 | French, Bevan M., Koeberl, Christian, Gilmour, Iain, Shirey, Steven B., Dons, Johannes A., Naterstad, Johan (1997) The Gardnos impact structure, Norway: Petrology and geochemistry of target rocks and impactites. Geochimica et Cosmochimica Acta, 61 (4) 873-904 doi:10.1016/s0016-7037(96)00382-1 | Journal (article/letter/editorial) | | OO PI1 SOO16-7037(96)00382-l The Gardnos impact structure, Norway: Petrology and geochemistry of target...Museum, University of Oslo, Sarsgt. 1, N-0562 Oslo, Norway (Received July 11, 1996; accepted in revised fom...fom November 5, 1996) Abstract-The Gardnos structure, Norway is an approximately circular area of anomalously...minor amphibolite and quartzite. The original recognition of Gardnos as a deeply eroded impact structure...shocked rocks (impactites). Deep erosion of the structure has erased the original rim, removed much of the |  | Lindgren, Paula, Hallis, Lydia, Hage, Fredrik S., Lee, Martin R., Parnell, John, Plan, Anders, Doye, Alistair, MacLaren, Ian (2019) A TEM and EELS study of carbon in a melt fragment from the Gardnos impact structure. Meteoritics & Planetary Science, 54 (11) 2698-2709 doi:10.1111/maps.13381 | Journal (article/letter/editorial) | | of carbon in a melt fragment from the Gardnos impact structure Paula LINDGREN 1* , Lydia HALLIS 2,...Abstract–A carbon-rich melt fragment from the Gardnos impact structure has been studied for a better understanding...structural form(s) of carbon that have been processed by impact melting. The carbon was analyzed in situ in its...nanocrystalline grain size. The Gardnos carbon has a graphitic structure but with a large c/a ratio indicating...result of rapid heating to high temperatures during impact, followed by rapid cooling, with not enough time |  | Goderis, Steven, Kalleson, Elin, Tagle, Roald, Dypvik, Henning, Schmitt, Ralf-Thomas, Erzinger, Jörg, Claeys, Philippe (2009) A non-magmatic iron projectile for the Gardnos impact event. Chemical Geology, 258 (3) 145-156 doi:10.1016/j.chemgeo.2008.09.025 | Journal (article/letter/editorial) | | e o A non-magmatic iron projectile for the Gardnos impact event Steven Goderis a,b, Elin Kalleson c,...N-0316 Oslo, Norway d Department of Geosciences, University of Oslo, N-0316 Oslo, Norway e Department...September 2008 Editor: B. Bourdon Keywords: Gardnos Impact structure Platinum group elements Projectile identification...Precambrian Gardnos impact structure in Norway. Fifteen impactite samples, predominantly impact breccias...from the central and northeastern part of the structure, were analyzed for platinum group elements (PGE) |  | Gilmour, I, French, B.M, Franchi, I.A, Abbott, J.I, Hough, R.M, Newton, J, Koeberl, C (2003) Geochemistry of carbonaceous impactites from the Gardnos impact structure, Norway. Geochimica et Cosmochimica Acta, 67 (20) 3889-3903 doi:10.1016/s0016-7037(03)00213-8 | Journal (article/letter/editorial) | | of carbonaceous impactites from the Gardnos impact structure, Norway I. GILMOUR,1,* B. M. FRENCH,2 I. A...Abstract—The Gardnos impact structure in southern Norway is one of only two known impact structures (among...investigation of the geochemistry and petrology of Gardnos impactites (French et al., 1997) with additional...components have been identified in Gardnos impactites: (1) impact-produced diamonds, 0.5 to 1 m in size...size, with a cubic crystal structure, predominantly hexagonal morphologies with platey layers and an |  | | Journal (article/letter/editorial) | | zircon and titanite from the Gardnos impact structure, Norway: Evidence for impact at 546 Ma? E. Kalleson a...University of Oslo, Norway Department of Geosciences, University of Oslo, Norway Received 20 October...titanite were investigated in impactites of the Gardnos structure, a crater formed in Sveconorwegian (ca. 1...likely the incorporation of organic carbon during impact causing black staining of the zircon grains. The...mass spectrometry (ID-TIMS). Zircon grains without impact related features have U–Pb data showing moderate |  | | Journal (article/letter/editorial) | | impactites (suevite and impact melt rock) within the Gardnos structure, Norway Elin KALLESON1,2*, Henning...Oslo, Norway 2 Natural History Museum, University of Oslo, P.O. 1172 Blindern, NO-0318 Oslo, Norway * Corresponding...of clastrich impact melt rock, are found within the central part of the Gardnos structure. They are preserved...eroded remnants in the relatively small complex impact structure with a present diameter of 5 km. These rocks...subjected to during the impact event and deposition processes. This study discusses the impact-related deposits |  | | Journal (article/letter/editorial) | | Chemical compositions of impact melt breccias and target rocks from the Tenoumer impact crater, Mauritania...revision accepted 05 August 2005) Abstract–The impact melt breccias from the Tenoumer crater (consisting...target rock clasts. Analyses of major elements in impact melt rocks show lower contents of SiO2, Al2O3,...basement. In comparison with the bulk analyses of the impact melt, the glass is strongly enriched in Si-Al,...it is depleted both in Mg and Fe; moreover, the impact melt rocks are variably enriched or depleted in |  | Skublov, S. G., Myskova, T. A., Marin, Yu. B., Astaf’ev, B. Yu., Bogomolov, E. S., L’vov, P. A. (2013) Geochemistry of zircon rims with different ages in gneisses of the Kola Series (SIMS, SHRIMP-II) and the problem of early caledonian thermal activization of the Kola craton. Doklady Earth Sciences, 453 (2) 1250-1256 doi:10.1134/s1028334x13120167 | Journal (article/letter/editorial) | | intense granitization under the condi tions from amphibolite to granulite facies; and 2.6– 2.5 Ga, intrusion...intrusion of granitoids under the conditions of amphibolite facies of metamorphism [2, 3]. Mediumgranular...kbar) and later superimposed metamorphism of the amphibolite facies (600°C, 4.5–5 kbar) [4]. The absence of...rims (clearly observed due to the finezoned structure) with variable thickness, which may exceed the...period of later (second) metamorphism of the amphibolite facies. Previously [1] an older age of 2743 ± |  | Schmieder, Martin, Shaulis, Barry J., Lapen, Thomas J., Buchner, Elmar, Kring, David A. (2019) In situ U–Pb analysis of shocked zircon from the Charlevoix impact structure, Québec, Canada. Meteoritics & Planetary Science, 54 (8) 1808-1827 doi:10.1111/maps.13315 | Journal (article/letter/editorial) | | analysis of shocked zircon from the Charlevoix impact structure, Quebec, Canada Martin SCHMIEDER 1,2* ...a vesicular-fluidal impact melt rock from the ≥54 km Charlevoix impact structure, Quebec, Canada, suggests...Ordovician to Silurian age of 450 20 Ma for the impact. This age is anchored by concordant U–Pb results...seemingly chronometrically reset by the Charlevoix impact, but withstood later tectonometamorphic events...Ma and corroborates earlier suggestions that the impact occurred most likely in the Ordovician, and not |  | | Journal (article/letter/editorial) | | The search for fullerenes in rocks from the Ries impact crater Ota FRANK1*, Jan JEHLI»KA1, VÏra HAMPLOV¡2...Sudbury crater and the K-T and P-T boundaries. Impact rocks of the Ries crater, Germany, including samples...One involves the formation of fullerenes during impact, the other proposes their extraterrestrial origin...origin. We searched for fullerenes in the Ries impact structure, where the target rocks are carbon-rich and...carbon of fullerenes, had they formed during the impact. Impact diamonds were first reported from this crater |  | PUURA, V., HUBER, H., KIRS, J., KÄRKI, A., SUUROJA, K., KIRSIMÄE, K., KIVISILLA, J., KLEESMENT, A., KONSA, M., PREEDEN, U., SUUROJA, S., KOEBERL, C. (2004) Geology, petrography, shock petrography, and geochemistry of impactites and target rocks from the Kärdla crater, Estonia. Meteoritics & Planetary Science, 39 (3) 425-451 doi:10.1111/j.1945-5100.2004.tb00103.x | Journal (article/letter/editorial) | | Abstract–The Kärdla crater is a 4 km-wide impact structure of Late Ordovician age located on Hiiumaa...to be the result of early stage alteration in an impact-induced hydrothermal system. The chemical composition...INTRODUCTION In the Baltic Sea region, 15 meteorite impact structures of Paleozoic age have been identified...depending on high or low sea levels. Among these 15 impact craters (see Fig. 1), six structures of Middle...bestpreserved crater among the Paleozoic marine impact structures in this region. The Kärdla crater formed |  | | Journal (article/letter/editorial) | | feldspar recording low-barometry impact processes, Tenoumer impact structure, Mauritania Steven J. JARET1...accepted 16 April 2014) Abstract–The Tenoumer impact structure is a small, well-preserved crater within Archean...Archean to Paleoproterozoic amphibolite, gneiss, and granite of the Reguibat Shield, north-central Mauritania...Mauritania. The structure is surrounded by a thin ejecta blanket of crystalline blocks (granitic gneiss...gneiss, granite, and amphibolite) and impact-melt rocks. Evidence of shock metamorphism of quartz, most notably |  | | Journal (article/letter/editorial) | | terrestrial zircon do not exclusively form during impact events, but also as a result of seismic events...ascribes their formation to shock metamorphism during impact events (Corfu et al. 2003; Timms et al. 2012b;...the Svarthumlevatnet metagabbro, South-Central Norway. At few zircon grains presented in their study...metamorphic grade increases progressively from amphibolite facies in the SE to granulite facies in the northwest...completely (re-)equilibrated under granulite- and amphibolite-facies conditions during crustal attenuation/ |  | | Journal (article/letter/editorial) | | Crustal contaminants in the Permian Oslo Rift, South Norway: constraints from Precambrian geochemistry Tom... UniÕersity of Oslo, Sars Gate 1, N-0562 Oslo, Norway Abstract During the late Paleozoic Oslo rifting...et al., 1997a,b.. The Precambrian crust of South Norway may be divided into several sectors separated by...belt extending from southernmost Sweden to central Norway ŽTransscandinavian Igenous Belt, TIB.. The southwestern...and by rift-related Fig. 1. Simplified map of SE Norway, showing the position of the Oslo Rift with respect |  | | Journal (article/letter/editorial) | | Whitehouse J. Vestin Detrital zircon ages from southern Norway ± implications for the Proterozoic evolution of...metasediments from the high-grade Bamble Sector, southern Norway, gives the ®rst information on the timing of discrete...no record of rocks older than 1.6 Ga in southern Norway. The analysed metasediments are from a sequence...Mineralogical-Geological Museum, Sars Gate 1, N-0562 Oslo, Norway Fax: +47 22 85 18 00 e-mail: t.l.knudsen@toyen...high-grade metasediments of the Bamble Sector, southern Norway. a, b Oscillatory zoned, magmatic zircons which |  | PATI, Jayanta K., REIMOLD, Wolf Uwe, KOEBERL, Christian, PATI, Puniti (2008) The Dhala structure, Bundelkhand craton, Central India-Eroded remnant of a large Paleoproterozoic impact structure. Meteoritics & Planetary Science, 43 (8) 1383-1398 doi:10.1111/j.1945-5100.2008.tb00704.x | Journal (article/letter/editorial) | | Dhala structure, Bundelkhand craton, Central India—Eroded remnant of a large Paleoproterozoic impact structure...discovered Dhala structure, Madhya Pradesh State, India, is the eroded remnant of an impact structure with an...part of the Archean Bundelkhand craton. The pre-impact country rocks are predominantly granitoids of ∼2...post-impact sediments of the presumably >1.7 Ga Vindhyan Supergroup. Thus, the age for this impact event...currently bracketed by these two sequences. The Dhala structure is asymmetrically disposed with respect to a central |  | | Report (chapter) | | verification of an extraterrestrial component in impact-derived melt rocks or breccias can be of diagnostic...provide confirming evidence for an impact origin of a geological structure. Geochemical methods are used to...not be used as evidence against an impact origin of a crater structure. The determination of such an extraterrestrial...presence of a meteoritic component in a number of impact melt rocks and breccias. This method avoids the...meteoritic component has been established for about 41 impact structures (out of about 150 known on Earth), which |  | | Journal (article/letter/editorial) | | impactite interval, ICDP drill core LB-07A, Bosumtwi impact crater, Ghana Jared R. MORROW Department of Geological...volatile-rich target for the Bosumtwi impact event. INTRODUCTION The Bosumtwi impact crater, located in the Ashanti...to be the youngest well-preserved complex impact structure on Earth. The 1.07 Ma crater has a rim-to-rim...Bosumtwi structure proposed both cryptoexplosive (Rohleder 1936; Junner 1937) and meteorite impact (MacLaren...and geochemical work has clearly demonstrated its impact origin (e.g., Littler et al. 1961; El Goresy 1966; |  | | Journal (article/letter/editorial) | | grains from the Saarijärvi and Söderfjärden impact structures, Finland Teemu ÖHMAN1,2,3,4* and Ulla...tentatively, although both are considered to be proven impact structures. This work presents the first detailed...fractures (PFs) in quartz grains from a polymict impact breccia dike from Söderfjärden, and from sedimentary...high shear conditions, only compatible with an impact origin for these structures. Although a Proterozoic...more consistent with a Lower Cambrian (or younger) impact age. are otherwise exceedingly rare or totally |  | | Book | | Atlas of Terrestrial Impact Craters Encyclopedic Atlas of Terrestrial Impact Craters Enrico Flamini... • Editors Encyclopedic Atlas of Terrestrial Impact Craters 123 Editors Enrico Flamini Italian Space...Cover illustration: Radar image of the Gosses Bluff impact crater central peak (Australia) acquired in spotlight...shape depends on the impactor kinetic energy, the structure of the ground, and other parameters. They then... Contents Part I Chapters Impacting Bodies and Post-impact Modification Processes on Earth . . . . . . . . |  | | Book | | Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures Bevan M. French Research Collaborator...Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures. LPI Contribution No. 954, Lunar and...peninsula as it was 65 m.y. ago, just after the impact of an asteroid or comet about 10 km in diameter...huge Chixculub (Mexico) impact structure. In only a minute after the impact, a transient crater about...................... 16 Chapter 3: FORMATION OF IMPACT CRATERS ...................................... |  | | Journal (article/letter/editorial) | | components. We explore the ACCEPTED MANUSCRIPT IP T impact of incomplete a priori knowledge of the system...composition and interaction with target lithology during impact (Pratesi et al., 2010), the nearfield environment...component and help constrain its contribution to impact melt glasses (Attrep et al., 1991; Giordano et...vapor source term (e.g., distinguishing Fe-rich amphibolite melts from vaporized concrete and rebar). Trace...contribution of meteoritic or target rock composition to impact melt (French et al., 1997; Koeberl and Reimold |  | | Book | | Impact Struwues jinCanada Richard A.F. Grieve QB755.5 C3G76 > Geological Association of Canada Association...turesOOO0Ogrie Impact Structures in Canada eetutouiie to ‘spbsnsO ni Impact Structures in Canada...Canada Cataloguing in Publication Grieve, R. A. F. Impact structures in Canada / Richard A.F. Grieve. (GEOtext...1-897095-11-2 1. Meteorite craters--Canada. 2. Impact. 3. Cratering. 4. Collisions (Astrophysics). I...introduced me to the fascinating world of impact cratering and Canadian impact structures, in particular. As this |  | | Book | | the Response of the Earth System to Impact Processes/ ESF IMPACT. Ed. by lain Gilmour and Christian Koeberl...“The Response of the Earth System to Impact Processes” (IMPACT) of the European Science Foundation (ESF)...of common concern. The ESF IMPACT program deals with all aspects of impact research, mainly through the...the planet. The ESF IMPACT program is an aimed at understanding impact processes and their effects...between impact processes and the Earth System, i.e., defining and studying the effects of impact events |  | | Report (volume) | | Meteorites: Flux with Time and Impact Effects Geological Society Special Publications Series Editors... A. (eds) 1998. Meteorites. Flux with Time and Impact Effects. Geological Society, London, Special Publications...ROTHERY, D. A. (eds) Meteorites. Flux with Time and Impact Effects. Geological Society, London, Special Publications...PUBLICATION NO. 140 Meteorites: Flux with Time and Impact Effects E D I T E D BY M. M. G R A D Y Natural...for the purpose of 'investigating the mineral structure of the Earth'. The Society is Britain's national |
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