Chalk and Basanite Types and Facts
Types
Chalk Marl and Marl
Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite
Features
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate, Used as a touchstone
Archaeological Significance
Types of Chalk and Basanite
Some rocks according to their use or texture are classified into different types. Know more about Chalk Texture and Basanite Texture. Types of Chalk are Chalk Marl and Marl whereas the types of Basanite are Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite.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. Chalk and Basanite were 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. Chalk and Basanite were for creating petroglyphs.