Trondhjemite and Basanite Types and Facts
Types
Intermediate intrusive rock
Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite
Features
Is one of the oldest rock, Typically speckled black and white.
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 Trondhjemite and Basanite
Some rocks according to their use or texture are classified into different types. Know more about Trondhjemite Texture and Basanite Texture. Types of Trondhjemite are Intermediate intrusive rock 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. Trondhjemite 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. Trondhjemite and Basanite were for creating petroglyphs.