Andesite and Hyaloclastite Types and Facts

Andesite

Hyaloclastite

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1 Types

1.1 Types

Icelandite

Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff.

1.2 Features

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

Always found as volcanic pipes over deep continental crust

1.3 Archaeological Significance

1.3.1 Monuments

Used

1.3.2 Famous Monuments

Middle of the Earth in Ecuador

Data Not Available

1.3.3 Sculpture

Used

1.3.4 Famous Sculptures

Data Not Available

1.3.5 Pictographs

Not Used

Used

1.3.6 Petroglyphs

Not Used

Used

1.3.7 Figurines

Used

1.4 Fossils

Absent

Types of Andesite and Hyaloclastite

Some rocks according to their use or texture are classified into different types. Know more about Andesite Texture and Hyaloclastite Texture. Types of Andesite are Icelandite whereas the types of Hyaloclastite are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff and Andesitic tuff..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. Andesite was not used to create pictographs whereas Hyaloclastite is 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. Andesite was not used to create petroglyphs whereas Hyaloclastite was used to create petroglyphs.