Tuff and Greywacke Types and Facts

Tuff

Greywacke

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

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

Always found as volcanic pipes over deep continental crust

Easter Island in the Polynesian Triangle, Pacific Ocean

Absent

Greywacke

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

Present

Types of Tuff and Greywacke

Some rocks according to their use or texture are classified into different types. Know more about Tuff Texture and Greywacke Texture. The types of Tuff and Greywacke are .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 Greywacke 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 Greywacke were for creating petroglyphs.