Phonolite and Adakite Definition

Definition of Phonolite and Adakite

The general Phonolite and Adakite definition can be stated as: Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic. On the other hand, Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. Along with definition of Phonolite and Adakite, get to know about Properties of Phonolite and Adakite. Get to know more information about Phonolite and Adakite origin and discoverer, etymology and class.

History of Phonolite and Adakite

The history of Phonolite and Adakite gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Phonolite and Adakite Origin and Discoverer

Phonolite and Adakite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Phonolite and Adakite. In this section, you will know about Phonolite and Adakite Origin and Discoverer. Origin of Phonolite is Unknown whereas Origin of Adakite is Adak, Aleutian Islands. It is interesting to know the name of Phonolite and Adakite discoverer. The Discoverer of Phonolite is Unknown and the discoverer of Adakite is Defant and Drummond.

Etymology of Phonolite and Adakite

Along with Phonolite and Adakite definition, know more about the etymology of Phonolite and Adakite. Etymology of Phonolite and Adakite gives information about origin and formation of a particular rock. Know more about Formation of Phonolite and Formation of Adakite. The etymology of Phonolite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit while that of Adakite is From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Phonolite and Adakite belong to Igneous Rocks. The sub-class, group and other categories of Phonolite and Adakite are listed below.

For Phonolite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Not applicable
• Other Categories: Fine grained rock and Opaque rock

For Adakite,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Fine grained rock, Medium grained rock and Opaque rock