Search Results - "Connolly, Harold"
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High‐resolution cathodoluminescence of calcites from the Cold Bokkeveld chondrite: New insights on carbonatation processes in CM parent bodies
Published in Meteoritics & planetary science (01-09-2024)“…Carbonates, as secondary minerals found in CM chondrites, have been widely employed for reconstructing the composition of the fluids from which they…”
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The importance of experiments: Constraints on chondrule formation models
Published in Meteoritics & planetary science (01-07-2012)“…— We review a number of constraints that have been placed on the formation of chondrules and show how these can be used to test chondrule formation models…”
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In search of the source of asteroid (101955) Bennu: Applications of the stochastic YORP model
Published in Icarus (New York, N.Y. 1962) (01-02-2015)“…•Bennu most likely came from a low albedo asteroid family in inner main belt.•We modeled the dynamical evolution of candidate source family members.•Semimajor…”
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Chondrules: The canonical and noncanonical views
Published in Journal of geophysical research. Planets (01-10-2016)“…Millimeter‐scale rock particles called chondrules are the principal components of the most common meteorites, chondrites. Hence, chondrules were arguably the…”
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Finely layered CM2 carbonaceous chondrites may be analogs for layered boulders on asteroid (101955) Bennu
Published in Meteoritics & planetary science (01-11-2024)“…Orbital observations of Bennu revealed a surface covered in boulders that are most similar among meteorites in our collections to aqueously altered…”
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Chondrules from high-velocity collisions: thermal histories and the agglomeration problem
Published in Monthly notices of the Royal Astronomical Society (01-05-2021)“…ABSTRACT We assess whether chondrules, once-molten mm-sized spheres filling the oldest meteorites, could have formed from super-km s−1 collisions between…”
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Alignment of fractures on Bennu’s boulders indicative of rapid asteroid surface evolution
Published in Nature geoscience (01-06-2022)“…On asteroids, fractures develop due to stresses driven by diurnal temperature variations at spatial scales ranging from sub-millimetres to metres. However, the…”
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The formation and alteration of the Renazzo-like carbonaceous chondrites III: Toward understanding the genesis of ferromagnesian chondrules
Published in Meteoritics & planetary science (01-01-2015)“…To better understand the formation conditions of ferromagnesian chondrules from the Renazzo‐like carbonaceous (CR) chondrites, a systematic study of 210…”
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Extraterrestrial amino acids and L‐enantiomeric excesses in the CM2 carbonaceous chondrites Aguas Zarcas and Murchison
Published in Meteoritics & planetary science (01-01-2021)“…The abundances, distributions, enantiomeric ratios, and carbon isotopic compositions of amino acids in two fragments of the Aguas Zarcas CM2 type carbonaceous…”
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The formation and alteration of the Renazzo-like carbonaceous chondrites II: Linking O-isotope composition and oxidation state of chondrule olivine
Published in Geochimica et cosmochimica acta (15-01-2013)“…To better understand the formation conditions of type-I and type-II chondrules in the Renazzo-like carbonaceous (CR) chondrites, an in situ major- and…”
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Molecular distribution and 13C isotope composition of volatile organic compounds in the Murchison and Sutter's Mill carbonaceous chondrites
Published in Meteoritics & planetary science (01-02-2024)“…Volatile organic compounds (VOCs) are carbon‐containing chemicals that may evaporate rapidly at room temperature and standard pressure. Such organic compounds…”
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The Nature of Insoluble Organic Matter in Sutter’s Mill and Murchison Carbonaceous Chondrites: Testing the Effect of X-ray Computed Tomography (XCT) and Exploring Parent Body Organic Molecular Evolution
Published in Meteoritics & planetary science (01-01-2024)“…This study analyzed samples of the Murchison and Sutter’s Mill carbonaceous chondrite meteorites in support of the future analysis of samples returned from the…”
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Investigating the Impact of X-Ray Computed Tomography Imaging on Soluble Organic Matter in the Murchison Meteorite: Implications for Bennu Sample Analyses
Published in Meteoritics & planetary science (01-01-2024)“…X-ray computed tomography (XCT) is a valuable reconnaissance tool for three-dimensional imaging and identification of distinct lithologies in extraterrestrial…”
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Compositional evolution of the protoplanetary disk: Oxygen isotopes of type-II chondrules from CR2 chondrites
Published in Geochimica et cosmochimica acta (15-04-2010)“…Chondrules are the dominant component of chondritic meteorites and attest to high-temperature transient heating events within the protoplanetary disk. They…”
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Incremental laser space weathering of Allende reveals non-lunar like space weathering effects
Published in Icarus (New York, N.Y. 1962) (01-04-2017)“…•Spectra of weathered Allende have both a lunar and non-lunar space weathering component.•Spectra of Allende became increasingly bluer in the 450–550nm region…”
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Extraterrestrial Organic Compounds and Cyanide in the CM2 Carbonaceous Chondrites Aguas Zarcas and Murchison
Published in Meteoritics & planetary science (01-07-2020)“…Evaluating the water-soluble organic composition of carbonaceous chondrites is key to understanding the inventory of organic matter present at the origins of…”
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Petrology and oxygen isotope compositions of chondrules in E3 chondrites
Published in Geochimica et cosmochimica acta (01-11-2011)“…Chondrules in E3 chondrites differ from those in other chondrite groups. Many contain near-pure endmember enstatite (Fs<1). Some contain Si-bearing FeNi metal,…”
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Prokaryotic and Fungal Characterization of the Facilities Used to Assemble, Test, and Launch the OSIRIS-REx Spacecraft
Published in Frontiers in microbiology (05-11-2020)“…To characterize the ATLO (Assembly, Test, and Launch Operations) environment of the OSIRIS-REx spacecraft, we analyzed 17 aluminum witness foils and two blanks…”
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Microchondrules in three unequilibrated ordinary chondrites
Published in Meteoritics & planetary science (01-02-2016)“…We report on a suite of microchondrules from three unequilibrated ordinary chondrites (UOCs). Microchondrules, a subset of chondrules that are ubiquitous…”
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2014 Leonard Medal for Roger H. Hewins
Published in Meteoritics & planetary science (01-10-2014)Get full text
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