Silica is a key component of sand but also of lava. The less there is, the more fluid the lava, and the faster it flows. Nyiragongo has some of the lowest-silica-content-lava on the planet, but ...
Residents in parts of Hawaii are being warned that lava may cross a highway in the coming hours as a flow heads towards the ocean. The lava had mostly been spattering up since a fissure opened earlier ...
The Canary Islands Volcanology Institute (INVOLCAN) clocked the flows of molten rock at speeds of up to 10 metres per second. According to the agency, these are some of the fastest lava flows ...