Obsidian and Marble Definition

Definition of Obsidian and Marble

The general Obsidian and Marble definition can be stated as: Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. On the other hand, Marble is a non-foliated metamorphic rock which is composed of recrystallized carbonate which is formed when limestone is exposed to high temperatures and pressures over a long time. Along with definition of Obsidian and Marble, get to know about Properties of Obsidian and Marble. Get to know more information about Obsidian and Marble origin and discoverer, etymology and class.

History of Obsidian and Marble

The history of Obsidian and Marble 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.

Obsidian and Marble Origin and Discoverer

Obsidian and Marble definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Obsidian and Marble. In this section, you will know about Obsidian and Marble Origin and Discoverer. Origin of Obsidian is Ethiopia whereas Origin of Marble is Egypt. It is interesting to know the name of Obsidian and Marble discoverer. The Discoverer of Obsidian is Obsius and the discoverer of Marble is Unknown.

Etymology of Obsidian and Marble

Along with Obsidian and Marble definition, know more about the etymology of Obsidian and Marble. Etymology of Obsidian and Marble gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Marble. The etymology of Obsidian is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius while that of Marble is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian belongs to Igneous Rocks while Marble belongs to Metamorphic Rocks. The sub-class, group and other categories of Obsidian and Marble are listed below.

For Obsidian,

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

For Marble,

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