Oil shale and Dacite Types and Facts
Types
Carbonate-rich Shale, Siliceous Shale and Cannel Shale
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite
Features
Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock
Host Rock for Lead, Is one of the oldest rock
Archaeological Significance
Monuments
Not Yet Used
Not Yet Used
Famous Monuments
Not Applicable
Not Applicable
Sculpture
Not Yet Used
Not Yet Used
Famous Sculptures
Not Applicable
Not Applicable
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Not Yet Used
Not Yet Used
Types of Oil shale and Dacite
Some rocks according to their use or texture are classified into different types. Know more about Oil shale Texture and Dacite Texture. Types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale whereas the types of Dacite are Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite.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 Dacite 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 Dacite was used to create petroglyphs.