Oil shale and Tuff Types and Facts

Oil shale

Tuff

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1 Types

1.1 Types

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

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

1.2 Features

Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock

Always found as volcanic pipes over deep continental crust

1.3 Archaeological Significance

1.3.1 Monuments

Not Yet Used

Used

1.3.2 Famous Monuments

Not Applicable

Easter Island in the Polynesian Triangle, Pacific Ocean

1.3.3 Sculpture

Not Yet Used

Used

1.3.4 Famous Sculptures

Not Applicable

Data Not Available

1.3.5 Pictographs

Not Used

Used

1.3.6 Petroglyphs

Not Used

Used

1.3.7 Figurines

Not Yet Used

Used

1.4 Fossils

Present

Absent

Types of Oil shale and Tuff

Some rocks according to their use or texture are classified into different types. Know more about Oil shale Texture and Tuff Texture. Types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale whereas the types of Tuff are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite..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. Oil shale was not used to create pictographs whereas Tuff is used to create 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. Oil shale was not used to create petroglyphs whereas Tuff was used to create petroglyphs.