Chert and Migmatite Types and Facts

Chert

Migmatite

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1 Types

1.1 Types

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

Diatexites and Metatexites

1.2 Features

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

Generally rough to touch, Is one of the oldest rock

1.3 Archaeological Significance

1.3.1 Monuments

Used

Not Yet Used

1.3.2 Famous Monuments

Data Not Available

Not Applicable

1.3.3 Sculpture

Not Yet Used

1.3.4 Famous Sculptures

Not Applicable

1.3.5 Pictographs

Not Used

Used

1.3.6 Petroglyphs

Not Used

Used

1.3.7 Figurines

Not Yet Used

1.4 Fossils

Present

Absent

Types of Chert and Migmatite

Some rocks according to their use or texture are classified into different types. Know more about Chert Texture and Migmatite Texture. Types of Chert are Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter whereas the types of Migmatite are Diatexites and Metatexites.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 was not used to create pictographs whereas Migmatite is used to create 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 was not used to create petroglyphs whereas Migmatite was used to create petroglyphs.