Argillite and Siltstone Types and Facts

Argillite

Siltstone

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Types

Not Available

Features

Is one of the oldest rock

Available in Lots of Colors and Patterns, Easily splits into thin plates, Generally rough to touch, High silica content, Very fine grained rock

Archaeological Significance

Monuments

Used

Not Yet Used

Famous Monuments

Not Available

Not Applicable

Sculpture

Used

Famous Sculptures

Not Available

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Used

Fossils

Present

Types of Argillite and Siltstone

Some rocks according to their use or texture are classified into different types. Know more about Argillite Texture and Siltstone Texture. The types of Argillite and Siltstone are Not Available.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. Argillite was used to create pictographs whereas Siltstone is not 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. Argillite was used to create petroglyphs whereas Siltstone was not used to create petroglyphs.