Geologists take Earth's inner temperature using erupted sea glass

Boston MA (SPX) Jul 30, 2021

If the Earth's oceans were drained completely, they would reveal a massive chain of undersea volcanoes snaking around the planet. This sprawling ocean ridge system is a product of overturning material in the Earth's interior, where boiling temperatures can melt and loft rocks up through the crust, splitting the sea floor and reshaping the planet's surface over hundreds of millions of years.