverer

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

Etymology of Trachyte and Chalk

Along with Trachyte and Chalk definition, know more about the etymology of Trachyte and Chalk. Etymology of Trachyte and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Trachyte and Formation of Chalk. The etymology of Trachyte is From Greek trakhus rough’ or trakhutēs roughness while that of Chalk is From Greek trakhus rough’ or trakhutēs roughness. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Trachyte belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks. The sub-class, group and other categories of Trachyte and Chalk are listed below.

For Trachyte,

• 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