Oil shale and Greywacke Types and Facts

Oil shale

Greywacke

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Types

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

Not Available

Features

Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock

Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Not Yet Used

Used

Famous Sculptures

Not Applicable

Not Available

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Not Yet Used

Used

Fossils

Present

Types of Oil shale and Greywacke

Some rocks according to their use or texture are classified into different types. Know more about Oil shale Texture and Greywacke Texture. Types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale whereas the types of Greywacke 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. Oil shale and Greywacke 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. Oil shale and Greywacke were not used for creating petroglyphs.