Chert and Chalk Definition

Chert

Chalk

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1 Definition

1.1 Definition

Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture

Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers

1.2 History

1.2.1 Origin

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use

From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone

1.4 Class

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Definition of Chert and Chalk

The general Chert and Chalk definition can be stated as: Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Chert and Chalk, get to know about Properties of Chert and Chalk. Get to know more information about Chert and Chalk origin and discoverer, etymology and class.

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History of Chert and Chalk

The history of Chert 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.

Chert and Chalk Origin and Discoverer

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

Etymology of Chert and Chalk

Along with Chert and Chalk definition, know more about the etymology of Chert and Chalk. Etymology of Chert and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Chert and Formation of Chalk. The etymology of Chert is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use while that of Chalk is From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Chert and Chalk belong to Sedimentary Rocks. The sub-class, group and other categories of Chert and Chalk are listed below.

For Chert,