Trondhjemite and Andesite Types and Facts

Trondhjemite

Andesite

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1 Types

1.1 Types

Not Available

Icelandite

1.2 Features

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

Generally rough to touch, High silica content, Is one of the oldest rock

1.3 Archaeological Significance

1.3.1 Monuments

Not Yet Used

Used

1.3.2 Famous Monuments

Not Applicable

Middle of the Earth in Ecuador

1.3.3 Sculpture

Used

1.3.4 Famous Sculptures

Data Not Available

1.3.5 Pictographs

Not Used

1.3.6 Petroglyphs

Not Used

1.3.7 Figurines

Used

1.4 Fossils

Absent

Types of Trondhjemite and Andesite

Some rocks according to their use or texture are classified into different types. Know more about Trondhjemite Texture and Andesite Texture. Types of Trondhjemite are Not Available whereas the types of Andesite are Icelandite.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 Andesite 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. Trondhjemite and Andesite were not used for creating petroglyphs.