Shale and Hornblendite Types and Facts

Shale

Hornblendite

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

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

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

Jantar Mantar in India

Present

Hornblende Gabbro and Hornblende Peridotite

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

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. The types of Shale and Hornblendite 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. Shale and Hornblendite 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. Shale and Hornblendite were for creating petroglyphs.