Invisible volcanic ash gives clues to Neanderthal demise

(Phys.org) -- Invisible to the human eye, cryptotephra is a fine volcanic glass that is blasted out of erupting volcanoes along with ash. It leaves behind a hidden layer, in the earth, which has now been detected, giving ...

Obsidian discovery reveals 4,000-year-old Syrian story

(Phys.org)—Ancient sites and cultural heritage are under threat in Syria due to the current conflict. An interdisciplinary research team hopes this new discovery, which has major implications for understanding the world's ...

Volcanoes deliver two flavors of water

Seawater circulation pumps hydrogen and boron into the oceanic plates that make up the seafloor, and some of this seawater remains trapped as the plates descend into the mantle at areas called subduction zones. By analyzing ...

Martian volcanic glass could be hotspot for life

Water may have played a role in forming plains of volcanic glass that spread across nearly a third of Mars. The discovery of this volcanic glass could steer scientists toward subglacial lakes where martian life could thrive.

New 10 second sourcing technology set to transform archaeology

Researchers at the University of Sheffield have developed a method of sourcing obsidian artefacts that takes only 10 seconds – dozens of times faster than the current methods – with a handheld instrument that can be used ...

Turning glass into clay

The magic mineral and microbial processes that transform volcanic glass into clay have been identified, adding important knowledge to how clay is formed.

Researchers unearth the truth about volcanic ash

(PhysOrg.com) -- The dispersal of large ash plumes from the Eyjafjallajökull eruption in Iceland has generated widespread interest due largely to the impact on air transport and reports of ash-fall throughout the British ...

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