Chert and Basaltic Trachyandesite Types and Facts

Chert

Basaltic Trachyandesite

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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

Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite

Has High structural resistance against erosion and climate, Very fine grained rock

Absent

Types of Chert and Basaltic Trachyandesite

Some rocks according to their use or texture are classified into different types. Know more about Chert Texture and Basaltic Trachyandesite Texture. The types of Chert and Basaltic Trachyandesite 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 Basaltic Trachyandesite 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 Basaltic Trachyandesite were for creating petroglyphs.