description Neugrund Overview
Neugrund is a submarine meteorite impact structure in the Baltic Sea near Estonia. The crater is about 20 kilometers in diameter and formed roughly 535 million years ago, during the Cambrian period. Because it lies beneath the sea and is covered by later geological material, the structure is studied mainly through geological and geophysical evidence rather than as an exposed landform. It is relevant to research on impact events, Baltic geology, and the early geological history of the region.
help Neugrund FAQ
How big and how old is the Neugrund crater?
Neugrund is about 20 kilometers in diameter and formed roughly 535 million years ago during the Cambrian period. That makes it one of the oldest known impact structures on Earth.
Where exactly is the Neugrund crater?
It lies beneath the Baltic Sea near the coast of Estonia, close to the island of Osmussaar. Because it is submarine and buried under later sediments, it cannot be seen directly from the surface.
Is there any visible evidence of the Neugrund impact on land?
Impact breccia believed to come from the Neugrund structure is reportedly found as glacially transported boulders on nearby Osmussaar island. These rocks give geologists surface samples of the buried crater.
Why is the Neugrund crater hard to study?
It lies on the seafloor and is covered by younger geological material, so direct sampling is difficult. Researchers rely mainly on geophysical methods and erratic boulders on the Estonian coast to reconstruct the roughly 535-million-year-old impact.
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