Fluid inclusions in volcanoes are dominantly composed of carbon dioxide. At magmatic temperatures — 2,192 degrees — the density of the carbon dioxide strongly depends on pressure, which is influenced ...

This map shows the tephra fall associated with episode 41 of Kilauea's episodic summit eruption, on Jan. 24. Tephra is a generic word for any material erupted by a volcano that travels through the air ...

Volcanic rocks are igneous rocks that solidify from lava or pyroclastic material at or near Earth’s surface, and they are central topics in petrology, volcanology, and tectonics. They are typically ...

Follow along as we outline the journey of one of our volcanic samples used for geochemical analysis and the information we glean at each step. If it is a lava flow, is it ‘a‘a or pahoehoe? Is the ...

One house has gained a unique feature after a volcano erupted and spilled lava inside. Edosa Osemwegie, 25, a residential counselor from Boston, recorded a video of the house while on vacation in Cha ...

Above Wenatchee, spires reveal volcanic history in 44-million-year-old rock. High above the city of Wenatchee, Washington, a group of spires made of a unique type of 44-million-year-old rock tell the ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. With its greenish-brownish color, Erg Chech 002 (EC 002) might ...

The first samples from the farside of the moon contain signs of surprising volcanic activity near the lunar south pole. Two separate analyses of lunar rocks brought to Earth by China’s Chang’e-6 ...

When referred to as a gas, it means a volatile has transitioned into the vapor phase. The most common gases (or vapor phase volatiles) emitted at the surface are water (H2O), carbon dioxide (CO2), and ...