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Gneiss
Gneiss

Chert
Chert



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Chert

Gneiss and Chert Types and Facts

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1 Types
1.1 Types
Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter
1.2 Features
Generally rough to touch, Is one of the oldest rock
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
1.3 Archaeological Significance
1.3.1 Monuments
Used
Used
1.3.2 Famous Monuments
Konark Sun Temple in India, Washington Monument, US
Data Not Available
1.3.3 Sculpture
Not Yet Used
Not Yet Used
1.3.4 Famous Sculptures
Not Applicable
Not Applicable
1.3.5 Pictographs
Not Used
Not Used
1.3.6 Petroglyphs
Not Used
Not Used
1.3.7 Figurines
Not Yet Used
Not Yet Used
1.4 Fossils
Absent
Present

Types of Gneiss and Chert

Some rocks according to their use or texture are classified into different types. Know more about Gneiss Texture and Chert Texture. Types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss. whereas the types of Chert are Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter.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. Gneiss and Chert were not used 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. Gneiss and Chert were not used for creating petroglyphs.