Scientists Confirm Asteroid Impact Beneath the North Sea

Geologists have confirmed that an asteroid struck the seabed beneath the North Sea between 43 million and 46 million years ago, creating Silverpit Crater and triggering a tsunami more than 100 meters (330 feet) high. Research led by Heriot-Watt University in Edinburgh, published in Nature Communications on October 21, 2026, identifies physical evidence that resolves a scientific dispute lasting more than two decades.

The impact involved an asteroid approximately 160 meters wide that hit the seabed at a shallow angle from the west, according to researchers. The resulting collision excavated a crater roughly three kilometers across and generated a towering mixture of rock and water that rose approximately 1.5 kilometers into the air before collapsing into the sea.

Silverpit Crater lies about 700 meters beneath the seabed in the southern North Sea, approximately 80 miles off the coast of Yorkshire, England. A surrounding system of circular faults extends across an area about 20 kilometers wide, according to the study.

Scientists discovered the formation in 2002, but its origins remained disputed. Its circular shape, central peak and surrounding fractures suggested an impact, while alternative explanations proposed that underground salt movement or volcanic activity had deformed and collapsed the seabed.

The decisive evidence came from improved seismic imaging and microscopic examinations of rock cuttings recovered from an oil well near the crater. Researchers identified rare shocked quartz and feldspar crystals at the same depth as the crater floor, providing physical evidence of extreme pressure consistent with an asteroid impact.

Dr. Uisdean Nicholson, a sedimentologist at Heriot-Watt University's School of Energy, Geoscience, Infrastructure and Society, explained how the combined evidence strengthened the impact hypothesis.

"New seismic imaging has given us an unprecedented look at the crater. Samples from an oil well in the area also revealed rare 'shocked' quartz and feldspar crystals at the same depth as the crater floor. 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."

These microscopic mineral structures form when rocks experience immense pressure, such as the shock waves generated by a high-speed cosmic collision. Their discovery at the crater's depth provides evidence that ordinary geological processes alone cannot readily explain the formation.

Computer simulations enabled the research team to reconstruct the collision and estimate its effects. The models indicate that the asteroid approached from the west at a shallow angle, displacing large quantities of rock and seawater in a matter of minutes.

Nicholson described the modeled sequence of events and the resulting wave.

"Our evidence shows that a 160-meter-wide asteroid hit the seabed at a low angle from the west. Within minutes, it created a 1.5-kilometer-high curtain of rock and water that then collapsed into the sea, creating a tsunami over 100 meters high."

The estimated tsunami height comes from numerical modeling rather than direct observation. Researchers based their reconstruction on the crater's geological structure, seismic data and physical evidence preserved in underground rock samples.

The findings also settle a long-running disagreement among geologists. In 2009, researchers voted on competing explanations for Silverpit Crater, and most rejected the asteroid-impact theory, according to ScienceDaily's account of the research.

Confirming Silverpit as an impact crater adds another documented example to the relatively small number of confirmed asteroid impact structures on Earth. The discovery also provides geological evidence of the destructive effects that an asteroid can produce when it strikes a marine environment.