Large magma reservoir discovered beneath Long Valley supervolcano

Large magma reservoir discovered beneath Long Valley supervolcano

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Science, Geography, Biology

11th Grade - University

Hard

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The Long Valley supervolcano erupted 760,000 years ago, forming a massive caldera. Since 1978, uplift in the caldera center suggests magma inflow. Seismic tomography by USGS researchers revealed a detailed view of the subsurface, showing a reservoir with 240 cubic miles of semi-molten magma, 27% of which is liquid.

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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What has been observed in the caldera center since 1978?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How much semi-molten magma is contained beneath the supervolcano?

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