 | | Journal (article/letter/editorial) | | veins in the central uplift of the Manicouagan impact structure: Context and genesis Marc B. Biren ⁎, John...2011 Editor: L. Stixrude Keywords: shock veins maskelynite stishovite Manicouagan shock excursion frictional...anorthositic central uplift of the Manicouagan impact structure. They occur as thin (b 2.5 mm wide), linear...the point of impact. The shock veins are distinguished by the development of maskelynite along vein margins...(after pyroxene), stishovite (after SiO2) and maskelynite/hollandite (after plagioclase). While shock veins |  | Hu, Sen, Li, Yang, Gu, Lixin, Tang, Xu, Zhang, Ting, Yamaguchi, Akira, Lin, Yangting, Changela, Hitesh (2020) Discovery of coesite from the martian shergottite Northwest Africa 8657. Geochimica et Cosmochimica Acta, 286. 404-417 doi:10.1016/j.gca.2020.07.021 | Journal (article/letter/editorial) | | coesite from the martian shergottite Northwest Africa 8657 Sen Hu, Yang Li, Lixin Gu, Xu Tang, Ting Zhang...coesite from the martian shergottite Northwest Africa 8657, Geochimica et Cosmochimica Acta (2020), doi:...coesite from the martian shergottite Northwest 2 Africa 8657 3 Sen Hu1, 2, 3*, Yang Li4, Lixin Gu1, Xu...iggcas.ac.cn. 19 Beituchengxi Road, Chaoyang 15 District, Beijing, China, 100029. 16 Keywords: Mars,...coesite have been identified: (I) in a 26 silica-maskelynite assemblage, (II) needle grains, and (III) granular |  | Jaret, Steven J., Phillips, Brian L., King, David T., Glotch, Tim D., Rahman, Zia, Wright, Shawn P. (2017) An unusual occurrence of coesite at the Lonar crater, India. Meteoritics & Planetary Science, 52 (1) 147-163 doi:10.1111/maps.12745 | Journal (article/letter/editorial) | | been widely known as a shock feature related to impact events, although it also occurs in nonimpact rocks...occurrences, coesite can only be diagnostic of impact events if found in shallow crustal or surficial...described as an impact product, coesite has not been widely reported at terrestrial impact sites, having...regarding impact-produced coesite are commonly lacking. Of the 30 reports of coesite at impact structures...transformation remain unclear. Particularly in the impact setting, two remaining questions are (1) the role |  | | Report (chapter) | | friction-induced melting in response to hypervelocity impact JOHN G. S P R A Y Department o f Geology, University...friction melts and cataclastic rocks in complex impact craters reflects the response of target lithologies...varying rates of strain. Within the Sudbury impact structure, thin (<2 mm), anastomosing veins, which can...similar relationship exists within the Vredefort impact structure, with the additional association of the...define the concentric fault systems of multi-ring impact basins. These E- (endogenic-) type pseudotachylytes |  | | Journal (article/letter/editorial) | | Revolutions in the Earth Sciences: Continental Drift, Impact and other Catastrophes by Wolf Uwe Reimold Jet...(http://photojournal.jpl.nasa.gov/catalog/PIA05578). SOUTH AFRICAN JOURNAL OF GEOLOGY, 2007, VOLUME 110 PAGES...DRIFT, IMPACT AND OTHER CATASTROPHES Revolutions in the Earth Sciences: Continental Drift, Impact and other...hu-berlin.de © 2007 March Geological Society of South Africa ABSTRACT This is the story of changing paradigms...processes affecting this planet. The nature of impact cratering as a fundamental universal process and |  | | Journal (article/letter/editorial) | | Shock-Metamorphic Features of Feldspars from the Xiuyan Impact Crater Feng Yin * and Deqiu Dai Hunan Provincial...events and can also provide clues for searching for impact craters on Earth. In this study, shocked alkali...feldspars in the lithic breccia and suevite from Xiuyan Impact Crater were investigated using polarizing optical...feldspar grains occurring in gneiss clasts in the impact breccia and four shock stages were identified,...features; high pressure and high temperature; Xiuyan Impact Crater 1. Introduction Feldspar, a framework silicate |  | | Journal (article/letter/editorial) | | IMPACT! – BOLIDES, CRATERS, AND CATASTROPHES Impacts everywhere! Even the bolides themselves are cratered...1.19 I t is now universally accepted that the impact of planetesimals, asteroids, and comets has been...process throughout the Solar System. Catastrophic impact events have been instrumental in developing the...dently related to an impact event (Chicxulub, Mexico). While the study of impact cratering is a multidisciplinary...since the beginning, focusing on the nature of impact-generated rocks and of the extraterrestrial projectiles |  | | 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...Reguibat Shield, north-central Mauritania. The structure is surrounded by a thin ejecta blanket of crystalline...(granitic gneiss, granite, and amphibolite) and impact-melt rocks. Evidence of shock metamorphism of quartz...within small bodies of polymict, glass-rich breccia. Impact-related deformation features in oligoclase and |  | | 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) | | veins in terrestrial impact structures: Evidence from the Steen River impact structure, Alberta, Canada Erin...Sciences, Edmonton, AB T6G 2E3, Canada c Arizona State University, School of Earth & Space Exploration...crystalline basement rocks of the Steen River impact structure (SRIS) are observed as thin (1– 510 lm wide)...cut across and displace host rock minerals. Solid-state phase transformations, such as ferro-pargasite to...garnet, formed during shock compression by solid state transformation of pargasite along shock vein margins |  | | Journal (article/letter/editorial) | | plagioclase feldspar from the Mistastin Lake impact structure, Canada Annemarie E. PICKERSGILL1,2,*, Gordon...Abstract–Shock metamorphism, caused by hypervelocity impact, is a poorly understood process in feldspar due...due to the complexity of the crystal structure, the relative ease of weathering, and chemical variations...andesine and labradorite from the Mistastin Lake impact structure, Labrador, Canada. Samples from a range of...uplift materials to clasts from various breccias and impact melt rocks. Evidence of shock metamorphism includes |  | | Journal (article/letter/editorial) | | in USA. Abstracts THE 145-Ma MOROKWENG IMPACT, SOUTH AFRICA: AN UNUSUAL, APPROXIMATELY 90-KILOMETER...Ainslie', 'AEC, P.O. Box 582, Pretoria 0001, South Africa (marco@aec.co.za), 2Schonland Research Centre...2050, South Africa, %old Fields Limited, Postnet Suite 252, Private Bag X30500, Houghton 2041, South Africa...Wits 2050, South Africa, SBilliton SA Limited, P.O. Box 61820, Marshalltown 2107, South Africa, 6Council...Geoscience, Private Bag X I 12, Pretoria 0001, South Africa, 'Department of Geology, Rand Afrikaans University |  | Louzada, Karin L., Weiss, Benjamin P., Maloof, Adam C., Stewart, Sarah T., Swanson-Hysell, Nicholas L., Soule, S. Adam (2008) Paleomagnetism of Lonar impact crater, India. Earth and Planetary Science Letters, 275 (3) 308-319 doi:10.1016/j.epsl.2008.08.025 | Journal (article/letter/editorial) | | l o c a t e / e p s l Paleomagnetism of Lonar impact crater, India Karin L. Louzada a,⁎, Benjamin P...2 October 2008 Editor: T. Spohn Keywords: Lonar impact crater shock paleomagnetism remanent magnetization...crater, India, is the best preserved terrestrial impact crater formed in basalt and is a unique terrestrial...folding. We observed only subtle effects from the impact on the rock-magnetic properties of Lonar materials...shock demagnetization or the presence of intense impact-induced or impactamplified transient magnetic fields |  | | 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) | | com/loi/tigr20 The Economic Potential of Terrestrial Impact Craters a R. A. F. Grieve & V. L. Masaitis a ...Masaitis (1994): The Economic Potential of Terrestrial Impact Craters, International Geology Review, 36:2, 105-151...reserved. The Economic Potential of Terrestrial Impact Craters R. A. E GRIEVE Geological Survey of Canada...concentrations of economic resources, terrestrial impact structures are the result of relatively rare geologic...Economic resources occur in a number of terrestrial impact structures. After providing a context by briefly |  | | Book | | EARTH SCIENCES Andrew Y. Glikson The Asteroid Impact Connection of Planetary Evolution With Special...asteroid Eros (34.4 × 11.2 × 11.2 km) (NASA) and S3 impact microkrystites, Barberton Greenstone Belt (courtesy...(courtesy G. Byerly) Andrew Y. Glikson The Asteroid Impact Connection of Planetary Evolution With Special...relevant protective laws and regulations and therefore free for general use. While the advice and information...to the material contained herein. Printed on acid-free paper Springer is part of Springer Science+Business |  | Crósta, A.P., Reimold, W.U., Vasconcelos, M.A.R., Hauser, N., Oliveira, G.J.G., Maziviero, M.V., Góes, A.M. (2019) Impact cratering: The South American record – Part 1. Geochemistry, 79 (1) 1-61 doi:10.1016/j.chemer.2018.06.001 | Journal (article/letter/editorial) | | elsevier.com/locate/chemer Invited review Impact cratering: The South American record – Part 1 ⁎ A.P. Cróstaa...J.G. Oliveiraa, M.V. Mazivieroa, A.M. Góese a State University of Campinas, Brazil University of Brasília...Keywords: Impact crater Impact structure Impact record Shock metamorphism Meteorite Impact glasses Tektites...Distal ejecta K-Pg boundary Airburst South America The Earth’s impact record is known to be rather limited...190 impact structures currently known on Earth, representing a minor fraction of all the impact events |  | | Journal (article/letter/editorial) | | that constrain models of terrestrial hypervelocity impact craters Michael R. DENCE* 2602 – 38 Metropole Private...2016; revision accepted 30 November 2016) Abstract–Impact structures in the crystalline rocks of the Canadian...original surface then collapses to form a peak-ring structure. These relationships demonstrate the dominant...(1999) of the mechanics of the various stages of impact crater formation is the precursor of the Bridging...transient crater is key to modeling hypervelocity impact structures and is the starting point for understanding |  | | Journal (article/letter/editorial) | | org Shock-metamorphosed zircon in terrestrial impact craters A. WITTMANN*, T. KENKMANN, R. T. SCHMITT...metamorphism of zircon, samples from three well-studied impact craters were analyzed by optical microscopy, scanning...with a granular texture during devitrification of impact melts. Other granular textures represent recrystallized...continuous impactite sequence of the Chicxulub impact structure yields implications for the post-shock temperature...ancient impact structures, e.g., Sudbury (Krogh and Davis 1984; Krogh et al. 1996) and Vredefort (Kamo |  | Schulz, Toni, Luguet, Ambre, Wegner, Wencke, van Acken, David, Koeberl, Christian (2016) Target rocks, impact glasses, and melt rocks from the Lonar crater, India: Highly siderophile element systematics and Sr-Nd-Os isotopic signatures. Meteoritics & Planetary Science, 51 (7) 1323-1339 doi:10.1111/maps.12665 | Journal (article/letter/editorial) | | 1–17 (2016) doi: 10.1111/maps.12665 Target rocks, impact glasses, and melt rocks from the Lonar crater,...Abstract–The Lonar crater is a ~0.57-Myr-old impact structure located in the Deccan Traps of the Indian...It probably represents the best-preserved impact structure hosted in continental flood basalts, providing...providing unique opportunities to study processes of impact cratering in basaltic targets. Here we present...data for target basalts and impactites (impact glasses and impact melt rocks) from the Lonar area. These |  | | Journal (article/letter/editorial) | | clasts or melt particles in proximal impactites at impact craters, and rarely in distal impactites. They...Shock-metamorphosed rocks are characteristic constituents of impact formations produced by interplanetary collisions...So far, they are well known and documented from impact craters on Earth; from returned lunar rocks of...and sediments exposed on planetary bodies. The impact process leads to a quasi-hemispherically propagating...target at some radial distance from the point of impact (Fig. 1). Considering the weakest recognizable |  | | 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 |  | REIMOLD, Wolf U., KELLEY, Simon P., SHERLOCK, Sarah C., HENKEL, Herbert, KOEBERL, Christian (2005) Laser argon dating of melt breccias from the Siljan impact structure, Sweden: Implications for a possible relationship to Late Devonian extinction events. Meteoritics & Planetary Science, 40 (4) 591-607 doi:10.1111/j.1945-5100.2005.tb00965.x | Journal (article/letter/editorial) | | argon dating of melt breccias from the Siljan impact structure, Sweden: Implications for a possible relationship...Private Bag 3, P. O. Wits 2050, Johannesburg, South Africa 2Department of Earth Sciences, Open University...earlier studies, the 65–75 km diameter Siljan impact structure in Sweden has been linked to the Late Devonian...Devonian mass extinction event. The Siljan impact event has previously been dated by KAr and Ar-Ar chronology...breccia samples from Siljan (interpreted to be impact melt breccia). The analytical results show some |  | | Journal (article/letter/editorial) | | Germany *Correspondence author’s e-mail address: impact@gsc.emr.ca (Received 1995 July 12; accepted in...criterion for the identification of terrestrial impact structures and lithologies. Its utility is due...microstructures, however, are unaffected by post-impact thermal events, except if quartz is recrystallized...shock pressure is provided. The effe6t of post-impact events on PDFs is generally limited to annealing...and lechatelierite) are discussed for terrestrial impact structures in both crystalline (non-porous) and |  | | Book | | relevant protective laws and regulations and therefore free for general use. The publisher, the authors and...maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by the...and Robert Sinclair Dietz: Pioneers of asteroid impact research Preface Thanks to their long-term geological...number of impact structures and probable impact structures. These include 38 confirmed asteroid impact structures...which constitute possible to probable asteroid impact structures. These structures have been the subject |
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