 | | Journal (article/letter/editorial) | | online at http://www.uarkedu/meteor I..-l.-. Boltysh, another end-Cretaceous impact SIMON P. KELLEY...Sciences, National Academy of Ukraine, 55-b Gontchar Str., Kiev, Ukraine *Correspondence author's e-mail...currently accepted age of the 24 km diameter Boltysh crater, a K-Ar whole-rock age, places it in the Coniacian...the K/T boundary for this crater. Crucially, although the ages of Boltysh and Chixculub are within errors...a suitable crater saw several terrestrial craters fall under suspicion. The Manson crater in the USA |  | | Journal (article/letter/editorial) | | minerals in impact melt rocks of the Boltysh structure, Ukraine E. P. GUROV*, S. B. SHEKHUNOVA, and V...National Academy of Sciences of Ukraine, Gontchara Str., 55b, Kiev, Ukraine * Corresponding author. E-mail:...opaque minerals from the impact melt rocks of the Boltysh structure, in the central part of the Ukrainian...the basement granites of the Boltysh structure. INTRODUCTION The Boltysh impact structure, a circular...Golubev et al. 1974; Yurk et al. 1975) (Fig. 1). The crater was formed 65.82 0.74 Ma ago and was identified |  | | Journal (article/letter/editorial) | | has been unambiguously identified as the source crater. Recently, dark streaks present in rare LDG fragments...formed under high ambient pressure, e.g., in a hypersthene-cordieritebiotite granulite (Devaraju and Sadashivaiah...various impact melt breccias, e.g., from the Boltysh crater (Grieve et al. 1987), the Ries (Engelhardt...Popigai (Kerschhofer et al. 2000), and the Roter Kamm crater (Hecht et al. 2008). Finally, low-Ca, Al-rich orthopyroxene...Libyan Desert Glass Source Material As no impact crater unambiguously related to the Libyan Desert Glass |  | | Journal (article/letter/editorial) | | IMPACT DIAMONDS IN GLASS FROM OTTING QUARRY, RIES CRATER, GERMANY. J. 1. Abbott, R. M. Hough, 1. Gilmore...base of the Otting Quarry, Ries, Germany. The Ries Crater is a 25-km-diameter, l6-m.y.-old structure formed...shallow-level impact-derived deposits makes the crater the ideal site for a detailed investigation of...acid-demineralized residues of impact melt rocks from the Ries Crater revealed the presense of impact diamonds, closely...by the impact responsible for the Chesapeake Bay Crater in southeastern Virginia [ 1-31. In this investigation |  | | Book | | structures 7.7.2. Thermal evolution of the Ries impact crater 7.7.3. Tektites Sea-Floor Spreading Archaeological...at., 1973; Komarov and Raichlin, 1976), impact crater glasses (Gentner et at., 1969b; Gentner and Wagner...(Section 5.5.1). An example is the Ries meteorite crater, where apatite and sphene fission-track ages of...core penetrating the crystalline floor of the Ries crater (Miller and Wagner, 1979). Depending on the degree...reveals information on the age and mechanism of crater formation (Section 7.7). Another example of an |
|
