Researchers have confirmed that a 160-meter-wide asteroid slammed into the North Sea roughly 43 to 46 million years ago, creating the Silverpit Crater and unleashing a tsunami towering over 100 meters high. The discovery settles a decades-long scientific dispute regarding the origin of the buried seabed structure.
Researchers Find Shock-Wave Minerals Beneath the North Sea
Spanning roughly three kilometers across, the structure was first identified in 2002. Deep beneath 700 meters of seabed sediment in the North Sea, about 130 kilometers off the coast of England near Yorkshire, lies the Silverpit Crater.
For more than twenty years, its genesis was fiercely contested by researchers who argued that underground salt movement or volcanic collapse formed the basin rather than an extraterrestrial impact. The breakthrough came from combining newly available seismic images with microscopic evidence recovered from beneath the seabed.
That debate ended when a research team led by Dr. Uisdean Nicholson of Heriot-Watt University analyzed rock samples from a nearby oil well using advanced seismic imaging and microscopic examination.
The breakthrough arrived when scientists located tiny quartz and feldspar crystals bearing shock deformation features at the exact depth of the crater floor. High-resolution seismic surveying and microscopic analysis of rock from an oil well ultimately verified its extraterrestrial formation.
We were exceptionally lucky to find these — a real ‘needle-in-a-haystack’ effort.
Dr. Uisdean Nicholson, sedimentologist in Heriot-Watt University’s School of Energy, Geoscience, Infrastructure and Society, via Sciencedaily
Scientists Simulate the Ancient 1.5-Kilometer Debris Column
With the physical evidence secured, scientists built computer models to simulate the collision dynamics.
The calculations indicate that an asteroid measuring approximately 160 meters in diameter approached from the west and struck the seabed at a shallow angle. The velocity of the cosmic body generated immediate, cataclysmic displacement of water and rock.
A massive asteroid slammed into the North Sea and triggered a 330-foot tsunamiMany scientists believed Silverpit was created by a hypervelocity impact, the term used for collisions involving asteroids or ..Read More: https://t.co/xzXN9M9hZ5
Within minutes, the impact hurled a towering column of debris and water roughly 1.5 kilometers into the air. When that massive curtain collapsed back into the ocean, it produced a towering wave that surpassed 100 meters in height, an elevation comparable to a 30-story building.
The Silverpit Crater lies approximately 700 meters beneath the seabed in the North Sea, about 130 kilometers off the coast of Yorkshire, England.
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.
Dr. Uisdean Nicholson, Heriot-Watt University, via Sciencedaily
Researchers Vote on Alternative Theories in 2009
The controversy reached such a pitch that researchers even cast votes on alternative theories for Silverpit’s genesis during the year 2009.
Silverpit joins an exclusive inventory of Earth impact structures.
#FPExplained: The puzzle of the Silverpit Crater has finally been solved. It was formed by a 160-metre asteroid when it crashed into the North Sea, triggering a tsunami wave as high as the Big Ben.https://t.co/UezuY13vnZ
Because plate tectonics and erosion continuously reshape the planet, roughly 33 identified beneath the ocean. The exceptional preservation of the Silverpit structure gives researchers a rare window into how high-speed marine impacts alter planetary surfaces and interact with deep ocean basins.