Tuff and Scoria Types and Facts

Tuff

Scoria

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Types

Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite.

Basaltic Scoria and Andesitic Scoria

Features

Always found as volcanic pipes over deep continental crust

Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny

Archaeological Significance

Monuments

Famous Monuments

Easter Island in the Polynesian Triangle, Pacific Ocean

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Types of Tuff and Scoria

Some rocks according to their use or texture are classified into different types. Know more about Tuff Texture and Scoria Texture. Types of Tuff are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite. whereas the types of Scoria are Basaltic Scoria and Andesitic Scoria.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 Scoria 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 Scoria were for creating petroglyphs.