Wehrlite and Shale Types and Facts
Types
Ultramafic rock
Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Features
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock
Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Archaeological Significance
Famous Monuments
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Jantar Mantar in India
Types of Wehrlite and Shale
Some rocks according to their use or texture are classified into different types. Know more about Wehrlite Texture and Shale Texture. Types of Wehrlite are Ultramafic rock whereas the types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale.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. Wehrlite and Shale were 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. Wehrlite and Shale were for creating petroglyphs.