Porphyry and Tonalite Types and Facts
Types
Rhomb Porphyry
Dacite
Features
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny
Is one of the oldest rock, Typically speckled black and white.
Archaeological Significance
Monuments
Used
Not Yet Used
Famous Monuments
Data Not Available
Not Applicable
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Not Used
Not Used
Petroglyphs
Not Used
Not Used
Types of Porphyry and Tonalite
Some rocks according to their use or texture are classified into different types. Know more about Porphyry Texture and Tonalite Texture. Types of Porphyry are Rhomb Porphyry whereas the types of Tonalite are 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. Porphyry and Tonalite 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. Porphyry and Tonalite were not used for creating petroglyphs.