A 20-km-diameter multi-ringed impact structure in the North Sea

  title={A 20-km-diameter multi-ringed impact structure in the North Sea},
  author={S. A. Stewart and Philip J. Allen},
Most craters found on Earth are highly eroded, poorly preserved and only exposed on land. Here we describe a multi-ringed impact structure discovered in the North Sea from the analysis of three-dimensional seismic reflection data. The structure is 20 km in diameter, and has at least ten distinctive concentric rings located between 2 and 10 km from the crater centre. The structure affects Cretaceous chalk and Jurassic shales, and is well preserved below several hundred metres of post-impact… 

3D seismic reflection mapping of the Silverpit multi-ringed crater, North Sea

The first comprehensive mapping of the Silverpit multi-ringed crater is presented, based on five adjoining 3D seismic surveys that together provide 78% (216 km2) areal coverage of the structure with

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The Silverpit Crater consists of a set of concentric faults up to 20 km in diameter in the southern North Sea. Although formerly described as the first impact structure to be recognized in the UK,

Origin of the circular silverpit structure, UK North Sea : meteorite impact or salt withdrawal?

The origin of the Silverpit structure, UK North Sea has been contested since its discovery on seismic data in 2002. The Silverpit structure consists of a 3 4km central zone of deformation, which

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The structural depression previously attributed to meteor impact has an unusual but more mundane origin as one of a number of depressions created by the almost complete withdrawal of support at depth, rather than to extraterrestrial impact.

An Eocene age for the proposed Silverpit Impact Crater

Three-dimensional seismic analysis is used to describe the detailed morphology of the Silverpit crater, a proposed marine impact crater located in the southern North Sea, UK. We examine and constrain

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The Galileo Orbiter examined several impact features on Europa at considerably better resolution than was possible from Voyager. The new data allow us to describe the morphology and infer the geology

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Ancient Multiring Basins on the Moon Revealed by Clementine Laser Altimetry

Analysis of laser altimetry data from Clementine has confirmed and extended knowledge of nearly obliterated multiring basins on the moon, and several additional depressions seen in the data may represent previously unmapped ancient impact basins.

Extraterrestrial impacts on earth: the evidence and the consequences

  • R. Grieve
  • Geography, Geology
    Geological Society, London, Special Publications
  • 1998
Abstract The terrestrial record of impact events is incomplete and evolving. There are inherent biases in ages, distribution and sizes of known impact events that result from the high levels of

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Small-scale sand-silicone simulations of multiring impact structures have been undertaken in order to understand the effects of the rheology of the lithosphere on the variability of natural multiring

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Shortly after the excavation of a large impact crater the transient cavity collapses, driven by gravity. We show that at least one concentric fault scarp forms about the crater if the strength of the

Distinction between detrital and volcanogenic clay-rich beds in Turonian–Coniacian chalks of eastern England

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