 | | Report (issue) | | Reidite Zr(SiO4) Crystal Data: Tetragonal. Point Group: 4/m. As elongate skeletal crystals to 10 mm...31.44 65.92 1.25 0.06 0.09 0.01 0.09 98.86 (1) Impact ejecta layer, USA continental shelf; average of...Epitaxially oriented in shock-metamorphosed zircons in an impact ejecta layer in marine sediment on the upper continental...detrital in clastic sedimentary rocks. Association: Impact glass (tektites), shocked quartz and feldspar with...From numerous impact structures, including the Woodleigh impact structure (Western Australia); the Vredefort |  | Montalvo, Stephanie D., Reddy, Steven M., Saxey, David W., Rickard, William D.A., Fougerouse, Denis, Quadir, Zakaria, Johnson, Tim E. (2019) Nanoscale constraints on the shock-induced transformation of zircon to reidite. Chemical Geology, 507. 85-95 doi:10.1016/j.chemgeo.2018.12.039 | Journal (article/letter/editorial) | | the shock-induced transformation of zircon to reidite Stephanie D. Montalvo, Steven M. Reddy, David...the shock-induced transformation of zircon to reidite. Chemge (2019), https://doi.org/10.1016/j.chemgeo...the shock-induced transformation of zircon to reidite Stephanie D. Montalvoa,b,*, Steven M. Reddya,b...Perth, Australia. School of Earth and Planetary Science, Curtin University, Perth, Australia. c Microscopy...Geological Processes and Mineral MA d NU Australia. Resources, China University of Geosciences, |  | Timms, Nicholas E., , , Pearce, Mark A., Erickson, Timmons M., Cavosie, Aaron J., Rae, Auriol S. P., Wheeler, John, Wittmann, Axel, Ferrière, Ludovic, Poelchau, Michael H., Tomioka, Naotaka, Collins, Gareth S., Gulick, Sean P. S., Rasmussen, Cornelia, Morgan, Joanna V. (2019) New shock microstructures in titanite (CaTiSiO5) from the peak ring of the Chicxulub impact structure, Mexico. Contributions to Mineralogy and Petrology, 174 (5) doi:10.1007/s00410-019-1565-7 | Journal (article/letter/editorial) | | (CaTiSiO5) from the peak ring of the Chicxulub impact structure, Mexico Nicholas E. Timms1 · Mark A. Pearce2...diagnostic microstructural evidence of hypervelocity-impact processes. To date, little is known about the response...within shocked granitoid from the Chicxulub impact structure, Mexico. Titanite grains in the newly acquired...Burgers vector b = < 341 > can be active during impact metamorphism. Titanite twins in the modes described...metamorphism to identify both ancient and recent impact evidence on Earth, microstructural analysis of |  | | Journal (article/letter/editorial) | | zircon – a case study from the Rochechouart impact structure, France Cornelia Rasmussen, Daniel F. Stockli...zircon – a case study from the Rochechouart impact structure, France, Geochimica et Cosmochimica Acta (2020)...zircon – a case study from the Rochechouart impact structure, France Cornelia Rasmussen1,2*, Daniel F...USA. 4 Lunar and Planetary Institute – USRA, 3600 Bay Area Boulevard, Houston TX 77058, USA *Corresponding...*Corresponding author Abstract Age determination of impact structures via the zircon U–Pb system remains challenging |  | Hauser, Natalia, Reimold, Wolf Uwe, Cavosie, Aaron J., Crósta, Alvaro P., Schwarz, Winfried H., Trieloff, Mario, Da Silva Maia de Souza, Carolinna, Pereira, Luciana A., Rodrigues, Eduardo N., Brown, Matthews (2019) Linking shock textures revealed by BSE, CL, and EBSD with U‐Pb data (LA‐ICP‐MS and SIMS) from zircon from the Araguainha impact structure, Brazil. Meteoritics & Planetary Science, 54 (10) 2286-2311 doi:10.1111/maps.13371 | Journal (article/letter/editorial) | | and SIMS) from zircon from the Araguainha impact structure, Brazil 3 Natalia HAUSER 1*, Wolf Uwe REIMOLD...Sciences, Curtin University, Bentley, WA 6102, Australia 3 Institute of Geosciences, University of Campinas...July 2019) Abstract–A silicious impact melt rock from polymict impact breccia of the northern part of...the alkali granite core of the Araguainha impact structure, central Brazil, has been investigated. The...melt rock is thought to represent a large mass of impact-generated melt in suevite. In particular, a diverse |  | | Journal (article/letter/editorial) | | bglass@udel.edu Key Words microtektites, microkrystites, impact ejecta, ejecta layers, Precambrian ■ Abstract A...of kilometers from the point of impact. These particles, known as impact spherules, have been detected...million years to 3.47 billion years. Unaltered impact spherules consist entirely of glass (microtektites)...and crystals grown in flight (microkrystites). Impact spherule layers form very rapidly and can be very...wider identification of and more extensive study of impact spherule layers. INTRODUCTION Impacts by large |  | | Journal (article/letter/editorial) | | reported polycrystalline zircons from magmatic and impact settings. This work shows how appearance, crystallographic...EBSD; shear zones; Eastern Alps; Southern Alps; impact recrystallization; granitoids 1. Introduction...µm in diameter [15–19], but attempts to date an impact event with this polygranular zircon were not entirely...believed to be formed after reidite and can be dated for the age of an impact event [28,29]. The fine granules...unsystematically-oriented granules also yields isotopic ages of impact events [22,23,27]. Such granules have euhedral |  | | Book | | Impact Studies Series Editor Christian Koeberl Editorial Board Eric Buffetaut, CNRS, Paris, France Iain...com/series/4698 Billy P. Glass Bruce M. Simonson • Distal Impact Ejecta Layers A Record of Large Impacts in Sedimentary... Preface It is becoming increasingly clear that impact cratering has played a major role in the evolution...correlation between the impact that produced the Chicxulub impact structure on the Yucatan Peninsula...Earth is so geologically active, most terrestrial impact structures have been either deeply buried beneath |  | | Journal (article/letter/editorial) | | shock-induced pseudotachylites, Vredefort impact structure, South Africa Elizaveta Kovaleva, Matthew...shock-induced pseudotachylites, Vredefort impact structure, South Africa, LITHOS (2020), https://doi...shock-induced pseudotachylites, Vredefort impact structure, South Africa Elizaveta Kovalevaa,* kovalevae@ufs...ABSTRACT Impact-generated pseudotachylites (PTs) have been extensively studied in the Vredefort Impact Structure...dolerite-hosted PT veins within the Vredefort impact structure. ro The groundmasses of dolerite-hosted |  | | Journal (article/letter/editorial) | | minerals Article Properties of Impact-Related Pseudotachylite and Associated Shocked Zircon and Monazite...Upper Levels of a Large Impact Basin: A Case Study from the Vredefort Impact Structure Elizaveta Kovaleva... Abstract: The Vredefort impact structure in South Africa is deeply eroded to its lowermost...lowermost levels. However, granophyre (impact melt) dykes in such structures preserve clasts of supracrustal...down from the uppermost levels of the initial structure. Studying these clasts is the only way to understand |  | | Journal (article/letter/editorial) | | Revolutions in the Earth Sciences: Continental Drift, Impact and other Catastrophes by Wolf Uwe Reimold Jet...DRIFT, IMPACT AND OTHER CATASTROPHES Revolutions in the Earth Sciences: Continental Drift, Impact and other...processes affecting this planet. The nature of impact cratering as a fundamental universal process and...and the tools for the recognition of impact structures will be examined, and the role of this process...formation, and leading to the question whether past impact catastrophes have, at times, spurned major mass |  | | 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...Radar image of the Gosses Bluff impact crater central peak (Australia) acquired in spotlight mode in right...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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