Argillite and Chalk Definition

Argillite

Chalk

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1 Definition

1.1 Definition

Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate

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 Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite

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, Soft Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Definition of Argillite and Chalk

The general Argillite and Chalk definition can be stated as: Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Argillite and Chalk, get to know about Properties of Argillite and Chalk. Get to know more information about Argillite and Chalk origin and discoverer, etymology and class.

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History of Argillite and Chalk

The history of Argillite 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.

Argillite and Chalk Origin and Discoverer

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

Etymology of Argillite and Chalk

Along with Argillite and Chalk definition, know more about the etymology of Argillite and Chalk. Etymology of Argillite and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Argillite and Formation of Chalk. The etymology of Argillite is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite while that of Chalk is From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Argillite and Chalk belong to Sedimentary Rocks. The sub-class, group and other categories of Argillite and Chalk are listed below.

For Argillite,