Shale and Hornblendite Types and Facts

Shale

Hornblendite

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1 Types

1.1 Types

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale

Hornblende Gabbro and Hornblende Peridotite

1.2 Features

Easily splits into thin plates, Generally rough to touch, Very fine grained rock

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny

1.3 Archaeological Significance

1.3.1 Monuments

Used

Not Yet Used

1.3.2 Famous Monuments

Jantar Mantar in India

Not Applicable

1.3.3 Sculpture

Used

1.3.4 Famous Sculptures

Data Not Available

1.3.5 Pictographs

Used

Not Used

1.3.6 Petroglyphs

Used

Not Used

1.3.7 Figurines

Used

1.4 Fossils

Present

Absent

Types of Shale and Hornblendite

Some rocks according to their use or texture are classified into different types. Know more about Shale Texture and Hornblendite Texture. Types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale whereas the types of Hornblendite are Hornblende Gabbro and Hornblende Peridotite.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. Shale was used to create pictographs whereas Hornblendite is not 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. Shale was used to create petroglyphs whereas Hornblendite was not used to create petroglyphs.