Anorthosite and Oil shale Types and Facts

Anorthosite

Oil shale

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1 Types

1.1 Types

Proterozoic Anorthosite and Archean Anorthosite

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

1.2 Features

Generally rough to touch, Is one of the oldest rock

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

1.3 Archaeological Significance

1.3.1 Monuments

Not Yet Used

1.3.2 Famous Monuments

Not Applicable

1.3.3 Sculpture

Used

Not Yet Used

1.3.4 Famous Sculptures

Not Applicable

1.3.5 Pictographs

Not Used

1.3.6 Petroglyphs

Not Used

1.3.7 Figurines

Used

Not Yet Used

1.4 Fossils

Absent

Present

Types of Anorthosite and Oil shale

Some rocks according to their use or texture are classified into different types. Know more about Anorthosite Texture and Oil shale Texture. Types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite 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. Anorthosite and Oil shale were not used 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. Anorthosite and Oil shale were not used for creating petroglyphs.