Suevite and Tonalite Types and Facts

Types of Suevite and Tonalite

Some rocks according to their use or texture are classified into different types. Know more about Suevite Texture and Tonalite Texture. Types of Suevite are Phyllosilicates, Calcite 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. Suevite was used to create pictographs whereas Tonalite 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. Suevite was used to create petroglyphs whereas Tonalite was not used to create petroglyphs.