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The study of organic-rich carbonate-containing shales after heating is an important task for the effective application of in-situ thermal kerogen conversion technologies implemented for these types of rocks. This research was conducted to study changes in the …
openalex
Tagir Karamov, Viktoria White, Elizaveta Idrisova, Елена Козлова 等
2022-07-09
置信度 0.72
KerogenCarbonateOil shaleMineralogyCarbonate minerals
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Abstract— The 24 km diameter Ries impact crater in southern Germany is one of the most studied impact structures on Earth. The Ries impactor struck a Triassic to Upper Jurassic sedimentary sequence overlying Hercynian crystalline basement. At the time of impac…
openalex
G. Graup
1999-05-01
置信度 0.72
CarbonateGeologySilicateBrecciaImpact crater
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Abstract The Chang'e‐5 (CE‐5) materials represent the youngest returned lunar samples. We performed a detailed Raman spectroscopic survey (1259‐point Raman modal analysis) to evaluate the mineralogical characteristics of CE‐5 soils, constraining the source mat…
openalex
Haijun Cao, Chen Wang, Jian Chen, Xiaochao Che 等
2022-07-06
置信度 0.72
BasaltRegolithGeologyMaficMineralogy
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Abstract— An attempt was made to detect a meteoritic component in both crater‐fill (fallback) impact breccias and fallout suevites (outside the crater rim) at the Bosumtwi impact structure in Ghana. Thus far, the only clear indication for an extraterrestrial c…
openalex
Iain McDonald, Bernhard Peucker‐Ehrenbrink, L. Coney, L. Ferrière 等
2007-05-01
置信度 0.72
Impact craterBrecciaPlatinum groupGeologyExtraterrestrial life
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Abstract We investigated the petrologic, geochemical, and spectral parameters that relate to the type and degree of aqueous alteration in nine CM chondrites and one CI (Ivuna) carbonaceous chondrite. Our underlying hypothesis is that the position and shape of …
openalex
D. Takir, Joshua P. Emery, H. Y. McSween, C. A. Hibbitts 等
2013-08-12
置信度 0.72
ChondriteMeteoriteAsteroidCarbonaceous chondriteParent body
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Abstract Magnetic images of Chelyabinsk meteorite's (fragment F1 removed from Chebarkul lake) thin section have been unraveled by a magnetic scanning system from Youngwood Science and Engineering (YSE) capable of resolving magnetic anomalies down to 10−3 mT ra…
openalex
L. Nabelek, Martin Mazanec, Šimon Kdýr, G. Kletetschka
2015-05-08
置信度 0.72
MeteoriteRemanenceDemagnetizing fieldMagnetic fieldSaturation (graph theory)
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Abstract The timing and extent to which the initial interstellar material was thermally processed provide fundamental constraints for models of the formation and early evolution of the solar protoplanetary disk. We argue that the nonsolar (solar Δ 17 O ≈ −29‰)…
openalex
C. M. O'd. Alexander, L. R. Nittler, J. Davidson, F. J. Ciesla
2017-06-06
置信度 0.72
Protoplanetary diskInterplanetary dust cloudPhysicsFormation and evolution of the Solar SystemAstrobiology
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Abstract— In the framework of international planetary exploration programs, several space missions are planned to search for organics and bio-signatures on Mars. Previous attempts have not detected any organic compounds in the Martian regolith. It is therefore…
openalex
I. L. ten Kate, James Garry, Z. Peeters, R. C. Quinn 等
2005-08-01
置信度 0.72
Mars Exploration ProgramRegolithMartianAstrobiologyMartian surface
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Abstract— Zag is an H3‐6 chondrite regolith breccia within which we have studied 14 halite grains ≤3 mm. The purity of the associated NaCl‐H2O brine is implied by freezing characteristics of fluid inclusions in the halite and EPMA analyses together with a lack…
openalex
J. C. Bridges, DA Banks, Martin Smith, M. M. Grady
2004-05-01
置信度 0.72
HaliteEvaporiteGeologyGeochemistryBreccia
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Abstract— For the ∼65 km sized Kara impact structure close to the polar Ural, we report an age of 70.3 ± 2.2 Ma (2s̀), defined by the mean of 40Ar‐39Ar plateau ages for three glassy or crystalline impact melt rocks cleaned from mineral and rock clasts. The fin…
openalex
M. Trieloff, A. Deutsch, E. K. Jeßberger
1998-03-01
置信度 0.72
Impact structurePlateau (mathematics)GeologyRecoilClastic rock
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A unique dmitryivanovite (CaAl_2O_4) -dominant Ca-, \nAl-rich refractory inclusion (CAI), named “Cracked Egg” by [1], was \nobserved in the NWA 1934 CV3 carbonaceous chondrite. During our \nnano-mineralogy investigation of this CAI, Cl-bearing mayenite, \nCa_(…
openalex
Chi Ma, J. R. Beckett, George R. Rossman, Chang–Jin Ma 等
2010-07-01
置信度 0.72
Murchison meteoriteMineralMeteoriteElectron microprobeChromium
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Abstract– The distribution and isotopic and enantiomeric compositions of amino acids found in three distinct fragments of the Tagish Lake C2‐type carbonaceous chondrite were investigated via liquid chromatography with fluorescence detection and time‐of‐flight …
openalex
D. P. Glavin, Jamie E. Elsila, Aaron S. Burton, Michael P. Callahan 等
2012-07-31
置信度 0.72
MeteoriteAmino acidEnantiomerChemistryMurchison meteorite
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Abstract— Understanding the nature and composition of larger extraterrestrial bodies that may collide with the Earth is important. One source of information lies in the record of ancient impact craters, some of which have yielded chemical information as to the…
openalex
A. T. Kearsley, G. A. Graham, Tony McDonnell, P. A. Bland 等
2004-02-01
置信度 0.72
Impact craterHypervelocityEjectaBrecciaGeology
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The N and C abundances and isotopic compositions of acid-insoluble carbonaceous material in thirteen primitive chondrites (five unequilibrated ordinary chondrites, three CM chondrites, three enstatite chondrites, a CI chondrite and a CR chondrite) have been me…
openalex
C. M. O'd. Alexander, S. S. Russell, J. W. Arden, R. D. Ash 等
1998-07-01
置信度 0.72
ChondriteEnstatiteParent bodyCarbonaceous chondriteMeteorite
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Abstract– Even in the absence of any biosphere on Mars, organic molecules, including polycyclic aromatic hydrocarbons (PAHs), are expected on its surface due to delivery by comets and meteorites of extraterrestrial organics synthesized by astrochemistry, or pe…
openalex
Lewis Dartnell, Manish Patel, Michael C. Storrie‐Lombardi, John M. Ward 等
2012-05-01
置信度 0.72
MartianMartian surfaceAstrobiologyChemistryMars Exploration Program
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Abstract— We carried out a petrologic and instrumental neutron activation analysis (INAA) whole chondrite compositional study of Grosvenor Mountains (GRO) 95577. GRO 95577 has many petrological similarities to the CR chondrites. Although the INAA data show pat…
openalex
M. K. Weisberg, Heinz Huber
2007-09-01
置信度 0.72
ChondruleChondriteParent bodyOrdinary chondriteGeology
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This study presents comparative geochemical, microbiological and molecular analyses of Greenland GISP2 ice core samples representing different depths, ages, deposition climates, in situ temperatures, and gas and ionic compositions. Our goal was to determine wh…
openalex
Vanya Miteva, Catherine E. Teacher, Todd Sowers, Jean E. Brenchley
2008-12-31
置信度 0.72
Ice coreBiologyArchaeaLibraryProteobacteria
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Abstract— An improvement in the velocity resolution and quality of Mössbauer spectra has been applied to a group of ordinary chondrites. This improvement permitted us to carry out a more detailed study of the iron bearing phases in these samples than has previ…
openalex
М. И. Оштрах, E. V. Petrova, V. I. Grokhovsky, V. A. Semionkin
2008-05-01
置信度 0.72
ChondriteTroilitePyrrhotiteMössbauer spectroscopyOlivine
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Abstract— Silica-rich late-stage crystallization pockets in the Martian meteorite Northwest Africa (NWA) 856 were investigated by transmission electron microscopy (TEM). The pockets occur as wedges between maskelynite laths or between maskelynite and pyroxene.…
openalex
Hugues Leroux, Patrick Cordier
2006-06-01
置信度 0.72
CristobaliteTroiliteCrystallizationIlmeniteGeology
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Abstract The oldest known large bolide impacts onto Earth are represented by approximately 3.47–3.2 Ga old Archean spherule layers of the Barberton Greenstone Belt (BGB) in South Africa and the Pilbara craton in West Australia. These layers were recognized as …
openalex
T. Mohr‐Westheide, A. Greshake, Richard Wirth, W. U. Reimold
2018-05-06
置信度 0.72
Platinum groupArcheanGreenstone beltGeologyTransmission electron microscopy
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Abstract We present the first reconstruction of the micrometeorite flux to Earth in the Silurian Period. We searched 321 kg of condensed, marine limestone from the Late Silurian Cellon section, southern Austria, for refractory chrome‐spinel grains from microme…
openalex
Ellinor Martin, Birger Schmitz, H.P. Schönlaub
2018-07-31
置信度 0.72
OrdovicianChondriteGeologyParent bodySpinel
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Abstract The Younger Dryas impact hypothesis suggests that multiple airbursts or extraterrestrial impacts occurring at the end of the Allerød interstadial resulted in the Younger Dryas cold period. So far, no reproducible, diagnostic evidence has, however, bee…
openalex
Annelies van Hoesel, Wim Z. Hoek, G. M. Pennock, Knut Kaiser 等
2015-03-01
置信度 0.72
Younger DryasGeologyQuartzMineralogyGeochemistry
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Abstract— Gorter and Glikson (2000) proposed that the Fohn‐1 structure in the Timor Sea north of Australia probably is an impact structure. Examination of their evidence reveals that it is almost impossible to confirm any of their conclusions, as the authors d…
openalex
W. U. Reimold, Christian Koeberl, C. Wright, Iain McDonald
2001-05-01
置信度 0.72
BrecciaGeologyImpact craterMetamorphismStructural basin
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Abstract— Phosphates in martian meteorites are important carriers of trace elements, although, they are volumetrically minor minerals. PO4 also has potential as a biomarker for life on Mars. Here, we report measurements of the U‐Th‐Pb systematics of phosphates…
openalex
Kentaro Terada, T. Monde, Yuji Sano
2003-11-01
置信度 0.72
MeteoriteIsochronPhosphate mineralsMartianParent body
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Abstract– The ion microprobe is the only technique capable of determining high‐precision stable isotope ratios in individual tiny extraterrestrial particles (≤100 μm in diameter), but these small samples present special analytical challenges. We produced a new…
openalex
D. Nakashima, T. Ushikubo, Rudraswami N. GOWDA, N. T. Kita 等
2011-05-31
置信度 0.72
ChondruleChondriteIsotopes of oxygenPorphyriticMicroprobe
-
We report a huge organic diversity in the Tissint Mars meteorite and the sampling of several mineralogical lithologies, which revealed that the organic molecules were nonuniformly distributed in functionality and abundance. The range of organics in Tissint met…
openalex
Philippe Schmitt‐Kopplin, Marco Matzka, Alexander Ruf, Bénédicte Ménèz 等
2023-01-11
置信度 0.72
AstrobiologyMartianMeteoriteMars Exploration ProgramEarth science
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Abstract— In a study of the isotopic signatures of trapped Xe in shock‐produced glass of shergottites and in ALH 84001, we observe three components: (1) modern Martian atmospheric Xe that is isotopically mass fractionated relative to solar Xe, favoring the hea…
openalex
K. J. Mathew, J. S. KIM, K. Marti
1998-07-01
置信度 0.72
MartianMeteoriteXenonAtmosphere of MarsMars Exploration Program
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Abstract— The Kärdla crater is a 4 km‐wide impact structure of Late Ordovician age located on Hiiumaa Island, Estonia. The 455 Ma‐old buried crater was formed in shallow seawater in Precambrian crystalline target rocks that were covered with sedimentary rocks.…
openalex
Väino Puura, Heinz Huber, Juho Kirs, Aulis Kärki 等
2004-03-01
置信度 0.72
BrecciaGeologyPetrographyGeochemistryImpact crater
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Abstract— Several classes of chondritic meteorites experienced heterogeneous aqueous alteration and subsequent brecciation before agglomeration into the final parent bodies. These processes resulted in intimate mixing of materials altered to various degrees. I…
openalex
Lionel Wilson, K. Keil, Lauren Browning, Alexander N. Krot 等
1999-07-01
置信度 0.72
AsteroidParent bodyAstrobiologyAqueous solutionMeteorite
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Abstract— Lunar meteorite Dar al Gani 262 (DG 262)—found in the Libyan part of the Sahara—is a mature, anorthositic regolith breccia with highland affinities. The origin from the Moon is undoubtedly indicated by its bulk chemical composition; radionuclide conc…
openalex
A. Bischoff, D. Weber, Robert N. Clayton, T. Faestermann 等
1998-11-01
置信度 0.72
BrecciaMaficRegolithGeologyGeochemistry
-
Examination of fracture surfaces near the fusion crust of the martian meteorite Allan Hills (ALH) 84001 have been conducted using scanning electron microscopy (SEM) and atomic force microscopy (AFM) and has revealed structures strongly resembling mycelium. The…
openalex
A. Steele, David T. Goddard, Dave Stapleton, J. Toporski 等
2000-03-01
置信度 0.72
MeteoriteMartianAstrobiologyGeologyPaleontology
-
Humankind has entered a new era of space exploration: settlements on other planetary bodies are foreseen in the near future. Advanced technologies are being developed to support the adaptation to extraterrestrial environments and, with a view on the longer ter…
openalex
Natalia Kozyrovska, Oleg N. Reva, Olga Podolich, Olga Kukharenko 等
2021-10-12
置信度 0.72
ConsumablesSustainabilityBusinessLife support systemAstrobiology
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Over the last few decades geo‐ and thermochronological techniques based on the accumulation of radiogenic 4He in minerals have gained popularity. Currently there is no mineral‐based 4He reference material that allows routine screening of gas extraction and mea…
openalex
O. V. Yakubovich, Finlay M. Stuart, Ekaterina S. Ivanova, Fernando Gervilla
2023-05-14
置信度 0.72
Radiogenic nuclidePrecambrianGeologyThermochronologyZircon
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Abstract We conducted a paleomagnetic study of the matrix of Allende CV3 chondritic meteorite, isolating the matrix's primary remanent magnetization, measuring its magnetic fabric and estimating the ancient magnetic field intensity. A strong planar magnetic fa…
openalex
Adrian R. Muxworthy, P. A. Bland, T. M. Davison, James D. Moore 等
2017-07-21
置信度 0.72
RemanenceAllende meteoriteMagnetizationGeologyChondrule
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Most ancient organic microfossils delicately preserved in 3D have been found in cherts. Although entombment within silica has been shown to promote morphological preservation, the impact of early silicification on the molecular evolution of fossilized microorg…
openalex
Julien Alléon, Sylvain Bernard, Corentin Le Guillou, Damien Daval 等
2016-06-01
置信度 0.72
DiagenesisMicroorganismDegradation (telecommunications)GeologyQuartz
-
Abstract Allocation FC6,0,10,0,26 from Stardust track 10 shows a slightly wavy silica glass/compressed silica aerogel interface exposing a patchwork of compressed silica aerogel domains and domains of silica glass with embedded Wild 2 materials in ultra‐thin T…
openalex
Frans J. M. Rietmeijer
2016-08-02
置信度 0.72
AerogelMaterials scienceCore (optical fiber)Composite materialMineralogy
-
Vast expanses of Earth's surface are covered by ice, with microorganisms in these systems affecting local and global biogeochemical cycles. We examined microbial assemblages from habitats fed by glacial meltwater within the McMurdo Dry Valleys, Antarctica and …
openalex
HJ Smith, Markus Dieser, DM McKnight, MD SanClements 等
2018-05-11
置信度 0.72
MeltwaterGlacierBiogeochemical cycleGlacial periodDissolved organic carbon
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Abstract— Primitive meteorites exhibit certain features that are consistent with aqueous and thermal alteration on asteroids, but O‐isotopic analyses show only a modest heavy‐isotope shift, interpreted as indicating modification in the nebula. To understand th…
openalex
P. A. Bland, Martin Lee, A. S. Sexton, I. A. Franchi 等
2000-11-01
置信度 0.72
ChondriteMeteoriteSilicateIsotopes of oxygenWeathering
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Abstract— In this work we present the results of a systematic search for cometary organics in 14 Stardust particles (particles from comet 81P/Wild 2, captured by NASA's Stardust mission) by TEM and multidisciplinary studies (XANES and NanoSIMS) of Febo and Ada…
openalex
G. Matrajt, Motoo Ito, S. Wirick, S. Messenger 等
2008-02-01
置信度 0.72
XANESParticle (ecology)MeteoriteCarbonaceous chondriteSpectral line
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Abstract The brecciation and shock classification of 2280 ordinary chondrites of the meteorite thin section collection at the Institut für Planetologie (Münster) has been determined. The shock degree of S3 is the most abundant shock stage for the H and LL chon…
openalex
A. Bischoff, Maximilian Schleiting, Markus Patzek
2018-10-21
置信度 0.72
ChondriteRingwooditePlagioclaseMeteoriteGeology
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Abstract— We describe a focused ion beam scanning electron microscope (FIB‐SEM) technique that enables coordinated isotopic and mineralogic analysis of planetary materials. We show that site‐specific electron‐transparent sections can be created and extracted i…
openalex
T. J. Zega, L. R. Nittler, H. Busemann, P. Höppe 等
2007-08-01
置信度 0.72
Focused ion beamScanning electron microscopeSecondary ion mass spectrometryTransmission electron microscopyMaterials science
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Abstract— As of July 2001, 1238 Libyan meteorites have been reported. Most were found in two areas called Dar al Gani and Hamadah al Hamra. Dar al Gani is located on a plateau of marine carbonate rocks with marly components. Eight‐hundred and sixty‐nine meteor…
openalex
Jochen Schlüter, L. Schultz, F. Thiedig, B. O. Al‐Mahdi 等
2002-08-01
置信度 0.72
MeteoriteGeologyWeatheringAstrobiologyPlateau (mathematics)
-
Abstract— Laboratory dissolution experiments using the LL6 ordinary chondrite Bensour demonstrate that meteoritic minerals readily react with distilled water at low temperatures, liberating ions into solution and forming reaction products. Three experiments we…
openalex
Martin Lee, C. L. Smith, Sarah H. Gordon, Mark E. Hodson
2006-08-01
置信度 0.72
DissolutionChondriteMeteoriteSilicateAluminosilicate
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Kamacite particles (Fe–Ni, Ni < 5 per cent), are very common in extra-terrestrial materials, such as meteorites. It is normally assumed that for kamacite particles to be reliable recorders of magnetic fields, they need to be magnetically uniform (single domain…
openalex
Adrian R. Muxworthy, Wyn Williams
2015-05-18
置信度 0.72
KamaciteSuperparamagnetismSingle domainCondensed matter physicsGrain size
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Abstract— We report new geochemical evidence from ten Cretaceous‐Tertiary (K‐T) boundary sites in North America and Europe, indicating the presence of a material remnant of a large asteroid or comet that struck the Earth at 65.0 Ma. Mössbauer spectroscopic dat…
openalex
Thomas J. Wdowiak, L. P. Armendarez, D. G. Agresti, M. L. Wade 等
2001-01-01
置信度 0.72
GeologyCretaceousAtmosphere (unit)Sedimentary rockIridium
-
Abstract On February 24, 1979, a deeply oxidized mass of iron meteorite was excavated from bauxite at an open cut mine on the Gove Peninsula, Northern Territory, Australia. The meteorite, measuring 0.75–1 m in diameter and of unknown total weight, was found at…
openalex
A. W. R. Bevan, Peter Downes, Dermot A. Henry, Michael Verrall 等
2019-06-11
置信度 0.72
MeteoriteWeatheringGeologyIron meteoriteGeochemistry
-
O values of the impactor and the proto-Earth must have been significantly closer than that between Earth and aubrites. If the Earth-Moon system evolved from an initially highly vaporized and isotopically homogenized state, as indicated by recent dynamical mode…
openalex
Richard C. Greenwood, Jean‐Alix Barrat, Martin F. Miller, Mahesh Anand 等
2018-03-02
置信度 0.72
AstrobiologyOxygenAccretion (finance)Earth (classical element)Isotopes of oxygen
-
Flow through sand columns inoculated with Pseudomonas aeruginosa were used to investigate the effect of bioclogging on the complex conductivity and flow and transport properties. Complex conductivity (0.1–1000 Hz), the bulk hydraulic conductivity (K), volumetr…
openalex
Gamal Z. Abdel Aal, Estella A. Atekwana, Eliot A. Atekwana
2010-07-15
置信度 0.72
Hydraulic conductivityPorosityConductivityPorous mediumScanning electron microscope
-
openalex
Teruya Maki, Kazutaka Hara, Fumihisa Kobayashi, Yasunori Kurosaki 等
2015-08-21
置信度 0.72
TroposphereAlphaproteobacteriaPeninsulaEnvironmental scienceAtmosphere (unit)
-
Biosilicification is the process by which organisms incorporate soluble, monomeric silicic acid, Si(OH)4, in the form of polymerized insoluble silica, SiO2. Biosilicifying eukaryotes, including diatoms, siliceous sponges, and higher plants, have been the targe…
openalex
Takeshi Ikeda
2021-04-20
置信度 0.72
Silicic acidBacteriaExtracellularBacterial cell structureChemistry
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Abstract— An important and poorly understood group of rocks found in the ancient lunar highlands is called “feldspathic granulitic impactites.” Rocks of the granulite suite occur at most of the Apollo highlands sites as hand samples, rake samples, clasts in br…
openalex
Janet A. Cushing, G. J. Taylor, M. D. Norman, Klaus Keil
1999-03-01
置信度 0.72
GranuliteGeologyGeochemistryAnorthositeBreccia
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Abstract— Of the only seven submarine impact craters that have been found globally, the Mjølnir crater is one of the best preserved and retains crater and ejecta. Geochemical studies (organic pyrolysis using the Rock Eval technique and XRF analysis for major, …
openalex
Henning Dypvik, Moses Attrep
1999-05-01
置信度 0.72
Impact craterGeologyEjectaSedimentary depositional environmentGeochemistry
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The article considers sustainable mining development as one of the most important problems of achieving global stability as a solution to the contradiction between the growing needs of mankind and the presence of limits of the biosphere in their provision. It …
openalex
Arkadiy Ursul, Т.А. Урсул
2019-01-01
置信度 0.72
Sustainable developmentSpace (punctuation)BiosphereContradictionExtraterrestrial life
-
Phase equilibrium relations of the common rock-forming oxides except water, by
openalex
Brian Mason
1979-01-01
置信度 0.72
MeteoriteCosmochemistryAstrobiologyGeologyPhysics
-
Samples returned from Mars would be placed under quarantine at a Sample Receiving Facility (SRF) until they are considered safe to release to other laboratories for further study. The process of determining whether samples are safe for release, which may invol…
openalex
Nicholas J. Tosca, Carl B. Agee, Charles S. Cockell, Daniel P. Glavin 等
2021-12-14
置信度 0.72
Mars Exploration ProgramSample (material)Environmental scienceProcess engineeringComputer science
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The formation of alanine and glycine oligomers in films produced by drying aqueous mixtures of lactic acid and silica nanoparticles has been studied as a model prebiotic reaction. The addition of silica results in alanine or glycine enrichment in the polymers.…
openalex
Aaron D. McKee, Martin Solano, Andrew K. Saydjari, Chris J. Bennett 等
2018-06-29
置信度 0.72
PrebioticPeptide bondAmideChemistryAmino acid
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The Araguainha meteorite impact was certainly one of the most catastrophic events in the history of the South American continent. The impact occurred around 250 Ma ago, when the region was covered by the estuarine waters of the Parana Basin in central parts of…
openalex
Cristiano Lana, Yára R. Marangoni
2009-01-01
置信度 0.72
Impact craterGeologyExtinction eventImpact structureMeteorite
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Abstract— We have analyzed the potassium isotopic composition of four tektites from the Australasian strewn field, spanning a wide diversity of thermal histories, inferred from textures and volatile element contents. Our results indicate no isotopic difference…
openalex
M. Humayun, Christian Koeberl
2004-09-01
置信度 0.72
PotassiumVolatilesFractionationIsotopes of potassiumMineralogy
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Abstract Petrographic and geochemical data obtained on the Araguainha impact crater (Goiás/Mato Grosso States, Brazil) indicate the existence of several molten products that originated during impact‐induced congruent melting of an alkali‐granite exposed in the…
openalex
Dailto Silva, Cristiano Lana, Carlos Roberto de Souza Filho
2016-01-27
置信度 0.72
PetrographyGeologyImpact craterGeochemistryMineralogy
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Abstract Hypervelocity impacts within the solar system affect both the magnetic remanence and bulk magnetic properties of planetary materials. Spherical shock experiments are a novel way to simulate shock events that enable materials to reach high shock pressu…
openalex
N. S. Bezaeva, Nicholas L. Swanson‐Hysell, Sonia M. Tikoo-Schantz, D. D. Badyukov 等
2016-11-01
置信度 0.72
Magnetic mineralogyRemanenceGeologyCoercivityImpact crater
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Abstract Freezing in porous media is associated with a host of dynamic phenomena that stem from the presence and mobility of premelted liquid at subzero temperatures. Accurate assessments of the progressive liquid‐ice phase transition is required for predictiv…
openalex
Jiangzhi Chen, Shenghua Mei, Julia T. Irizarry, A. W. Rempel
2020-09-22
置信度 0.72
Porous mediumPermafrostMonte Carlo methodWettingCurvature
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Abstract Exogenous delivery of amino acids and other organic molecules to planetary surfaces may have played an important role in the origins of life on Earth and other solar system bodies. Previous studies have revealed the presence of indigenous amino acids …
openalex
Aaron S. Burton, Hannah L. McLain, D. P. Glavin, Jamie E. Elsila 等
2015-03-01
置信度 0.72
ChondriteAmino acidMeteoriteChemistryParent body
-
We were surprised to see the cover of the August 2013 issue of Meteoritics & Planetary Science (MAPS) adorned by a field image of a Greenlandic migmatite. The caption refers to the Maniitsoq structure in Greenland and explains that the lithology shown on the c…
openalex
W. U. Reimold, L. Ferrière, A. Deutsch, Christian Koeberl
2014-05-01
置信度 0.72
Geology
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Abstract Quantitative knowledge about the burial of sedimentary components at the seafloor has wide‐ranging implications in ocean science, from global climate to continental weathering. The use of 230 Th‐normalized fluxes reduces uncertainties that many prior …
openalex
Christopher T. Hayes, Kassandra M Costa, Robert F. Anderson, Eva Calvo 等
2021-03-24
置信度 0.72
AuthigenicSeafloor spreadingSedimentary rockGeologyDeep sea
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We present mid-infrared spectra from individual enstatite silicate grains separated from primitive type 3 chondritic meteorites. The 2–16 μm transmission spectra were taken with microspectroscopic Fourier-transform infrared (FT-IR) techniques as part of a proj…
openalex
J. E. Bowey, A. Morlok, M. Köhler, M. M. Grady
2007-03-12
置信度 0.72
EnstatiteForsteriteMeteoriteChondriteSilicate
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Abstract— Petrological changes in Ni‐free and low‐Ni pyrrhotite, and much less in pentlandite, during atmospheric entry flash‐heating of the sulfide IDPs L2005E40, L2005C39, and L2006A28 support 1) ferrous sulfide oxidation with vacancy formation and Fe3+ orde…
openalex
Frans J. M. Rietmeijer
2004-11-01
置信度 0.72
PyrrhotitePentlanditeAtmospheric entryImpact craterSulfide
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Abstract— Quartz grains subjected to high‐strain‐rate shock waves owing to meteorite or cometary impact on Earth's surface commonly display shock lamellae. These lamellae appear as remarkably straight, thin, planar features (microstructures) in sets within whi…
openalex
Sam Boggs, David Krinsley, Gordon G. Goleš, Abbas Seyedolali 等
2001-06-01
置信度 0.72
QuartzScanning electron microscopeCathodoluminescenceImpact craterMicrostructure
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Abstract— The results of a systematic field mapping campaign at the Haughton impact structure have revealed new information about the tectonic evolution of mid-size complex impact structures. These studies reveal that several structures are generated during th…
openalex
G. R. Osinski, J. G. Spray
2005-12-01
置信度 0.72
Impact craterGeologyAnticlineThrust faultImpact structure
-
There is an increasing interest in the icy moons of the Solar System due to their potential habitability and as targets for future exploratory missions, which include astrobiological goals. Several studies have reported new results describing the details of th…
openalex
Thiago Altair, Márcio G. B. de Avellar, Fábio Rodrigues, Douglas Galante
2018-01-04
置信度 0.72
HabitabilityAstrobiologyEnvironmental scienceBiologyPhysics
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Elongate, fine tubes, approximately 1 microm wide and up to 200 microm long, extend from fractured surfaces, vesicle walls, and internal fractures into fragments of basalt glass in samples from the Hawaii Scientific Drilling Project #2 phase 1 (HSDP #2(1)) cor…
openalex
Anthony W. Walton
2008-05-08
置信度 0.72
BasaltGeologyPlagioclaseGeochemistryScientific drilling
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Abstract The curation and handling of volatile‐bearing astromaterials is of prime importance in current and future plans for sample return missions to targets containing organic compounds, ices, or other volatile components. We report on the specific curation …
openalex
C. D. K. Herd, Robert W. Hilts, Aaron Skelhorne, Danielle N. Simkus
2016-03-01
置信度 0.72
MeteoriteChondriteAstrobiologyData curationEnvironmental science
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openalex
Yoshihiro Furukawa, Toshimori Sekine, Takeshi Kakegawa, Hiromoto Nakazawa
2011-08-29
置信度 0.72
OlivineComminutionMineralogyMeteoriteGeology
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Abstract— The petrographic and chemical characteristics of a fresh Indian meteorite fall at Sabrum are described. Its mean mineral composition is defined by olivine (Fa31.4), orthopyroxene (Fs25.1,Wo2.0), clinopyroxene (Wo45En45.6Fs9.4) and plagioclase (An10.6…
openalex
Sekhar Ghosh, S. V. S. Murty, P. N. Shukla, A. D. Shukla 等
2002-03-01
置信度 0.72
MeteoroidMeteoriteChondriteGeologyPetrography
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Abstract Libyan Desert Glass ( LDG ) is a SiO 2 ‐rich natural glass whose origin, formation mechanism, and target material are highly debated. We here report on the finding of a lens‐shaped whitish inclusion within LDG. The object is dominantly composed of sil…
openalex
A. Greshake, Richard Wirth, Jörg Fritz, T. Jakubowski 等
2017-12-25
置信度 0.72
CristobaliteMulliteRutileIlmeniteMineral
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Icy worlds in the solar system and beyond have attracted a remarkable attention as possible habitats for life. The current consideration about whether life exists beyond Earth is based on our knowledge of life in terrestrial cold environments. On Earth, glacie…
openalex
Eva García‐López, Cristina Cid
2017-07-27
置信度 0.72
AstrobiologyHabitabilityGlacierSolar SystemPlanetary habitability
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Abstract— The impact melt breccias from the Tenoumer crater (consisting of a fine-grained intergrowth of plagioclase laths, pyroxene crystals, oxides, and glass) display a wide range of porosity and contain a large amount of target rock clasts. Analyses of maj…
openalex
Giovanni Pratesi, Marco Morelli, Angelo Pio Rossi, G. G. Ori
2005-11-01
置信度 0.72
GeologyFelsicImpact craterBrecciaMafic
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Abstract– A Devonian siltstone from Orkney, Scotland, shows survival of biomarkers in high‐velocity impact experiments. The biomarkers were detected in ejecta fragments from experiments involving normal incidence of steel projectiles at 5–6 km s−1, and in proj…
openalex
John Parnell, Stephen A. Bowden, P. Lindgren, M. J. Burchell 等
2010-08-01
置信度 0.72
EjectaHypervelocityProjectileBiomarkerSiltstone
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Abstract Insoluble organic matter (IOM) is the major organic component of chondritic meteorites and may be akin to organic materials from comets and interplanetary dust particles (IDPs). Reflectance spectra of IOM in the range 0.35–25 μm are presented as a too…
openalex
H. H. Kaplan, R. E. Milliken, C. M. O'd. Alexander, C. D. K. Herd
2019-03-03
置信度 0.72
MeteoriteAsteroidSpectral lineContext (archaeology)Astrobiology
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Abstract CM meteorites are dominant members of carbonaceous chondrites (CCs), which evidently accreted in a region separated from the terrestrial planets. These chondrites are key in determining the accretion regions of solar system materials, since in Mg and …
openalex
Elishevah van Kooten, Larissa L. Cavalcante, Daniel Wielandt, Martin Bizzarro
2020-03-01
置信度 0.72
ChondriteChondruleCarbonaceous chondriteMeteoriteAccretion (finance)
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Abstract— Measurements of He isotopes in cluster interplanetary dust particles (IDPs) from stratospheric dust collector L2009 reveal anomalous 3He/4He ratios comparable to those seen earlier, up to ∼40x the solar wind ratio, in particles from the companion col…
openalex
R. O. Pepin, R. L. Palma, D. J. Schlutter
2001-11-01
置信度 0.72
Interplanetary dust cloudPhysicsCosmic rayCosmic dustAstrobiology
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Our current knowledge of the genesis, ascent, storage and eruption of mafic magmas is intimately linked with olivine, its primary crystal cargo. Recent claims that phenocryst-size crystals can grow rapidly and non-concentrically are challenging our perception …
openalex
Adrien J. Mourey, Thomas Shea
2019-11-15
置信度 0.72
PhenocrystOlivineBasaltGeologyCharacterization (materials science)
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Abstract Six Cr‐spinel grains from NWA 6077 brachinite‐like and NWA 725 winonaite achondrites have been studied by single‐crystal X‐ray diffraction and structural refinement. From a chemical point of view, spinels from NWA 6077 show Cr/(Cr + Al) (i.e., Cr#) an…
openalex
Davide Lenaz, Birger Schmitz
2017-05-08
置信度 0.72
AchondriteMeteoriteChromiteSpinelOlivine
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Abstract A 532‐nm‐excited lunar Raman spectrometer (LRS) has been selected as a scientific payload of the Chang'e‐7 mission, exploring mineralogy assemblages in the lunar south polar region. However, the quantification of dark‐colored silicate minerals via Ram…
openalex
Xiaobin Qi, Zongcheng Ling, Ping Liu, Jian Chen 等
2023-05-01
置信度 0.72
AugiteRaman spectroscopyFeldsparSilicateMineralogy
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Abstract— CM chondrite clasts that have experienced different degrees of aqueous alteration occur in H‐chondrite and HED meteorite breccias. Many clasts are fragments of essentially unshocked CM projectiles that accreted at low relative velocities to the regol…
openalex
Alan E. Rubin, W. F. Bottke
2009-05-01
置信度 0.72
BrecciaParent bodyClastic rockRegolithGeology
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We propose and validate an algorithm for shape‐from‐shading that works for planetary data, with multiple input images, realistic camera models, non‐Lambertian reflectance, variable albedo, uncertain camera positions and orientations, low angles of illumination…
openalex
Oleg Alexandrov, R. A. Beyer
2018-09-26
置信度 0.72
Photometric stereoComputer visionComputer scienceArtificial intelligenceShading
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Abstract Crystal size distribution analysis is a non-destructive, quantitative method providing insights into the crystallization histories of magmas. Traditional crystal size distribution data collection requires the manual tracing of crystal boundaries withi…
openalex
S. K. Bell, K. H. Joy, J. F. Pernet‐Fisher, Margaret Hartley
2020-04-01
置信度 0.72
Crystal (programming language)NucleationComputer scienceSegmentationCrystallization
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Abstract— This work reports on the noble gas inventory of 3 new acapulcoites, 3 brachinites, 2 new eucrites from the Dar al Gani region in Libya, the unique achondrite Dar al Gani (DaG) 896 from the same locality, the new eucrite‐like achondrite Northwest Afri…
openalex
A. Patzer, Ludolf Schultz, L. Franke
2003-10-01
置信度 0.72
AchondriteNoble gasMeteoriteRadiogenic nuclideParent body
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Abstract The Paleocene‐Eocene Thermal Maximum (PETM, ca. 56 Ma) is marked by a negative carbon isotope excursion (CIE) and increased global temperatures. The CIE is thought to result from the release of 13 C‐depleted carbon, although the source(s) of carbon an…
openalex
Guillaume Fontorbe, Patrick Frings, Christina L. De La Rocha, Katharine Hendry 等
2020-03-21
置信度 0.72
Carbon cycleIsotopes of carbonGeologyCarbon fibersEarth science
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Abstract. The role of viruses at different stages of the origin of life has recently been reconsidered. It appears that viruses may have accompanied the earliest forms of life, allowing the transition from an RNA to a DNA world and possibly being involved in t…
openalex
François Orange, A. Chabin, Aurore Gorlas, Soizick Lucas‐Staat 等
2011-06-09
置信度 0.72
ArchaeaBiologySulfolobusVirusAbiogenesis
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Abstract— Libyan Desert Glass (LDG) is an impact‐related, natural glass of still unknown target material. We have determined Rb‐Sr and Sm‐Nd isotopic ratios from seven LDG samples and five associated sandstones from the LDG strewn field in the Great Sand Sea, …
openalex
Peter Schaaf, D. Müller‐Sohnius
2002-04-01
置信度 0.72
GeologyPrecambrianPlagioclaseGeochemistryRadiogenic nuclide
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Despite the fact that the terrestrial planets all formed from the protoplanetary disk, their bulk compositions show marked departures from that of material condensing from a canonical H 2 -rich solar nebula. Metallic cores fix the oxygen fugacities ( f O 2 s) …
europepmc
2025
置信度 0.80
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Water on the surface of the Moon is a potentially vital resource for future lunar bases and longer-range space exploration. Effective use of the resource depends on developing an understanding of where and how within the regolith the water is formed and retain…
europepmc
2023
置信度 0.80
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Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of samples from near-Ear…
europepmc
2023
置信度 0.80
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Space weathering is a key process in the interpretation of airless planetary surfaces. As we engage new missions to planetary objects with potentially novel surfaces such as 16 Psyche, there is renewed interest in expanding our knowledge of space weathering ef…
europepmc
2022
置信度 0.80
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Given the compositional diversity of asteroids, and their distribution in space, it is impossible to consider returning samples from each one to establish their origin. However, the velocity and molecular composition of primary minerals, hydrated silicates, an…
europepmc
2019
置信度 0.80
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The Hamburg meteorite fell on January 16, 2018, near Hamburg, Michigan, after a fireball event widely observed in the U.S. Midwest and in Ontario, Canada. Several fragments fell onto frozen surfaces of lakes and, thanks to weather radar data, were recovered da…
europepmc
2020
置信度 0.80
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As the largest and oldest well-preserved impact structure on the Moon, the South Pole-Aitken (SPA) basin on the lunar farside is critical for understanding early solar system dynamics and lunar history, but accurately determining its age remains challenging. C…
europepmc
2025
置信度 0.80
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Sample return from a main-belt asteroid has not yet been attempted, but appears technologically feasible. While the cost implications are significant, the scientific case for such a mission appears overwhelming. As suggested by the "Grand Tack" model, the stru…
europepmc
2020
置信度 0.80
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Nucleosynthetic isotope anomalies show that the first few million years of solar system history were characterized by two distinct cosmochemical reservoirs, CC (carbonaceous chondrites and related differentiated meteorites) and NC (the terrestrial planets and …
europepmc
2021
置信度 0.80
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Mars experienced a dynamo process that generated a global magnetic field ~4.3 (or earlier) to 3.6 billion years ago (Ga). The cessation of this dynamo strongly affected Mars' history and is expected to be linked to thermochemical evolution of Mars' iron-rich l…
europepmc
2024
置信度 0.80