 | Skála, R., Jonášová, Š., Žák, K., Ďurišová, J., Brachaniec, T., Magna, T. (2016) New constraints on the Polish moldavite finds: a separate sub-strewn field of the central European tektite field or re-deposited materials?. Journal of GEOsciences, 61 (2) 171-191 | Journal (article/letter/editorial) | | separate sub-strewn field of the central European tektite field or re-deposited materials? Roman SKÁLA1,2*...Geology, The Czech Academy of Sciences, Rozvojová 269, 165 00 Prague 6, Czech Republic; skala@gli.cas...University in Prague, Albertov 6, 128 43 Prague 2, Czech Republic 3 Department of Geochemistry, Mineralogy and...Sosnowiec, Poland 4 Czech Geological Survey, Klárov 3, 118 21 Prague 1, Czech Republic * Corresponding author...geographically limited areas in Central Europe: South Bohemia, Western Bohemia (Cheb Basin), Western Moravia |  | | Journal (article/letter/editorial) | | (Volume Graphics) and ImageJ were utilized. Four tektite samples from the Central European strewn field...sizes throughout the tektite samples vary. The evaluated porosity volume of the Bohemian moldavites ranges...are found in different strewn fields with corresponding sub-strewn fields (Heide & Heide, 2011; Rantzsch...the frontal parts, which results in different tektite shapes. In the third stage, after striking the...geological interpretations concerning the origin of the tektite shapes. We suggest that there is a correlation |  | | Journal (article/letter/editorial) | | argon-40/argon-39 ages of moldavites from the Bohemian and Lusatian strewn fields WINFRIED H. SCHWARZ* AND HANS J....southern Bohemia (near Ceske Budejovice, Czech Republic) and a tektite from Lusatia (near Dresden, Germany)...age relations ofthe Bohemian and Lusatian samples. The mean plateauage of the Bohemian samples, which range...and demonstrates that the fall ofLusatian and Bohemian tektites were contemporaneous. Because of their...Tertiary sediments in Bohemia and Moravia, Czech Republic (Suess, 1900). They are tektites (i.e., glasses |  | | Journal (article/letter/editorial) | | MOLDAVITES INTRODUCTION To date, only four tektite strewn fields have been recognized, namely the Central...American, Australasian, and Ivory Coast strewn fields (Koeberl [2007] and references therein). The source...over the areas of three current countries: the Czech Republic, Germany, and Austria. These tektites have...WNOZ/Mt/82. RESULTS Fig. 1. An outline map of tektite distribution in Central Europe with the location...moldavites to the Lower Silesia area. The substrewn fields are marked according to St€ offler et al. (2002) |  | | Journal (article/letter/editorial) | | 1111/maps.13035 An experimental model for the tektite fluvial transport based on the most distal Polish...ejecta, scattered over the territory of the Czech Republic (Trnka and Houzar 2002), Lausitz area in Germany...(24 km in diameter), and the Central European tektite strewn field, all resulted from a sole impact event...the various age sediments. Only the age of two Czech moldavites-bearing deposits, the Domanin Formation...paleogeographical reconstruction and from the Polish tektite size, Brachaniec et al. (2014b, 2015, 2016) concluded |  | Schmieder, Martin, Kennedy, Trudi, Jourdan, Fred, Buchner, Elmar, Reimold, Wolf Uwe (2018) A high-precision 40Ar/39Ar age for the Nördlinger Ries impact crater, Germany, and implications for the accurate dating of terrestrial impact events. Geochimica et Cosmochimica Acta, 220. 146-157 doi:10.1016/j.gca.2017.09.036 | Journal (article/letter/editorial) | | , 2013); or in the SUBO 18 drill core from the south-central Ries near Enkingen, where melt-matrix breccia...which have been found in Bohemia and Moravia, Czech Republic (e.g., Stöffler et al., 2002; Trnka and Houzar...different localities in the Bohemian part of the Central European tektite strewn field (Fig. 1). The data...14°18’E; Fig. 2A) in the southern Bohemian domain of the Central European Tektite strewn field (Fig. 1) were...near the northern rim of the Ries crater), (5) the fields near Heerhof (honey-yellow glass particles from |  | Rodovská, Zuzana, Magna, Tomáš, Žák, Karel, Kato, Chizu, Savage, Paul S., Moynier, Frédéric, Skála, Roman, Ježek, Josef (2017) Implications for behavior of volatile elements during impacts-Zinc and copper systematics in sediments from the Ries impact structure and central European tektites. Meteoritics & Planetary Science, 52 (10) 2178-2192 doi:10.1111/maps.12922 | Journal (article/letter/editorial) | | Roman SKALA 1 Czech Geological Survey, Kl arov 3, CZ-118 21 Prague 1, Czech Republic Faculty of Science...Albertov 6, CZ-128 43 Prague 2, Czech Republic 3 Institute of Geology, The Czech Academy of Sciences, Rozvojov...Rozvojov a 269, CZ-165 00 Prague 6, Czech Republic 4 Institut de Physique du Globe de Paris, Universite...suite of tektites from four different substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia) and chemically...2013; Z major geographically distinct tektite strewn fields are recognized: North American, Central |  | Řanda, Zdeněk, Mizera, Jiří, Frána, Jaroslav, KuČEra, Jan (2008) Geochemical characterization of moldavites from a new locality, the Cheb Basin, Czech Republic. Meteoritics & Planetary Science, 43 (3) 461-477 doi:10.1111/j.1945-5100.2008.tb00666.x | Journal (article/letter/editorial) | | moldavites from a new locality, the Cheb Basin, Czech Republic ZdenÏk ÿANDA1, Ji¯í MIZERA1, 2*, Jaroslav FRÁNA1...Institute, Academy of Sciences of the Czech Republic, 250 68 ÿež, Czech Republic of Rock Structure and Mechanics...of Sciences of the Czech Republic, V HolešoviËkách 41, 182 09 Praha 8, Czech Republic *Corresponding author...moldavites with moldavites from other substrewn fields in both major and trace element composition shows...green” moldavites, a subgroup of the Southern Bohemian moldavites. Seven samples of group 2 and 6 samples |  | | Journal (article/letter/editorial) | | different Rt, Ra and D data concerning their strewn fields. We suggest that the applied methods are appropriate...Computed tomography · Fractal dimension · Roughness · Tektite 1 Introduction Tektites are formed from melted...the description of tektites from different strewn fields have been well reported. In particular, geochemical...Suess 1900). Obtaining efficient data concerning tektite surfaces using conventional methods has been difficult...2005, 2006) as well as in other related scientific fields. For example, Orford and Whalley (1983) used the |  | | Journal (article/letter/editorial) | | cultures. The new locations are situated between the Bohemian and Moravian parts of the moldavite strewn field...field, which is thus shown to extend further south than previously known. Most of the samples show clear...location. No unambiguous association with either the Bohemian or the Moravian group is evident either for the...OCCUR IN ONE of the world's four known tektite strewn fields (Australasian, North American, Czechoslovakian...Czechoslovakian, and Ivory Coast strewn fields) and are named from their occurrence near the river Moldau in |  | Rodovská, Zuzana, Magna, Tomáš, Žák, Karel, Skála, Roman, Brachaniec, Tomasz, Visscher, Channon (2016) The fate of moderately volatile elements in impact events-Lithium connection between the Ries sediments and central European tektites. Meteoritics & Planetary Science, 51 (12) 2403-2415 doi:10.1111/maps.12733 | Journal (article/letter/editorial) | | Channon VISSCHER 1 Czech Geological Survey, Kl arov 3, CZ-118 21 Prague 1, Czech Republic Faculty of Science...Albertov 6, CZ-128 43 Prague 2, Czech Republic 3 Institute of Geology, The Czech Academy of Sciences, Rozvojov...Rozvojov a 269, CZ-165 00 Prague 6, Czech Republic 4 Department of Geochemistry, Mineralogy, and Petrology...tektites (moldavites) from several substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia), including...volumes of carbonates are the major components for tektite formation whereas residual paleokarst sediments |  | | Journal (article/letter/editorial) | | formation host the moldavites. Characteristic tektite features, especially bubbles and inclusions of...been described from three substrewn fields in the Czech Republic, Germany, and Austria (Trnka and Houzar...GEOLOGICAL SETTINGS We have discovered two new tektite occurrences in Poland. The first new locality is...transport of tektites to SW Poland. The substrewn fields (excluding the Polish area) are marked following...background, and beam diameter: 1 lm. The selected tektite subsamples were thoroughly crushed and ground to |  | | Journal (article/letter/editorial) | | com/locate/gca Moldavites from the Cheb Basin, Czech Republic Roman Skála a,b,*, Ladislav Strnad b, Catherine...Sciences of the Czech Republic, Rozvojová 269 CZ-16500 Praha 6 – Lysolaje, Czech Republic Institute of...Science, Charles University CZ-12843 Praha 2, Czech Republic c Bayerisches Geoinstitut, Universität Bayreuth...Němcové 386, CZ-351 01 Františkovy Lázně, Czech Republic Received 13 May 2008; accepted in revised...source of Central European tektites, next to the South Bohemian and West Moravian strewn subfields. Basic macroscopic |  | Magna, T., Deutsch, A., Mezger, K., Skála, R., Seitz, H.-M., Mizera, J., Řanda, Z., Adolph, L. (2011) Lithium in tektites and impact glasses: Implications for sources, histories and large impacts. Geochimica et Cosmochimica Acta, 75 (8) 2137-2158 doi:10.1016/j.gca.2011.01.032 | Journal (article/letter/editorial) | | Münster, Germany b Czech Geological Survey, Klárov 3, CZ-118 21 Prague 1, Czech Republic c Institut für...of Sciences of the Czech Republic, Rozvojová 269, CZ-165 00 Prague 6, Czech Republic f Institut für Geowissenschaften...Academy of Sciences of the Czech Republic, CZ-250 68 Řež, Czech Republic Received 13 August 2010; accepted...Artemieva et al., 2002; Artemieva, 2008). The tektite material is ejected from the source crater in the...fields far from the point of origin. Four major tektite strewn fields are known at present, (i) the 0.8 |  | | Journal (article/letter/editorial) | | samples from different substrewn-fields in Germany and the Czech Republic. The extracted CL data were supported...different shades of green in the matrix of the tektite glasses and a variation of blue color for lechatelierite...there is no direct correlation between substrewn-fields and CL characteristics. Nevertheless, CL microscopy...textures such as streaks and lechatelierite in the tektite matrix due to the luminescence properties of the...tektites in general to differentiate individual strewn-fields on Earth (e.g., Piacenza 1997; Gucsik et al. 2004; |  | | Journal (issue) | | in Moldavite from ‘Mercedes-Star’ Chlum, Czech Quartz Republic Cause of Colour and Dichroism in Laurentthomasite...‘Mercedes-Star’ Moldavite from Chlum, Czec Quartz h Republic / No. 7 / 2023 Cause of Colour in Laurentthomasit...and Jacques Fereire Moldavite from Chlum, Czech Republic: Mining and Gem Properties 696 By Tom Stephan...Lab, Shanghai, China Jaroslav Hyršl Prague, Czech Republic Menahem Sevdermish Gemewizard Ltd, Ramat Gan...Frederick ‘Lin’ Sutherland Port Macquarie, New South Wales, Australia Pornsawat Wathanakul Kasetsart |  | | Journal (article/letter/editorial) | | 40Ar/39Ar laser probe dating of the Central European tektite-producing impact event Marinella A. LAURENZI,1*...and Mechanics, Academy of Sciences, Prague, Czech Republic *Corresponding author. E-mail: m.laurenzi@igg...from 7 individual specimens from the Southern Bohemian and Moravian subfields are restricted to a narrow...result gives a more precise age not only for the tektite field but also for its producing impact. If the...glasses that can be found in only 4 “classic” strewn fields in North America, Central Europe, the Ivory Coast |  | Žák, Karel, Skála, Roman, Pack, Andreas, Ackerman, Lukáš, Křížová, Šárka (2019) Triple oxygen isotope composition of Australasian tektites. Meteoritics & Planetary Science, 54 (5) 1167-1181 doi:10.1111/maps.13251 | Journal (article/letter/editorial) | | Geology of the Czech Academy of Sciences, Rozvojov a 269, CZ-165 00 Praha 6, Czech Republic 2 Geowissenschaftliches...University, Albertov 6, CZ-128 43 Praha 2, Czech Republic * Corresponding author. E-mail: zak@gli.cas...geographically limited regions, so-called strewn fields. Their origin is connected with hypervelocity impacts...al. 2008; Sk ala et al. 2009). In these strewn fields, the sizes of the known Muong Nong-type tektites...its exact proportion difficult. Much like all tektite glasses, the AAT are extremely dry with only 80–120 |  | | Journal (article/letter/editorial) | | impact may lead to glass production, which is named tektite. The distribution and chemical features of impact...the morphology of tektites. Up to now, only four tektite strewnfields are recognized (Koeberl 2007 and references...distributed over three specific areas: the Czech Republic (Bohemia, Moravia and near Cheb), Lusatia (SE...Gozdnica sandpit, one tektite from c. 0.5 tone of sieved sediment was collected. The tektite morphologies were...green bottle colour and are complete. Only one tektite (Text-fig. 2B) reveals slight corrosion marks. |  | | Journal (article/letter/editorial) | | layering, bubble shape and minera& along faults in tektite origin VIRGIL E. BARNES Bureau of Economic Geology...otherwise petrographically appears identical to tektite glass. BARNES (1961a) after examining the geologic...BARNES (196lb) suggested the term “Muon& Nong-type tektite” for layered tektites which appeared to have formed...pnddles, in order to distinguish this type of tektite from the normal type which consists of spheres...These layered tektites have been found among all tektite groups except australites, javanites and Ivory |  | | Journal (article/letter/editorial) | | the American, European, and Australasian strewn fields. The main experimental technique used in the studies...indicates maghemite and 1% troilite. The Cambodian tektite appeared individualized from other australasites...over several vast strewn fields on the Earth’s surface. Four strewn fields have been well-established:...well-established: moldavites in Europe, in the Czech Republic (the only ones that are light-green and translucent);...in the largest strewn field, which ranges from South Asia to the Antarctic Ocean [7]. Enclosed in the |  | Křížová, Šárka, Skála, Roman, Halodová, Patricie, Žák, Karel, Ackerman, Lukáš (2019) Near end-member shenzhuangite, NiFeS2, found in Muong Nong-type tektites from Laos. American Mineralogist, 104 (8) 1165-1172 doi:10.2138/am-2019-6930 | Journal (article/letter/editorial) | | Geology of the Czech Academy of Sciences, Rozvojová 269, CZ-165 00 Prague 6, Czech Republic Institute of...Prague 2, Czech Republic 3 Czech Geological Survey, Klárov 3, CZ-118 21 Prague 1, Czech Republic 2 Abstract...chondrite Suizhou, the mineral embedded in the tektite glass is nearly free of copper, making the composition...areas called strewn fields (Koeberl 2014). The youngest and largest of these strewn fields is the Australasian...majority of these minerals, present as inclusions in tektite glass, are oxygen-bearing compounds (oxides, phosphates |  | | Report (chapter) | | Australia Present address: 44 Robert Franklin Way, South Cerney, Cirencester, Gloucestershire, UK (e-mail:...microtektites, thus extending three of the strewn fields to large areas covered by sea. Kindred occurrences...in the USSR, in a Pliocene structure beneath the south Pacific Ocean, at the Cretacetus-Tertiary (K/T)...by him are similar to those still found in the Czech and Slovak republics, Austria and Germany - the...Tektites from Hainan Island, South China: dumbbell splash form and layered tektite glass. cultural strata near |  | Žák, Karel, Skála, Roman, Řanda, Zdeněk, Mizera, Jiří, Heissig, Kurt, Ackerman, Lukáš, Ďurišová, Jana, Jonášová, Šárka, Kameník, Jan, Magna, Tomáš (2016) Chemistry of Tertiary sediments in the surroundings of the Ries impact structure and moldavite formation revisited. Geochimica et Cosmochimica Acta, 179. 287-311 doi:10.1016/j.gca.2016.01.025 | Journal (article/letter/editorial) | | Geology, The Czech Academy of Sciences, Rozvojová 269, CZ-165 00 Prague 6, Czech Republic; zak@gli.cas...Institute, The Czech Academy of Sciences, Hlavní 130, CZ-250 68 HusinecŘež, Czech Republic; randa@ujf.cas...uni-muenchen.de d Czech Geological Survey, Klárov 3, CZ-118 21 Prague 1, Czech Republic; tomas.magna@geology...by considering elemental fractionation during tektite formation. The proposed conceptual model of moldavite...simultaneously, the melt droplets coalesced into larger tektite bodies. Steps (iii) to (v) may have overlapped |  | | Journal (article/letter/editorial) | | have been tied together with the discussion on tektite origin. However, apart from these items of preference...with natural glasses was presented in 1797 to the Bohemian Academy of Sciences, by JOIICf Mayer, a professor...group oftektites found in Bohemia (now the Czech Republic). It is fitting that the present volume was...switched from teaching in German to teaching in Czech (and therefore lost its title as being the oldest...The volume has been translated into English from Czech and is the second and updated edition of a 1987 |
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