Chalk and Shoshonite Definition

Definition of Chalk and Shoshonite

The general Chalk and Shoshonite definition can be stated as: Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. On the other hand, Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass. Along with definition of Chalk and Shoshonite, get to know about Properties of Chalk and Shoshonite. Get to know more information about Chalk and Shoshonite origin and discoverer, etymology and class.

History of Chalk and Shoshonite

The history of Chalk and Shoshonite 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 Shoshonite Origin and Discoverer

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

Etymology of Chalk and Shoshonite

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

For Chalk,

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

For Shoshonite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock