Central ring structure identified in one of the world's best-preserved impact craters

A. C. Gebhardt, F. Niessen, C. Kopsch

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


Seismic refraction and reflection data were acquired in 2000 and 2003 to study the morphology and sedimentary fill of the remote El'gygytgyn crater (Chukotka, northeastern Siberia; diameter 18 km). These data allow a first insight into the deeper structure of this unique impact crater. Wide-angle data from sonobuoys reveal a five-layer model: a water layer, two lacustrine sedimentary units that fill a bowl-shaped apparent crater morphology consisting of an upper layer of fallback breccia with P-wave velocities of ∼3000 m/s, and a lower layer of brecciated bedrock (velocities >3600 m/s). The lowermost layer shows a distinct anticline structure that, by analogy with other terrestrial and lunar craters of similar size, can be interpreted as a central ring structure. The El'gygytgyn crater exhibits a well-expressed morphology that is typical of craters formed in crystalline target rocks.

Original languageEnglish (US)
Pages (from-to)145-148
Number of pages4
Issue number3
StatePublished - Mar 2006

Bibliographical note

Copyright 2013 Elsevier B.V., All rights reserved.


  • El'gygytgyn
  • Impact crater
  • Lakes
  • Seismic reflection
  • Seismic refraction


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