Greywacke and Chalk Definition

Greywacke

Chalk

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1 Definition

1.1 Definition

Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay

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 German Grauwacke, from grau grey + wacke

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 Greywacke and Chalk

The general Greywacke and Chalk definition can be stated as: Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. On the other hand, Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. Along with definition of Greywacke and Chalk, get to know about Properties of Greywacke and Chalk. Get to know more information about Greywacke and Chalk origin and discoverer, etymology and class.

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History of Greywacke and Chalk

The history of Greywacke 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.

Greywacke and Chalk Origin and Discoverer

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

Etymology of Greywacke and Chalk

Along with Greywacke and Chalk definition, know more about the etymology of Greywacke and Chalk. Etymology of Greywacke and Chalk gives information about origin and formation of a particular rock. Know more about Formation of Greywacke and Formation of Chalk. The etymology of Greywacke is From German Grauwacke, from grau grey + wacke while that of Chalk is From German Grauwacke, from grau grey + wacke. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Greywacke and Chalk belong to Sedimentary Rocks. The sub-class, group and other categories of Greywacke and Chalk are listed below.

For Greywacke,