Tuff and Oolite Types and Facts
Types
Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite.
Pisolitic Oolite and Oncolitic Oolite
Features
Always found as volcanic pipes over deep continental crust
Available in lots of colors, Generally rough to touch, Very fine grained rock
Archaeological Significance
Famous Monuments
Easter Island in the Polynesian Triangle, Pacific Ocean
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Types of Tuff and Oolite
Some rocks according to their use or texture are classified into different types. Know more about Tuff Texture and Oolite Texture. Types of Tuff are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite. whereas the types of Oolite are Pisolitic Oolite and Oncolitic Oolite.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. Tuff and Oolite 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. Tuff and Oolite were for creating petroglyphs.