Researchers analyze ancient Mount Etna eruptions to show varied magma speeds

The short version

• A study led by Cornell University examined ancient eruptions at Mount Etna in Italy, discovering that magma pathways vary drastically.[ScienceDaily]
• During an eruption in 122 B.C., magma stalled near the surface for weeks, while an eruption 4,000 years ago ascended within hours.[ScienceDaily]
• Researchers identified higher concentrations of carbon dioxide as a key driver behind the rapid ascent of magma from deep underground.[ScienceDaily]

Key facts

• A study led by Cornell University revealed that magma pathways and eruption speeds vary significantly at Mount Etna.[ScienceDaily]
• The eruption in 122 B.C. involved magma rising from 22 km deep, stalling at 2 to 5 km depth for several weeks, and releasing gas before erupting.[ScienceDaily]
• The Fall Stratified eruption nearly 4,000 years ago saw magma ascend from 24 to 30 km deep within hours.[ScienceDaily]
• Rapid magma ascent during the Fall Stratified eruption was linked to elevated concentrations of carbon dioxide.[ScienceDaily]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.

• One Mount Etna eruption took weeks. Another happened in hoursScienceDaily - Science