Search Results - "Macke, Robert J"

Density, porosity, and magnetic susceptibility of carbonaceous chondrites by MACKE, Robert J., CONSOLMAGNO, Guy J., BRITT, Daniel T.

“…– We report physical properties (bulk and grain density, magnetic susceptibility, and porosity) measured using nondestructive and noncontaminating methods for…”
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The density and porosity of lunar rocks by Kiefer, Walter S., Macke, Robert J., Britt, Daniel T., Irving, Anthony J., Consolmagno, Guy J.

“…Accurate lunar rock densities are necessary for constructing gravity models of the Moon's crust and lithosphere. Most Apollo‐era density measurements have…”
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Density, porosity, and magnetic susceptibility of achondritic meteorites by MACKE, Robert J., BRITT, Daniel T., CONSOLMAGNO, Guy J.

“…– As part of a large‐scale survey of meteorite bulk and grain densities, porosities, and magnetic susceptibilities, we measured these properties for 174 stones…”
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Momentum transfer in hypervelocity cratering of meteorites and meteorite analogs: Implications for orbital evolution and kinetic impact deflection of asteroids by Flynn, George J., Durda, Daniel D., Molesky, Mason J., May, Brian A., Congram, Spenser N., Loftus, Colleen L., Reagan, Jacob R., Strait, Melissa M., Macke, Robert J.

“…•Ejecta from hypervelocity impact cratering results in significant momentum transfer, equaling or exceeding the direct momentum transfer from the…”
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Ancient porosity preserved in ordinary chondrites: Examining shock and compaction on young asteroids by Friedrich, Jon M., Rubin, Alan E., Beard, Sky P., Swindle, Timothy D., Isachsen, Clark E., Rivers, Mark L., Macke, Robert J.

“…We use a combination of 2D and 3D petrographic examination and 40Ar‐39Ar analyses to examine the impact histories of a suite of seven ordinary chondrites…”
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Physical properties of the stone meteorites: Implications for the properties of their parent bodies by Flynn, George J., Consolmagno, Guy J., Brown, Peter, Macke, Robert J.

“…The physical properties of the stone meteorites provide important clues to understanding the formation and physical evolution of material in the Solar…”
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Heat capacities of ordinary chondrite falls below 300 K by Macke, Robert J., Opeil, Cyril, Consolmagno, Guy J.

“…Low‐temperature specific heat capacities of meteorites provide valuable data for understanding the composition and evolution of meteorites and modeling the…”
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Relationships among physical properties as indicators of high temperature deformation or post-shock thermal annealing in ordinary chondrites by Friedrich, Jon M., Ruzicka, Alex, Macke, Robert J., Thostenson, James O., Rudolph, Rebecca A., Rivers, Mark L., Ebel, Denton S.

“…Collisions and attendant shock compaction must have been important for the accretion and lithification of planetesimals, including the parent bodies of…”
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The first samples from Almahata Sitta showing contacts between ureilitic and chondritic lithologies: Implications for the structure and composition of asteroid 2008 TC3 by Goodrich, Cyrena Anne, Zolensky, Michael E., Fioretti, Anna Maria, Shaddad, Muawia H., Downes, Hilary, Hiroi, Takahiro, Kohl, Issaku, Young, Edward D., Kita, Noriko T., Hamilton, Victoria E., Riebe, My E. I., Busemann, Henner, Macke, Robert J., Fries, M., Ross, D. Kent, Jenniskens, Peter

“…Almahata Sitta (AhS), an anomalous polymict ureilite, is the first meteorite observed to originate from a spectrally classified asteroid (2008 TC3). However,…”
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Low‐temperature thermal properties of iron meteorites by Noyes, Christopher S., Consolmagno, Guy. J., Macke, Robert J., Britt, Daniel T., Opeil, Cyril P.

“…We have measured the thermal conductivity and specific heat capacity of subsamples from four iron meteorites with nickel concentrations between 5% and 8%…”
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The Arpu Kuilpu meteorite: In‐depth characterization of an H5 chondrite delivered from a Jupiter Family Comet orbit by Anderson, Seamus L., Benedix, Gretchen K., Godel, Belinda, Alosius, Romain M. L., Krietsch, Daniela, Busemann, Henner, Maden, Colin, Friedrich, Jon M., McMonigal, Lara R., Welten, Kees C., Caffee, Marc W., Macke, Robert J., Cadogan, Seán, Ryan, Dominic H., Jourdan, Fred, Mayers, Celia, Laubenstein, Matthias, Greenwood, Richard C., Roberts, Malcom P., Devillepoix, Hadrien A. R., Sansom, Eleanor K., Towner, Martin C., Cupák, Martin, Bland, Philip A., Forman, Lucy V., Fairweather, John H., Rogers, Ashley F., Timms, Nicholas E.

“…Over the Nullarbor Plain in South Australia, the Desert Fireball Network detected a fireball on the night of June 1, 2019 (7:30 pm local time), and 6 weeks…”
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Analysis of systematic error in “bead method” measurements of meteorite bulk volume and density by Macke S.J., Robert J., Britt, Daniel T., Consolmagno S.J., Guy J.

“…The Archimedean glass bead method for determining meteorite bulk density has become widely applied. We used well characterized, zero-porosity quartz and topaz…”
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Hypervelocity cratering and disruption of the Northwest Africa 869 ordinary chondrite meteorite: Implications for crater production, catastrophic disruption, momentum transfer and dust production on asteroids by Flynn, George J., Durda, Daniel D., Patmore, Emma B., Jack, Sarah J., Molesky, Mason J., May, Brian A., Congram, Spenser N., Strait, Melissa M., Macke, Robert J.

“…Most asteroids for which porosities have been inferred have porosities from 20% to more than 50%, comparable to the range measured on chondritic meteorites. To…”
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Shock compaction heating and collisional processes in the production of type 3 ordinary chondrites: Lessons from the (nearly) unique L3 chondrite melt breccia Northwest Africa 8709 by Ruzicka, Alex M., Friedrich, Jon M., Hutson, Melinda L., Strasser, Juliette W., Macke, Robert J., Rivers, Mark L., Greenwood, Richard C., Ziegler, Karen, Pugh, Richard N.

“…Northwest Africa (NWA) 8709 is a rare example of a type 3 ordinary chondrite melt breccia and provides critical information for the shock compaction histories…”
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Enstatite chondrite density, magnetic susceptibility, and porosity by MACKE, Robert J., CONSOLMAGNO, Guy J., BRITT, Daniel T., HUTSON, Melinda L.

“…– As part of our continuing survey of meteorite physical properties, we measured grain and bulk density, porosity, and magnetic susceptibility for 41 stones…”
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The First Samples from Almahata Sitta Showing Contacts Between Ureilitic and Chondritic Lithologies: Implications for the Structure and Composition of Asteroid 2008 TC 3 by Goodrich, Cyrena Anne, Zolensky, Michael E, Fioretti, Anna Maria, Shaddad, Muawia H, Downes, Hilary, Hiroi, Takahiro, Kohl, Issaku, Young, Edward D, Kita, Noriko T, Hamilton, Victoria E, Riebe, My E I, Busemann, Henner, Macke, Robert J, Fries, M, Ross, D Kent, Jenniskens, Petrus

“…Almahata Sitta (AhS), an anomalous polymict ureilite, is the first meteorite observed to originate from a spectrally classified asteroid (2008 TC ). However,…”
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The measurement of meteorite heat capacity at low temperatures using liquid nitrogen vaporization by Consolmagno, Guy J., Schaefer, Martha W., Schaefer, Bradley E., Britt, Daniel T., Macke, Robert J., Nolan, Michael C., Howell, Ellen S.

“…Meteorite heat capacity (specific heat) is an essential parameter in modeling many aspects of the orbital and internal evolution of small solar system bodies,…”
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Characterization of Mason Gully (H5): The second recovered fall from the Desert Fireball Network by Dyl, Kathryn A., Benedix, Gretchen K., Bland, Phil A., Friedrich, Jon M., Spurný, Pavel, Towner, Martin C., O'Keefe, Mary Claire, Howard, Kieren, Greenwood, Richard, Macke, Robert J., Britt, Daniel T., Halfpenny, Angela, Thostenson, James O., Rudolph, Rebecca A., Rivers, Mark L., Bevan, Alex W. R.

“…Mason Gully, the second meteorite recovered using the Desert Fireball Network (DFN), is characterized using petrography, mineralogy, oxygen isotopes, bulk…”
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Best practices for the use of meteorite names in publications by Heck, Philipp R., Herd, Christopher, Grossman, Jeffrey N., Badjukov, Dmitry, Bouvier, Audrey, Bullock, Emma, Chennaoui‐Aoudjehane, Hasnaa, Debaille, Vinciane, Dunn, Tasha L., Ebel, Denton S., Ferrière, Ludovic, Garvie, Laurence, Gattacceca, Jérôme, Gounelle, Matthieu, Herd, Richard, Ireland, Trevor, Jacquet, Emmanuel, Macke, Robert J., McCoy, Tim, McCubbin, Francis M., Mikouchi, Takashi, Metzler, Knut, Roskosz, Mathieu, Smith, Caroline, Wadhwa, Meenakshi, Welzenbach‐Fries, Linda, Yada, Toru, Yamaguchi, Akira, Zeigler, Ryan A., Zolensky, Michael

“…This document contains suggestions for best practices by authors who refer to meteorites in publications. It can also be taken as a guide for publishers in…”
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Incompletely compacted equilibrated ordinary chondrites by Sasso, Matthew R., Macke, Robert J., Boesenberg, Joseph S., Britt, Daniel T., Rivers, Mark L., Ebel, Denton S., Friedrich, Jon M.

“…— We document the size distributions and locations of voids present within five highly porous equilibrated ordinary chondrites using high‐resolution…”
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