| 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...The original recognition of Gardnos as a deeply eroded impact structure between 900 and 400 Ma old has...shocked rocks (impactites). Deep erosion of the structure has erased the original rim, removed much of the | | | 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 | | 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) | | | 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 | | 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 | | RIIS, F., KALLESON, E., DYPVIK, H., KRØGLI, S. O., NILSEN, O. (2011) The Ritland impact structure, southwestern Norway. Meteoritics & Planetary Science, 46 (5) 748-761 doi:10.1111/j.1945-5100.2011.01188.x | Journal (article/letter/editorial) | 1945-5100.2011.01188.x The Ritland impact structure, southwestern Norway F. RIIS1, E. KALLESON2*, H. DYPVIK2...Petroleum Directorate, P.O. Box 600, NO-4003 Stavanger, Norway Department of Geosciences, University of Oslo,...Oslo, Norway 3 The Norwegian Forest and Landscape Institute, P.O. Box 115, NO-1431 Ås, Norway * Corresponding...Ritland structure is a newly discovered impact structure, which is located in southwestern Norway. The structure...structure is the remnant of a simple crater 2.5 km in diameter and 350 m deep, which was excavated in | | | Journal (article/letter/editorial) | Frontiers An appraisal of the ages of terrestrial impact structures F. Jourdan a,⁎, P.R. Renne b,c, W.U...online 30 July 2009 Editor: A.W. Hofmann Keywords: impact crater absolute chronology isotopic dating 40 Ar/39Ar...database a b s t r a c t There are 174 confirmed impact structures known on Earth (e.g., http://www.unb...ca/passc/ImpactDatabase/; late 2008) but a far smaller number of impact structures has yielded a well-constrained age....through geological time and evaluation of potential impact periodicity, (3) calibrating the absolute chronostratigraphic | | Li, Shan-Shan, Keerthy, S., Santosh, M., Singh, S.P., Deering, C.D., Satyanarayanan, M., Praveen, M.N., Aneeshkumar, V., Indu, G.K., Anilkumar, Y., Sajinkumar, K.S. (2018) Reply to the ‘Comment on Anatomy of impactites and shocked zircon grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India’ by Pati et al., 2018, Gondwana Research. Gondwana Research, 60. 218-221 doi:10.1016/j.gr.2018.03.018 | Journal (article/letter/editorial) | grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India’...grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India’...grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India’...grains from Dhala reveals Paleoproterozoic meteorite impact in the Archean basement rocks of Central India’...their REE redistribution. US (2018) including impact-related K2O metasomatism and impacted zircon grains | | 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) | 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 | | | 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 | | | Journal (article/letter/editorial) | http://meteoritics.org Impact melt rocks from the Paasselkä impact structure (SE Finland): Petrography...rocks from the ∼10 km and ≤1.9 Ga Paasselkä impact structure, SE Finland, were obtained. In this study...geochemical description of clast-rich Paasselkä impact melt rocks. Shock metamorphic features comprise...altered. The geochemical composition of the Paasselkä impact melt rocks is roughly consistent with the compositions...compositions of melt rocks from a number of impact structures located within the crystalline basement of | | Schmieder, M., Tohver, E., Jourdan, F., Denyszyn, S.W., Haines, P.W. (2015) Zircons from the Acraman impact melt rock (South Australia): Shock metamorphism, U–Pb and 40 Ar/ 39 Ar systematics, and implications for the isotopic dating of impact events. Geochimica et Cosmochimica Acta, 161. 71-100 doi:10.1016/j.gca.2015.04.021 | Journal (article/letter/editorial) | elsevier.com/locate/gca Zircons from the Acraman impact melt rock (South Australia): Shock metamorphism...systematics, and implications for the isotopic dating of impact events M. Schmieder a,b,⇑, E. Tohver a, F. Jourdan...grains separated from the most likely autochthonous impact melt rock in the central domain of the large, 40–...40– 90 km eroded Ediacaran Acraman impact structure in South Australia. Microtextural characteristics...ZrO2 (probably baddeleyite) that pseudomorph pre-impact zircon. The granular zircons correspond to the | | | Journal (article/letter/editorial) | Minerals of Norway - the (almost) complete inventory Gunnar Raade Preamble A monographic survey of the...the minerals of Norway (Norges Mineraler) was published by Neumann (1985), covering all minerals recorded...and synonyms. A large number of minerals new to Norway have been recorded since the book appeared. The...attempt to list all accepted mineral species from Norway, including those from Neumann (1985) and later...& Nickel 2001). Names of minerals discovered in Norway after the edition of Neumann's monograph are in | | 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) | 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) | November 2012) Abstract–Lockne is a concentric impact structure due to a layered target where weak sediments...breccia is significantly different from the direct impact breccia and the resurge deposit, we propose a separate...sedimentology of the Tramsta Breccia. The obliquity of impact combined with the layered target caused an asymmetric...surrounding the direct area of impact (e.g., Chesapeake Bay impact structure), or by a shallow excavation...well-preserved and well-documented marine-target impact structure in central Sweden (e.g., Lindstr€ om et al | | Tillberg, Mikael, Ivarsson, Magnus, Drake, Henrik, Whitehouse, Martin J., Kooijman, Ellen, Schmitt, Melanie (2019) Re-Evaluating the Age of Deep Biosphere Fossils in the Lockne Impact Structure. Geosciences, 9 (5) 202 doi:10.3390/geosciences9050202 | Journal (article/letter/editorial) | Age of Deep Biosphere Fossils in the Lockne Impact Structure Mikael Tillberg 1,2, *, Magnus Ivarsson 3...Published: 7 May 2019 Abstract: Impact-generated hydrothermal systems have been suggested...possibly beyond. Fossil evidence from a handful of impact craters worldwide have been used to support this...place at least 100 Myr after the impact event, thus long after the impact-induced hydrothermal activity...are not, as previously thought, related to the impact event, but nevertheless have colonized fractures | | | Journal (article/letter/editorial) | augite-plagioclase wedges in basement dolerites of Lockne impact structure, Sweden: A new shock wave-induced deformation...augite-plagioclase wedges in basement dolerites of Lockne impact structure, Sweden. The combined microscopic and spectroscopic...out of 18 studied, are distributed in the impact structure within a radius of up to 10 km from the crater...doleritic in situ basement rocks of the Lockne impact structure, Sweden. The study uses microscopic and spectroscopic...wedges. METHODOLOGY Fig. 1. Map of the Lockne impact structure showing lithology and location of samples | | | 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 | | | 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) | 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...amphibolite, gneiss, and granite of the Reguibat Shield, north-central Mauritania. The structure is surrounded by...crystalline blocks (granitic gneiss, granite, and amphibolite) and impact-melt rocks. Evidence of shock metamorphism...within small bodies of polymict, glass-rich breccia. Impact-related deformation features in oligoclase and | | 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 | | Kenkmann, T., Kiebach, F., Rosenau, M., Raschke, U., Pigowske, A., Mittelhaus, K., Eue, D. (2007) Coupled effects of impact and orogeny: Is the marine Lockne crater, Sweden, pristine?. Meteoritics & Planetary Science, 42 (11) 1995-2012 doi:10.1111/j.1945-5100.2007.tb00556.x | Journal (article/letter/editorial) | online at http://meteoritics.org Coupled effects of impact and orogeny: Is the marine Lockne crater, Sweden...understanding of marine-impact cratering processes is partly inferred from the geological structure of the Lockne...the western part of the crater, pre-impact, impact, and post-impact rocks are incorporated in Caledonian...were better preserved. The presence of the impact structure influenced orogenesis due to morphological...meteorite impact craters discovered on Earth so far is relatively small (175; Earth Impact Database 2007) | | | 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 . . . . . . . . |
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