Chert and Chalk Types and Facts

Chert

Chalk

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate

Present

Chalk Marl and Marl

Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock

Present

Types of Chert and Chalk

Some rocks according to their use or texture are classified into different types. Know more about Chert Texture and Chalk Texture. The types of Chert and Chalk are .During historic times, some rocks depending on their hardness were used to create Pictographs and Petroglyphs. Rocks which are hard were generally not used. Pictographs are paintings or drawings that have been placed or created on the surface of rock. Chert and Chalk were for creating pictographs. Petroglyph is an image which is carved into a rock. These are images created by removing part of a rock surface by incising, picking, carving or abrading, as a form of rock art. Chert and Chalk were for creating petroglyphs.