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

Research Article| March 01, 2006 Central ring structure identified in one of the world's best-preserved impact craters A.C. Gebhardt; A.C. Gebhardt 1Alfred Wegener Institute for Polar and Marine Research, Columbusstraße, 27568 Bremerhaven, Germany Search for other works by this author on: GSW Google Scholar F. Niessen; F. Niessen 1Alfred Wegener Institute for Polar and Marine Research, Columbusstraße, 27568 Bremerhaven, Germany Search for other works by this author on: GSW Google Scholar C. Kopsch C. Kopsch 2Alfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information A.C. Gebhardt 1Alfred Wegener Institute for Polar and Marine Research, Columbusstraße, 27568 Bremerhaven, Germany F. Niessen 1Alfred Wegener Institute for Polar and Marine Research, Columbusstraße, 27568 Bremerhaven, Germany C. Kopsch 2Alfred Wegener Institute for Polar and Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany Publisher: Geological Society of America Received: 26 Sep 2005 Revision Received: 01 Nov 2005 Accepted: 07 Nov 2005 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (3): 145–148. https://doi.org/10.1130/G22278.1 Article history Received: 26 Sep 2005 Revision Received: 01 Nov 2005 Accepted: 07 Nov 2005 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation A.C. Gebhardt, F. Niessen, C. Kopsch; Central ring structure identified in one of the world's best-preserved impact craters. Geology 2006;; 34 (3): 145–148. doi: https://doi.org/10.1130/G22278.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract 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. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.