Ejecta of the Boltysh Impact Crater in the Ukrainian Shield
作者： Eugene P. Gurov , Simon P. Kelley , Christian Koeberl
DOI: 10.1007/978-3-642-55463-6_8
关键词: Breccia 、 Ejecta blanket 、 Fission track dating 、 Impact crater 、 Impact structure 、 Geology 、 Geochemistry 、 Shield 、 Ejecta 、 Geomorphology
摘要: The Boltysh crater is an about 24-km-diameter complex impact structure, which situated in the central part of Ukrainian Shield. surrounded by ejecta blanket represented a polymict breccia layer that preserved over area ~6500 km2. later fall-back or suevite are only overlying impact-melt sheet. outside extensively eroded and varies thickness from tens meters at distance 2-3 radii to 1-4 4-5 center structure. farthest recorded ca. 66 km 5.5 W-N-W Fall-back event include layer, now occurs within rim, where it overlies melt sheet top uplift crater. few up 97 m eastern
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