 | | Journal (article/letter/editorial) | | meteoritic component in impact-melt rocks of the Chesapeake Bay impact structure, Virginia, USAâ Evidence from...20742, USA Geological Survey, 926A National Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192...20192, USA 3Geology and Geoinformation Division, Korea Institution of Geoscience and Mineral Resources, Daejeon...impactmelt rocks in the Chesapeake Bay impact structure were determined. The impact-melt rocks come from...the central uplift at Cape Charles, Virginia. The 187Os/188Os ratios of impact-melt rocks range from |  | BARTOSOVA, Katerina, GIER, Susanne, HORTON, J. Wright, KOEBERL, Christian, MADER, Dieter, DYPVIK, Henning (2010) Petrography, mineralogy, and geochemistry of deep gravelly sands in the Eyreville B core, Chesapeake Bay impact structure. Meteoritics & Planetary Science, 45 (6) 1021-1052 doi:10.1111/j.1945-5100.2010.01077.x | Journal (article/letter/editorial) | | gravelly sands in the Eyreville B core, Chesapeake Bay impact structure Katerina BARTOSOVA1*, Susanne GIER2...Geological Survey, 926A National Center, Reston, Virginia 20192, USA 4 Department of Geosciences, University of...ICDPâUSGS Eyreville drill cores in the Chesapeake Bay impact structure reached a total depth of 1766 m and...basement-derived schists and granites â pegmatites, impact breccias, mostly poorly lithiïŹed gravelly sand...Paleogene marine microfossils noted) during the impact remobilization and redeposition. The unshocked |  | Jackson, J. C., Horton, J. W., Chou, I-M., Belkin, H. E. (2006) A shock-induced polymorph of anatase and rutile from the Chesapeake Bay impact structure, Virginia, U.S.A. American Mineralogist, 91 (4) 604-608 doi:10.2138/am.2006.2061 | Journal (article/letter/editorial) | | of anatase and rutile from the Chesapeake Bay impact structure, Virginia, U.S.A. JOHN C. JACKSON,* J. WRIGHT...S. Geological Survey, National Center, Reston, Virginia 20192, U.S.A. ABSTRACT A shock-induced polymorph...identified in breccias from the late Eocene Chesapeake Bay impact structure. The breccia samples are from a recent...cored test hole in the central uplift at Cape Charles, Virginia. The drill cores from 744 to 823 m depth...diagnostic indicator for confirmation of suspected impact structures. Keywords: Phase transition, anatase |  | Biren, M. B., Wartho, J.âA., Soest, M. C., Hodges, K. V., Cathey, H., Glass, B. P., Koeberl, C., Horton, J. W., Hale, W. (2019) (UâTh)/He zircon dating of Chesapeake Bay distal impact ejecta from ODP site 1073. Meteoritics & Planetary Science, 54 (8) 1840-1852 doi:10.1111/maps.13316 | Journal (article/letter/editorial) | | 1111/maps.13316 (U-Th)/He zircon dating of Chesapeake Bay distal impact ejecta from ODP site 1073 M...Arizona State University, Tempe, Arizona 85287, USA 2 GEOMAR Helmholtz Centre for Ocean Research Kiel...Arizona State University, Tempe, Arizona 84287, USA 4 Central Analytical Research Facility, Queensland...University of Delaware, Newark, Delaware 19716, USA 6 Department of Lithospheric Research, University...Geological Survey, 926A National Center, Reston, Virginia 20192, USA 9 IODP Core Repository, Bremen D-28359, Germany |  | | Report (issue) | | Hampton Roads Planning District Commis:;;ion, Virginia Department of Environmental Quality, and National...Studies of the Chesapeake Bay Impact StructureThe USGS-NASA Langley Corehole, Hampton, Virginia, and Related...for the impact of an asteroid or comet nucleus near the mouth of the present Chesapeake Bay The grain...sequential stages in the formation of the Chesapeake Bay impact crater as presented in chapter A of this... Studies of the Chesapeake Bay Impact StructureThe USGS-NASA Langley Corehole, Hampton, Virginia, and Related |  | | Journal (article/letter/editorial) | | Establishing the link between the Chesapeake Bay impact structure and the North American tektite strewn...accepted 21 December 2005) AbstractâThe Chesapeake Bay impact structure, which is about 35 Ma old, has previously...fill breccias, and post-impact sediments of the Chesapeake Bay impact structure. The unconsolidated sediments...plus an as-yet undetermined component. The post-impact sediments of the Chickahominy formation have slightly...Popigai impact crater, although they have identical ages within 2Ï errors. The Chesapeake Bay structure |  | | Journal (article/letter/editorial) | | clasts from impact breccia of the Eyreville B drill core, Chesapeake Bay impact structure, USA Katerina...accepted 16 January 2011) AbstractâThe Chesapeake Bay impact structure, approximately 85 km in diameter, has...has been drilled in 2005â2006 at Eyreville (Virginia, USA), to a total depth of 1766 m. In the drill cores...as melt particles, are most abundant in suevitic impact breccia section (1397â1451 m depth). Shocked quartz...report on the investigations of 40 samples from the impact breccia section. A total of more than 27,000 quartz |  | BARTOSOVA, Katerina, HECHT, Lutz, KOEBERL, Christian, LIBOWITZKY, Eugen, REIMOLD, Wolf Uwe (2011) Melt in the impact breccias from the Eyreville drill cores, Chesapeake Bay impact structure, USA. Meteoritics & Planetary Science, 46 (3) 396-430 doi:10.1111/j.1945-5100.2011.01162.x | Journal (article/letter/editorial) | | Melt in the impact breccias from the Eyreville drill cores, Chesapeake Bay impact structure, USA Katerina...AbstractâThe center of the 35.3 Ma Chesapeake Bay impact structure (85 km diameter) was drilled during...project. The Eyreville drill cores include polymict impact breccias and associated rocks (1397â1551 m depth)...rocks, may be preserved in impactites of some large impact structures that formed in volatile-rich targets...INTRODUCTION Chesapeake Bay Impact Structure, Eyreville Drill Cores The Chesapeake Bay impact structure is located |  | | Journal (article/letter/editorial) | | tridymite in clast-rich impact melt rock from the Chesapeake Bay impact structure John C. JaCkson,* J. Wright...S. Geological Survey, National Center, Reston, Virginia 20192, U.S.A. aBstraCt X-ray diffraction and...clast-rich impact melt rock from the Eyreville B drill core in the Chesapeake Bay impact structure. The monoclinic...appear to be restricted to the thickest clast-rich impact melt body in the core at 1402.02â1407.49 m depth...paramorph after tridymite, cristobalite, Chesapeake Bay impact structure introduCtion laminated and consists |  | Assis Fernandes, V., Hopp, J., Schwarz, W.H., Fritz, J.P., Trieloff, M., Povenmire, H. (2019) 40Ar-39Ar step heating ages of North American tektites and of impact melt rock samples from the Chesapeake Bay impact structure. Geochimica et Cosmochimica Acta, 255. 289-308 doi:10.1016/j.gca.2019.03.004 | Journal (article/letter/editorial) | | American tektites and of impact melt rock samples from the Chesapeake Bay impact structure 40 V. Assis Fernandes...American tektites and of impact melt rock samples from the Chesapeake Bay impact structure, Geochimica et Cosmochimica...American tektites and of impact melt rock samples from the Chesapeake Bay impact structure V. Assis Fernandes1...samples extracted at different depths from clast-rich impact melt rocks (CB-W61 and CB-W84) recovered by the...about 9 km from the centre of the Chesapeake Bay impact structure. Radiometric age determination on both |  | Magna, T., Deutsch, A., Mezger, K., SkĂĄla, R., Seitz, H.-M., Mizera, J., Ćanda, 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) | | elsevier.com/locate/gca Lithium in tektites and impact glasses: Implications for sources, histories and...australite, Ivory Coast tektites and bediasites), impact-related glasses (Libyan Desert Glass, zhamanshinites...fragment embedded in the suevite from the Ries impact crater and sedimentary materials in order to test...susceptibility of Li to fractionation during hypervelocity impact events and to de-convolve links to their potential...to 26.0&) but individual groups of tektites and impact glasses have distinctive Li compositions. Most |  | | Journal (article/letter/editorial) | | 17101, USA 2 Geophysical Laboratory, Carnegie Institution for Science, Washington, DC 20005, USA 3 Department...State University, Raleigh, North Carolina 27695, USA 4 Florida Museum of Natural History, University of...of Florida, Gainesville, Florida 32611, USA * Corresponding author. E-mail: mmeyer@harrisburgu.edu (Received...may be derived from a nearby previously unknown impact event; however, more material and sites are required...the Greek word for âmoltenâ) are formed by the impact melting resulting from high-energy bolide impacts |  | | Journal (article/letter/editorial) | | Frontiers An appraisal of the ages of terrestrial impact structures F. Jourdan a,â, P.R. Renne b,c, W.U...Geochronology Center, 2455 Ridge Rd., Berkeley, CA94709, USA c Department of Earth and Planetary Science, University...University of California, Berkeley, CA94720, USA d Museum fĂŒr Naturkunde - Leibniz-Institute at Humboldt...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 conïŹrmed impact structures known on Earth (e.g., http://www.unb |  | | Journal (issue) | | Chevkinite-(Ce), a Rare-Earth Titanosilicate from Northampton County, Pennsylvania Page 3 Rocks and Waterâ The...for mineralogy geeks. If the details of mineral structure are not your cup of tea, stick around for the...Chevkinite-(Ce), a Rare-Earth Titanosilicate from Northampton County, Pennsylvania Some Rare-Earth Minerals in...Williams Hall, Lehigh University, Bethlehem, Northampton County, in 1966 (Figure 1). Williams Hall is where...occurrence at what became the Constitution Drive, Lehigh County, locality shortly thereafter [Smith, 1967].) 1 |  | | Journal (article/letter/editorial) | | Earthâs Impact Events Through Geologic Time: A List of Recommended Ages for Terrestrial Impact Structures...list of recommended ages for proven terrestrial impact structures (n = 200) and deposits (n = 46) sourced...literature. High-precision impact ages can be used to (1) reconstruct and quantify the impact flux in the inner...accreted on Earth through geologic time; (2) utilize impact ejecta as event markers in the stratigraphic record...and hypotheses of synchronous double or multiple impact events in the terrestrial record; (4) assess the |  | | Journal (article/letter/editorial) | | de/journals/chemerd INVITED REVIEW Upper Eocene Impact Ejecta/Spherule Layers in Marine Sediments B. P...Department, University of Delaware, Newark, Delaware USA Received: 28. 3. 2002 · Accepted in revised form:...northwestern Atlantic Ocean and on Barbados. Unmelted impact ejecta (including shocked quartz and feldspar with...stishovite, and reidite, a high-pressure polymorph of zircon) have been found associated with this microtektite...is now accepted that they belong to a different impact event. The major crystalline phase in the cpx spherules |  | Erickson, Timmons M., Pearce, Mark A., Reddy, Steven M., Timms, Nicholas E., Cavosie, Aaron J., Bourdet, Julien, Rickard, William D. A., Nemchin, Alexander A. (2017) Microstructural constraints on the mechanisms of the transformation to reidite in naturally shocked zircon. Contributions to Mineralogy and Petrology, 172 (1) doi:10.1007/s00410-016-1322-0 | Journal (article/letter/editorial) | | transformation to reidite in naturally shocked zircon Timmons M. Erickson1 · Mark A. Pearce2 · Steven...Berlin Heidelberg 2017 Abstract Zircon (ZrSiO4) is used to study impact structures because it responds...manners. One such phenomenon is the transformation of zircon to the high-pressure polymorph, reidite. This study...naturally shocked zircon grains. Reidite has been characterized in 32 shocked zircon grains (shocked to...53706, USA 4 Department of Geology, University of Puerto RicoMayagĂŒez, MayagĂŒez, PR 00681, USA 5 CSIRO |  | HervĂ©, GwenaĂ«l, Gilder, Stuart A., Marion, Cassandra L., Osinski, Gordon R., Pohl, Jean, Petersen, Nikolai, Sylvester, Paul J. (2015) Paleomagnetic and rock magnetic study of the Mistastin Lake impact structure (Labrador, Canada): Implications for geomagnetic perturbation and shock effects. Earth and Planetary Science Letters, 417. 151-163 doi:10.1016/j.epsl.2015.02.011 | Journal (article/letter/editorial) | | rock magnetic study of the Mistastin Lake impact structure (Labrador, Canada): Implications for geomagnetic...University, 125 Science Building, Lubbock, TX 79409-1053, USA b a r t i c l e i n f o Article history: Received...online 9 March 2015 Editor: J. Brodholt Keywords: impact crater paleomagnetism shock paleointensity a b...Mistastin Lake (Labrador, Canada) meteorite impact structure in order to investigate whether energy from...expected direction for North America at the time of impact. Paleointensity results from seven samples meeting |  | | Book | | Impact Studies Series Editor: Christian Koeberl Editorial Board Eric Buffetaut (CNRS, Paris , France)...Virgil 1. Sharpton (University of Alaska, Fairbanks, USA) Springer Berlin Heidelberg New York Hong Kong...Reimold The Chesapeake Bay Crater Geology and Geophysics of a Late Eocene Submarine Impact Structure With...Survey 384 Woods Hole Road Woods Hole, MA 02543-1598 USA Email: wpoag@usgs.gov DR. DR. CHRISTIAN KOEBERL...David J. Roddy (1932-2002), one of the pioneers of impact cratering studies. For 40 years, Dave was a driving |  | | Journal (article/letter/editorial) | | Copyright © 2001 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/01 $20.00 â«č .00 Pergamon...S0016-7037(01)00548-8 UâPb isotopic study of relict zircon inclusions recovered from Muong Nong-type tektites...University of Delaware, Newark, Delaware 19716, USA 3 Institute of Geochemistry, University of Vienna...compositions of U and Pb were determined for relict zircon inclusions recovered from Muong Nong-type tektites...complete resetting of the isotopic system during the impact event and exchange with Pb from the target sediments |  | Greshake, Ansgar, Wirth, Richard, Fritz, Jörg, Jakubowski, Tomasz, Böttger, Ute (2018) Mullite in Libyan Desert Glass: Evidence for high-temperature/low-pressure formation. Meteoritics & Planetary Science, 53 (3) 467-481 doi:10.1111/maps.13030 | Journal (article/letter/editorial) | | or sand very likely during an asteroid or comet impact onto Earth. While melting and ejection occurred... such as quartz, cristobalite, lechatelierite, zircon, baddeleyite, rutile, anatase, corundum, Al-rich...isotopic signature providing strong evidence for an impact origin of the glass (e.g., Murali et al. 1989;...granulitic material is an additional indication for an impact origin of LDG (Greshake et al. 2010). According...from the Gilf Kebir Plateau during an asteroid impact (Barrat et al. 1997; Kleinmann et al. 2001; Schaaf |  | Ackerman, LukĂĄĆĄ, SkĂĄla, Roman, KĆĂĆŸovĂĄ, Ć ĂĄrka, ĆœĂĄk, Karel, Magna, TomĂĄĆĄ (2019) The quest for an extraterrestrial component in Muong Nong-type and splash-form Australasian tektites from Laos using highly siderophile elements and Re-Os isotope systematics. Geochimica et Cosmochimica Acta, 252. 179-189 doi:10.1016/j.gca.2019.03.009 | Journal (article/letter/editorial) | | Mineralogy and Mineral Resources, Faculty of Science, Charles University, Albertov 6, CZ-128 43 Prague 2, Czech...challenging to establish direct links between these impact-related materials and their possible extraterrestrial...test to distinguish continental versus seawater impact scenario. In the absence of any speciïŹc low-Os...target, a particular process of Os loss following impact is required. We envisage a scenario where evaporative...bediasites vs. Chesapeake Bay; Deutsch and Koeberl, 2006, or Ivory Coast tektites vs. Bosumtwi impact structure; |  | | Journal (article/letter/editorial) | | 562â565, 2002 Reidite: An impact-produced high-pressure polymorph of zircon found in marine sediments...polymorph of zircon with the scheelite structure. It has been found in an upper Eocene impact ejecta layer...shock-metamorphosed zircons. It is associated with impact glass (tektites), shocked quartz and feldspar with...fluoresce. In index oil in transmitted light, shocked zircon grains consisting almost entirely of reidite are...While documenting shock effects in zircon grains recovered from an impact ejecta layer found in upper Eocene |  | ANHAEUSSER, C. R., STETTLER, E., GIBSON, R. L., COOPER, G. R. J. (2010) A POSSIBLE MESOARCHAEAN IMPACT STRUCTURE AT SETLAGOLE, NORTH WEST PROVINCE, SOUTH AFRICA: AEROMAGNETIC AND FIELD EVIDENCE. South African Journal of Geology, 113 (4) 413-436 doi:10.2113/gssajg.113.4.413 | Journal (article/letter/editorial) | | R.J. COOPER 413 A POSSIBLE MESOARCHAEAN IMPACT STRUCTURE AT SETLAGOLE, NORTH WEST PROVINCE, SOUTH AFRICA:...clasts may represent chloritized mud clasts or impact melt clasts. Geochemical data on these clasts and...debris flow in a marine .setting triggered by an impact tsunami or resurge. Subsequent faulting may have...available data. Introduction Confirmed meteorite impact structures on the African continent are relatively...2113/gssajg.ll3.4.413 414 POSSIBLE MESOARCHAEAN IMPACT STRUCTURE AT SETLAGOLE, SOUTH AFRICA I 2 O + I Giwiitold |  | | Journal (article/letter/editorial) | | com/loi/taje20 Ediacaran ice-rafting and coeval asteroid impact, South Australia: insights into the terminal Proterozoic...(2010) Ediacaran ice-rafting and coeval asteroid impact, South Australia: insights into the terminal Proterozoic...(859â869) Ediacaran ice-rafting and coeval asteroid impact, South Australia: insights into the terminal Proterozoic...ejecta related to the 90 km diameter Acraman impact structure in the Mesoproterozoic Gawler Range Volcanics...Mudstone 4500 km northwest of the impact site. The Acraman impact took place at a low paleolatitude (*12 |
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