Tuff and Gossan Types and Facts

Tuff

Gossan

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1 Types

1.1 Types

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

Translocated gossan and Leakage gossan

1.2 Features

Always found as volcanic pipes over deep continental crust

Clasts are smooth to touch, Easily splits into thin plates

1.3 Archaeological Significance

1.3.1 Monuments

Used

Not Yet Used

1.3.2 Famous Monuments

Easter Island in the Polynesian Triangle, Pacific Ocean

Not Applicable

1.3.3 Sculpture

Used

Not Yet Used

1.3.4 Famous Sculptures

Data Not Available

Not Applicable

1.3.5 Pictographs

Used

1.3.6 Petroglyphs

Used

1.3.7 Figurines

Used

Not Yet Used

1.4 Fossils

Absent

Types of Tuff and Gossan

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