Hyaloclastite and Porphyry Types and Facts
Types
Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff.
Rhomb Porphyry
Features
Always found as volcanic pipes over deep continental crust
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny
Archaeological Significance
Famous Monuments
Data Not Available
Data Not Available
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Used
Not Used
Petroglyphs
Used
Not Used
Types of Hyaloclastite and Porphyry
Some rocks according to their use or texture are classified into different types. Know more about Hyaloclastite Texture and Porphyry Texture. Types of Hyaloclastite are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff. whereas the types of Porphyry are Rhomb Porphyry.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. Hyaloclastite was used to create pictographs whereas Porphyry 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. Hyaloclastite was used to create petroglyphs whereas Porphyry was not used to create petroglyphs.