Location of anomalous seafloor as showed by the study. Credit: Byrnes et al., 2018, Science Advances
The meteorite the killed the dinosaurs triggered global-scale underwater volcanic activity - science

New evidence suggests that the Chicxulub meteorite, responsible for wiping out the dinosaur in the late Cretaceous, induced high underwater volcanic activity. Following the impact, volcanic ridges lying on the edge of tectonic plates became active. This was the result of large seismic waves that were strong enough to push magma out of the mantle into the ocean volcanoes. This adds to the series of cataclysmic events that finally contributed to the extinction of three-quarters of species of Earth, including the mighty dinosaurs.

Read the full story: smithsonianmag.com
Scientific publication: Science Advances