Chert and Anorthosite Types and Facts

Chert

Anorthosite

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1 Types

1.1 Types

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

Proterozoic Anorthosite and Archean Anorthosite

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

Used

1.3.4 Famous Sculptures

Not Applicable

1.3.5 Pictographs

Not Used

1.3.6 Petroglyphs

Not Used

1.3.7 Figurines

Not Yet Used

Used

1.4 Fossils

Present

Absent

Types of Chert and Anorthosite

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