Gneiss and Trondhjemite Types and Facts

Gneiss

Trondhjemite

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1 Types

1.1 Types

Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.

Not Available

1.2 Features

Generally rough to touch, Is one of the oldest rock

Is one of the oldest rock, Typically speckled black and white.

1.3 Archaeological Significance

1.3.1 Monuments

Used

Not Yet Used

1.3.2 Famous Monuments

Konark Sun Temple in India, Washington Monument, US

Not Applicable

1.3.3 Sculpture

Not Yet Used

Used

1.3.4 Famous Sculptures

Not Applicable

Data Not Available

1.3.5 Pictographs

Not Used

1.3.6 Petroglyphs

Not Used

1.3.7 Figurines

Not Yet Used

Used

1.4 Fossils

Absent

Types of Gneiss and Trondhjemite

Some rocks according to their use or texture are classified into different types. Know more about Gneiss Texture and Trondhjemite Texture. Types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss. whereas the types of Trondhjemite are Not Available.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. Gneiss and Trondhjemite 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. Gneiss and Trondhjemite were not used for creating petroglyphs.