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Tesi sul tema "Meteorites Analysis"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 gennaio 2023

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1

Malvin, Daniel Joshua 1959. "EXPERIMENTAL PARTITIONING OF SIDEROPHILE ELEMENTS IN THE SYSTEMS IRON - NICKEL - SULFUR - PHOSPHORUS AND FORSTERITE - ANORTHITE - DIOPSIDE." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276501.

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Partition coefficients in the Fe-Ni-S-P system measured utilizing "static" equilibration experiments cannot be reconciled with the results of "dynamic" experiments which mimic fractional crystallization. New tests of the "static" experiments demonstrate that they yield reliable equilibrium Ni, P and Ge partition coefficients. Partition coefficients in the Fe-Ni-S-P system are well matched by interpolation between the Fe-Ni-S and Fe-Ni-P subsystems. The crystal/liquid partitioning of Ga and Ge has been measured experimentally between forsterite, diopside, anorthite and spinel and melts in the f

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2

Shober, Patrick M. "Meteoroid Orbital Analysis: Connecting Meteorites and Asteroids." Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/86776.

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Abstract (sommario):

Since people started studying meteorites, scientists have attempted to better understand the parent bodies they originated from. Although, this is difficult because, unlike a terrestrial rock, you do not have access to the outcrop. The Near-Earth Object (NEO) population is the source of all meteorites found on Earth. Using the orbital data collected from the Desert Fireball Network, my work clarified the connections between meteorites and their source NEOs. I primarily did this analysis by employing rigorous numerical modeling techniques to constrain the dynamical and physical properties of as

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3

Hontsova, S. S., and E. M. Maksimova. "X-Ray analysis of meteorite." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39427.

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Meteorites are one of the most accessible objects of extraterrestrial matter. Therefore the study of the structural features and physical properties of crystals of meteorites can provide information about the formation of the crystal structure of matter in extraterrestrial conditions.

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4

Spitz, Anna Hargrave, and Anna Hargrave Spitz. "Trace element analysis of ureilite meteorites and implications for their petrogenesis." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185743.

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Ureilite meteorites are the second largest class of achondrite meteorites. They are perhaps the most enigmatic of all classes of meteorites and the dilemma over how they were formed has perplexed the meteoritic community for over a decade. This research was undertaken to illuminate the details of the petrogenesis of ureilites through the collection of trace element data. The results presented here indicate that many of the petrogenesis hypotheses promoted are no longer tenable and that the available data on ureilites are not sufficient to unravel the mystery of their origin. This dissertation

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5

Daly, Luke. "Understanding Our Protoplanetary Disk by Chemical Analysis of Components in Meteorites." Thesis, Curtin University, 2017. http://hdl.handle.net/20.500.11937/59045.

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This thesis has explored the capability of novel high resolution in situ analyses such as Synchrotron radiation, atom probe microscopy and transmission kikuchi diffraction in the analyses of primitive meteorites. Crystallographic, geochemical and isotopic data extracted using these techniques from refractory metal nuggets in primitive meteorites has implications for our understanding of how these grains formed, particle migration in the protoplanetary disk, and a suggestion that refractory metal nuggets may have a pre-solar origin.

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6

Armstrong, Katherine. "Chemical and Petrographic Survey of Large, Igneous-Textured Inclusions in Ordinary Chondrites." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/2070.

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Our inventory of material from the early solar system includes large, igneous-textured inclusions in O chondrites, whose origin and relationship to their host meteorite is unclear. These inclusions occur in approximately 4% of O chondrites, and are mineralogically, petrographically, and chemically diverse. Petrographic and chemical data from 29 inclusions from 23 host meteorites were collected with optical light and scanning electron microscopy, allowing for the determination of major phase modal abundance and major element bulk chemistry. No correlation between any inclusion property and host

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7

Schepker, Kristy Lee. "Complex Thermal Histories of L Melt Breccias NWA 5964 and NWA 6580." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1835.

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To constrain the thermal histories of two complex L chondrite melt breccia samples (NWA 5964 and NWA 6580) we compare textures and chemical compositions of metal and sulfide to L melt rock (NWA 6454 and NWA 6579) and strongly shocked (shock stage S6) (NWA 4860) samples. The inferred thermal histories can be used to evaluate formation settings on the L chondrite parent body. The L melt samples probably formed as different melt units within warm but largely unmelted material relatively close to the surface of the parent body, and the same is true for the S6 sample, except it experienced less mel

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8

Maksimova, E. M., S. S. Hontsova, and I. A. Nauhatsky. "XRD Analysis of Crystal Structure of the Fragment of the Campo Del Cielo Meteorite." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40668.

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Abstract (sommario):

Meteorites are the key, and often the only source of information about the pre-planetary and planetary early history of our solar system. Currently, the following classification of meteorites: stone (aerolites) stoney-iron (siderolites) and iron (siderites), depending on the ratio of silicate minerals in them, and nickel-iron.

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9

Hays, Naydene Richelle. "Geochronology of Shergottite Meteorites: Using LA-MC-ICP-MS Analysis to Examine U-Th-Pb Systematics of Baddeleyites and Phosphates." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/202753.

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I present in-situ analysis of U-Pb systematics in baddeleyite and whitlockite grains from a suite of Martian shergottites. 9 baddeleyite grains (5 from basaltic shergottite NWA 2986 and 4 from olivine-phyric shergottite RBT 04262) were analyzed by LA-MC-ICP-MS. Despite low uranium and radiogenic lead concentrations , maximum ages could be determined for both samples: 187 ± 50 to 1236 ± 430 for NWA 2986 and 100 ± 9 to 526 ± 48 for RBT 04262. The same analytical procedures were used for whitlockites in NWA 2986, ALHA 77005, EETA 79001, NWA 2646 and LAR 06319. As with the baddeleyite analyses

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10

Joy, Katherine H. "Topics in lunar evolution using sample analysis and remotely sensed information." Thesis, University College London (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606784.

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11

Bäckström, Ann. "Rock damage caused by underground excavation and meteorite impacts." Doctoral thesis, KTH, Teknisk geologi och geofysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4824.

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The intent of this thesis is to contribute to the understanding of the origin of fractures in rock. The man-made fracturing from engineering activities in crystalline rock as well as the fracturing induced by the natural process of meteorite impacts is studied by means of various characterization methods. In contrast to engineering induced rock fracturing, where the goal usually is to minimize rock damage, meteorite impacts cause abundant fracturing in the surrounding bedrock. In a rock mass the interactions of fractures on the microscopic scale (mm-cm scale) influence fractures on the mesosco

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12

Kloberdanz, Christine Marie. "Geochemical analysis of the Monturaqui Impact Crater, Chile." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/835.

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13

White, Lee Francis. "Combined nanostructural and isotopic analysis of baddeleyite : new horizons in solar system chronology." Thesis, University of Portsmouth, 2017. https://researchportal.port.ac.uk/portal/en/theses/combined-nanostructural-and-isotopic-analysis-of-baddeleyite(80e4ee98-4090-4801-90f3-ce122bc9270a).html.

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Baddeleyite (monoclinic-ZrO2) is an exceptionally common accessory phase in many of the mafic and ultra-mafic rocks prevalent throughout the Solar System. This study presents the first ground-truthing efforts in the development of this robust mineral into a diagnostic indicator, discrete barometer, and precise U-Pb geochronometer of shock metamorphism by combining electron backscatter diffraction and atom probe tomography to generate unique chemical and structural datasets. Microstructural analysis of variably shocked baddeleyite grains around the Sudbury impact structure (Ontario, Canada) hig

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14

Johnson, Reuben Carl. "Wetumpka impact structure modeled as the exposed remains of a large shallow water marine-target impact crater for analysis and interpretation of two drill cores taken from near the structure's geographic center." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/JOHNSON_REUBEN_28.pdf.

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15

Huson, Sarah Ann. "Quantitative analysis of the deformational history and timing of the Sierra Madera impact structure, West Texas." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Spring2009/s_huson_043009.pdf.

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16

PEREIRA, JEAN MICHEL DA SILVA. "METEORITE ANALYSIS BY MASS SPECTROMETRY (252CF-PDMS) AND BY X-RAY AND INFRARED SPECTROSCOPIES (XRD, XRF, PIXE, FTIR AND RAMAN)." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25645@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A pesquisa em meteoritos é de extrema importância para o entendimento de certos processos astrofísicos, pois estes objetos trazem em sua estrutura informações fundamentais para a compreensão da evolução do Sistema Solar. Neste trabalho, são estudadas amostras dos meteoritos Isna, Allende e Zagami. As técnicas analíticas utilizadas foram: espectrometria de massa (252Cf-PDMS-TOF), espectroscopia vibracional (FTIR-MIR e Raman) e espectroscopias de raios X (XRF, XRD e PIXE). Além

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17

Minde, Peder. "Clast analysis of potential resurge deposits as part of the Vakkejokk Breccia in the Torneträsk area, northern Sweden - a proposed impact ejecta layer." Thesis, Stockholms universitet, Institutionen för geologiska vetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-143782.

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In the northern part of Swedish Caledonides, north of Lake Torneträsk is a 7 km long exposure of a breccia layer. The layer thins westwards and eastwards from the central part where it is up to 27 m thick. It is called the Vakkejokk Breccia after the type section. The breccia has been described in literature since about a century, but its origin is enigmatic. The breccia layer is since the summer of 2012 investigated by three geologists specialized in impact craters, Paleozoic sediments, and the Caledonian orogeny. They put forward evidence for the breccia being formed by a hypervelocity impac

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18

Harper, Charles L. "On the nature of time in cosmological perspective : a comparative study of the weak and strong interaction chronometries via an analysis of high resolution ⁸⁷Rb-β-̄⁸⁷Sr, ²³⁵/²³⁸U-α-²⁰⁷/⁷⁰⁶Pb and ¹⁴²Sm-α-¹⁴³Nd isotopic age determinations of meteoritic, lunar and geological samples". Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670359.

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19

Noun, Manale. "Interaction agrégats-surface. Spectrométrie de masse par temps de vol et application analytique à des études sur des médicaments et sur la météorite Paris." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00906791.

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Le Lebanese Atomic Energy Commission (LAEC) poursuit un programme de développement des techniques analytiques pour compléter l'analyse par faisceau d'ions (IBA). Il a décidé de s'équiper d'un spectromètre de masse couplée à l'imagerie 2D puis récemment 3D avec l'acquisition d'un spectromètre de masse IONTOF V™ équipé de deux colonnes ioniques délivrant des faisceaux d'agrégats de bismuth et d'argon. Dans ce cadre, mon sujet de thèse a porté sur l'optimisation de l'instrument nouvellement acquis pour l'analyse d'échantillons contenant des composés organiques. Les premiers sujets de recherche so

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20

Grant, Stephen Ian. "Medium frequency radar studies of meteors." 2003. http://thesis.library.adelaide.edu.au/public/adt-SUA20040224.152811.

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Abstract (sommario):

"July 2003." Includes bibliographical references (leaves 459-484) Electronic publication; full text available in PDF format; abstract in HTML format. Details the application of a medium frequency Doppler radar to observations of meteorites entering the Earth's atmosphere. Techniques were developed that verified system performance was to specification Electronic reproduction.[Australia] :Australian Digital Theses Program,2001. xx, 485 leaves : ill. ; 30 cm.

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21

Schilk, Alan J. "Chemical and statistical analyses of chondrules from the Mokoia (CV3) meteorite." Thesis, 1991. http://hdl.handle.net/1957/37445.

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Nearly 100 chondrules were extracted from -8.6g of the Mokoia (CV3) meteorite and have been analyzed by sequential instrumental neutron activation analysis (INAA). The resulting data were utilized in a comprehensive statistical characterization of these objects and, unlike similar investigations, virtually no loss of relevant data was incurred due to the use of inadequate or inappropriate software. Mass and elemental frequency distributions, correlation analysis and sorting coefficients support a "nebular" setting for chondrule genesis, and a scenario in which interstellar "dust-balls" (= chon

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22

Milstein, Randall L. "The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme /." 1994. http://hdl.handle.net/1957/8989.

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23

Yin, Yu-Sheng, and 殷裕勝. "Characterization and Surface Analysis of the Antiques from Han Dynasty, Nan-Dan Iron Meteorite, and Microcapsules." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95106199476818812787.

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24

Chen, Hsin-Wei, and 陳心維. "In situ Titanium Isotopic Composition Analysis of the Refractory Inclusions in the Allende Meteorite by Laser Ablation Inductive Couple Plasma Mass Spectrometry (LA-ICPMS)." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/19779048204037832903.

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25

Chen, Hsin-Wei. "In situ Titanium Isotopic Composition Analysis of the Refractory Inclusions in the Allende Meteorite by Laser Ablation Inductive Couple Plasma Mass Spectrometry (LA-ICPMS)." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2107200816415200.

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26

Meillieux, Damien Yves Justin. "Wellbore seismic and core sample measurement analysis integrated geophysical study of the Lake Bosumtwi impact structure /." Master's thesis, 2009. http://hdl.handle.net/10048/427.

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Thesis (M. Sc.)--University of Alberta, 2009.<br>Title from pdf file main screen (viewed on July 16, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Geophysics, Department of Physics, University of Alberta." Includes bibliographical references.

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