Category Archives: volcanoes

A new recipe for Large Igneous Provinces: just add BIF, then wait a couple of hundred million years

Here’s a new paper that proposes the biggest of big ideas: a 240 million year causal chain that runs from the Earth’s surface, to the core mantle boundary, and back again! Here’s how it supposedly goes: 1. Banded iron deposits … Continue reading

Categories: deep time, geology, past worlds, volcanoes

A volcano erupted on Venus in the 1990s!

Exciting news that there was a volcanic eruption on Venus in the early 1990s, shown by changes in the size of crater between two passes of the Magellan probe‘s radar over the same area. There have been hints of volcanic … Continue reading

Categories: planets, volcanoes

Can we detect plate tectonics on exoplanets?

As celebrated in this Ars Technica piece, the 2010s was ‘the decade of the exoplanet’. Largely thanks to the Kepler telescope, the past ten years has seen an explosion in exoplanet discoveries. More than 4000 planets have now been identified orbiting other stars, … Continue reading

Categories: geology, planets, tectonics, volcanoes

New sonar data from around Anak Kratatau constrain size of December 2018 collapse

BBC story here. These data indicate a smaller collapse, but also a shallower failure plane than expected, which allowed that smaller volume to still generate a devastating tsunami. Basically, when modelling this, different combinations of slide volume and failure angle … Continue reading

Categories: geohazards, geophysics, volcanoes

Magma making earthquakes on Hawaii

Volcanic happenings are afoot on the Big Island of Hawaii. To be clear, Kilauea has been erupting continuously since 1983, but activity has waxed and waned. The last few weeks have definitely seen an uptick in unrest, with inflation and … Continue reading

Categories: earthquakes, geohazards, volcanoes