Magmais a mixture of molten rock, dissolved gases, and solid mineral crystals. It originates deep within the Earth’s mantle or rust and can rise to the surface, where it erupts as lava or solidifies underground to formigneous rocks. The composition and behavior of magma depend on its sou...
Diamonds are made up of billions of carbon atoms and most were formed between one to three billion years ago, deep below the earth's surface under intense heat and high pressure. Older than humankind itself, diamonds are one of nature’s most incredible and unique gifts. Much like a snow...
Most pieces of agate do not have "eyes," so stones that do have them are especially prized by collectors. Natural glasses: Obsidian is a natural glass formed during an eruption of silica-rich magma. Shown here are Apache tears, mahogany obsidian, and snowflake obsidian. Minerals Amazonite (...
Diamonds are carried upwards through vertical conduits of volcanic rock known as kimberlite and lamproite pipes. These pipes act as conduits for magma that originates deep within the mantle. Kimberlite magma, rich in volatile gases like CO₂ and H₂O, ascends at rapid speeds (20–30 kilome...
magma within the earth’s crust. The intrusion of large bodies of granite—batholiths—is usually part of the origin of a mountain range. Similarly, a fine-grained, mafic igneous rock is not only a basalt, it is an extrusive igneous rock that formed from rapid cooling and crystallization ...
Fossils can also be found in metamorphic rock, or rock that has been altered by heat or pressure. Rarely are fossils found in igneous rock, which is formed when magma flows and hardens. The five most often cited types of fossils are mold, cast, imprint, permineralization and trace fossils...
Mountain Building | Process, Types & Formation from Chapter 12 / Lesson 4 95K Learn about mountain building and understand how mountains are formed. Explore different types of mountains, their formations, and their characteristics. Related to this QuestionWhat...
Our Planet Scientists Found New Microbes in Earth’s ‘Skin’ This Ancient Larva Still Has Its Brain And Guts An Enormous Desert Used to Be a 138-Foot-Deep Lake The Core of North America Is ‘Dripping' Away This “Battery In a Rock” Changes the Energy Game ...
Magma | Definition & Formation from Chapter 7 / Lesson 1 218K In this lesson, learn the magma definition, where magma comes from, how magma is formed, the mineral composition of magma, and whether magma is a liquid. Related to this QuestionWhat...
Diamonds are most often found in kimberlite pipes, carrot-shaped, volcanic rock formations. Diamonds started out as carbon that crystallized deep in the earth under great pressure and temperature. Volcanic activity brought the diamonds to the Earth’s surface in kimberlite magma. Erosion of kimberlite...