Earth's Interior

Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron outer core, which helps create Earth's protective magnetic field. The layers can also be categorized into the rigid outer lithosphere (which includes the crust and top portion of the mantle and makes up Earth's tectonic plates) and the athenosphere, the portion of the mantle that is solid, but made up of hot, weak, flowing rock. Read about the latest research on Earth's layers below.
Read More

Latest Articles

Quickly Rising Antarctica Suggests 'Runny' Earth
Antarctica
May 16th, 2014
Antarctica is rising much faster than expected, revealing that the hot rock of the mantle hundreds of miles below the icy continent is flowing much faster than expected, and so rebounding quickly to the loss of glacial ice, researchers say.
Read More »
Early Earth's Crust Was a Drippy, Hot Mess
The processes of the Earth's mantle
January 7th, 2014
Chunks of the thick crust that covered the early Earth may have dripped down into the mantle layer below, shedding light on how the Earth's interior behaved early in Earth's history.
Read More »
Buried 'Soda Fizz' May Solve Mystery of Coasting Tectonic Plates
Plate tectonics
April 30th, 2014
New findings could help explain the motion of the giant tectonic plates that surf over Earth's mantle, the movements of which explain how the continents have drifted over time as well as disasters such as earthquakes and volcanic eruptions.
Read More »
Rare Diamond Reveals Earth's Interior is All Wet
ringwoodite diamond
March 12th, 2014
A battered diamond that survived a trip from "hell" confirms a long-held theory: Earth's mantle holds an ocean's worth of water.
Read More »
Sparkling Discovery: Antarctica May Contain Diamonds
Diamonds
December 18th, 2013
A type of rock that often contains diamonds has been found in Antarctica — suggesting the shiny gems could also be found there — but diamond mining in the southernmost continent is impractical.
Read More »
Deadly New Zealand Earthquakes Weakened Earth's Crust
November 25th, 2013
The earthquakes that struck New Zealand's South Island in 2010 and 2011, the second of which killed scores of people, weakened the crust around the ruptured fault.
Read More »
Missing Xenon Gas Found in Earth's Core
An illustration of Earth's layers, including the crust, mantle and core.
April 21st, 2014
Mysteriously, most of the expected levels of xenon are missing from Earth's atmosphere. Now, researchers might have the answer: The noble gas, which usually doesn't bond with other atoms, may chemically react with iron and nickel in Earth's core.
Read More »
Tiny Crystal Defects Help Drive Plate Tectonics
Olivine deformation
February 27th, 2014
Researchers recently discovered a new crystal defect in olivine that helps explain how the mantle drives plate tectonics.
Read More »
Floating Seismic Devices Peer Deep Beneath Ocean Floor
A mermaid sensor is launched in the Indian Ocean
December 10th, 2013
Floating seismic stations that can dive more than a mile beneath the ocean's surface could help reveal the processes that govern deep Earthquakes and other mysterious processes in the planet's mantle.
Read More »