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Hornfels and Oil shale Types and Facts


Oil shale and Hornfels Types and Facts


Types

Types
Biotite hornfels   
Carbonate-rich Shale, Siliceous Shale and Cannel Shale   

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

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Not Yet Used   
Not Yet Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Not Yet Used   
Not Yet Used   

Fossils
Absent   
Present   

Formation >>
<< Uses

Types of Hornfels and Oil shale

Some rocks according to their use or texture are classified into different types. Know more about Hornfels Texture and Oil shale Texture. Types of Hornfels are Biotite hornfels whereas the types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale.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. Hornfels was used to create pictographs whereas Oil shale 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. Hornfels was used to create petroglyphs whereas Oil shale was not used to create petroglyphs.

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