The long-running question over whether an asteroid hit north sea tsunami was produced by the buried Silverpit structure has been settled by new research led by Dr. Uisdean Nicholson of Heriot-Watt University. The team finds the three-kilometre Silverpit crater, about 700 metres below the seabed roughly 80 miles off Yorkshire, formed when a roughly 160-metre-wide asteroid struck at a shallow angle from the west around 43 to 46 million years ago. Seismic imaging, microscopic analysis of rock fragments recovered from an oil well and computer modelling all point to impact origins that blasted up a mega‑tsunami across the ancient North Sea.
Asteroid Hit North Sea Tsunami: New Evidence
The new study, published in the journal Nature Communications and supported by the Natural Environment Research Council, presents multiple lines of evidence tying Silverpit to an extraterrestrial strike. Dr. Uisdean Nicholson, a sedimentologist in Heriot-Watt University’s School of Energy, Geoscience, Infrastructure and Society, said: “New seismic imaging has given us an unprecedented look at the crater. ” Team samples recovered from the depth of the crater floor contained rare “shocked” quartz and feldspar crystals, microscopic minerals that form only under the extreme pressures generated during asteroid impacts.
What the Data Shows
The structural data describe a three-kilometre-wide crater ringed by concentric faults spanning roughly 20 kilometres, buried about 700 metres beneath the seabed and situated approximately 80 miles off the Yorkshire coast. Models assembled by the research team indicate a 160-metre-wide object struck from the west at a shallow angle, blasting a 1. 5-kilometre-high curtain of seawater and shattered rock and then collapsing to hurl a colossal tsunami across the region. Those simulations produce a wave more than 100 metres (330 feet) high — a prehistoric surge that would have overwhelmed coastlines in the ancient North Sea basin.
Immediate Reactions and What’s Next
Dr. Uisdean Nicholson said: “We were exceptionally lucky to find these — a real ‘needle-in-a-haystack’ effort. These prove the impact crater hypothesis beyond doubt, because they have a fabric that can only be created by extreme shock pressures. ” Professor Gareth Collins of Imperial College London, who contributed simulations and attended earlier scientific debate, called the new evidence “the silver bullet” that ends the row and opens the door to fresh analysis of subsurface impact processes. The overturning of the earlier consensus — reached by many geologists in meetings a decade ago who favoured non-impact explanations such as salt movement or collapse — now directs attention to how rare marine impacts shape seabed architecture and regional tsunami risk in Earth history.
Researchers will now apply the unprecedented seismic images, shocked‑mineral data and computer models to map how impacts modify sediments and faults beneath the sea and to refine estimates of tsunami propagation from such events. The record left by this impact will be used to probe how similar strikes could affect shallow marine basins, and to place the Silverpit event in its wider geological and planetary context as teams continue detailed analysis of the samples and simulations of the asteroid hit north sea tsunami.
