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Browsing Dept. of Mineral Sciences Staff Publications by Title

Browsing Dept. of Mineral Sciences Staff Publications by Title

Now showing items 1-20 of 140

A composite Fe,Ni-FeS and enstatite-forsterite-diopside-glass vitrophyre clast in the Larkman Nunatak 04316 aubrite: Origin by pyroclastic volcanism

Keil, Klaus; McCoy, Timothy J.; Wilson, Lionel; Barrat, Jean-Alix; Rumble, Doug; Meier, Matthias M. M.; Wieler, Rainer; Huss, Gary R. (2011)

Abstract- We studied the mineralogy, petrology, and bulk, trace element, oxygen, and noble gas isotopic compositions of a composite clast approximately 20 mm in diameter discovered in the Larkman Nunatak (LAR) 04316 aubrite ...
A coordinated spectral, mineralogical, and compositional study of ordinary chondrites

Dunn, Tasha L.; McCoy, Timothy J.; Sunshine, J. M.; McSween, Harry Y. (2010)

Mineral compositions and abundances derived from visible/near-infrared (VIS/NIR or VNIR) spectra are used to classify asteroids, identify meteorite parent bodies, and understand the structure of the asteroid belt. Using a ...
A multidisciplinary effort to assign realistic source parameters to models of volcanic ash-cloud transport and dispersion during eruptions

Mastin, L. G.; Guffanti, M.; Servranckx, R.; Webley, P.; Barsotti, S.; Dean, K.; Durant, A.; Ewert, J. W.; Neri, A.; Rose, W. I.; Schneider, D.; Siebert, Lee; Stunder, B.; Swanson, G.; Tupper, A.; Volentik, A.; Waythomas, C. F. (2009)

During volcanic eruptions, volcanic ash transport and dispersion models (VATDs) are used to forecast the location and movement of ash clouds over hours to days in order to define hazards to aircraft and to communities ...
A petrologic and isotopic study of lodranites: Evidence for early formation as partial melt residues from heterogeneous precursors

McCoy, Timothy J.; Keil, K.; Clayton, R. N.; Mayeda, T. K.; Bogard, D. D.; Garrison, D. H.; Wieler, R. (1997)
A petrologic and isotopic study of winonaites: Evidence for early partial melting, brecciation, and metamorphism

Benedix, G. K.; McCoy, Timothy J.; Keil, K.; Bogard, D. D.; Garrison, D. H. (Pergamon-Elsevier Science Limited, 1998)
A petrologic study of the IAB iron meteorites: Constraints on the formation of the IAB-Winonaite parent body

Benedix, G. K.; McCoy, Timothy J.; Keil, K.; Love, S. G. (2000)
A petrologic, chemical and isotopic study of Monument Draw and comparison with other acapulcoites: Evidence for formation by incipient partial melting

McCoy, Timothy J.; Keil, K.; Clayton, R. N.; Mayeda, T. K.; Bogard, D. D.; Garrison, D. H.; Huss, G. R.; Hutcheon, I. D.; Wieler, R. (1996)
A pulsed neutron gamma-ray system for Mars rover missions

Trombka, Jacob I.; Starr, Richard D.; Groves, Joel; Akkurt, Hatice; Evans, Larry G.; McCoy, Timothy J.; Parsons, Ann M.; Schweitzer, Jeffrey; Amatucci, Edward; Smith, Miles T. (IEEE, 2005)
A pyroxene-oldhamite clast in Bustee: Igneous aubritic oldhamite and a mechanism for the Ti enrichment in aubritic troilite

McCoy, Timothy J. (1998)
Alkaline volcanic rocks from the Columbia Hills, Gusev crater, Mars

McSween, Harry Y.; Ruff, S. W.; Schmidt, M. (2006)
An estimate of Eros's porosity and implications for internal structure

Wilkison, Sarah L.; Robinson, Mark S.; Thomas, Peter C.; Veverka, Joseph; McCoy, Timothy J.; Murchie, Scott L.; Prockter, Louise M.; Yeomans, Donald K. (2002)
An Improved Algorithm for Unmixing First‐Order Reversal Curve Diagrams Using Principal Component Analysis

Harrison, Richard J.; Muraszko, Joy; Heslop, David; Lascu, Ioan; Muxworthy, Adrian R.; Roberts, Andrew P. (John Wiley & Sons, Incorporated for the American Geophysical Union, 2018)

First-order reversal curve (FORC) diagrams of synthetic binary mixtures with single-domain, vortex state, and multidomain end-members (EMs) were analyzed using principal component analysis (FORC-PCA). Mixing proportions ...
Analysis of MESSENGER Gamma-Ray Spectrometer data from the Mercury flybys

Rhodes, Edgar A.; Evans, Larry G.; Nittler, Larry R.; Starr, Richard D.; Sprague, Ann L.; Lawrence, David J.; McCoy, Timothy J.; Stockstill-Cahill, Karen R.; Goldsten, John O.; Peplowski, Patrick N.; Hamara, David K.; Boynton, William V.; Solomon, Sean C. (2011)

[alpha]bstract<br/>During its three flybys of Mercury, the MESSENGER spacecraft made the first detection of gamma-ray emission from the planet's surface. With a closest approach distance of ~200 km, the flybys provided ...
Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances

Dunn, Tasha L.; Cressey, Gordon; McSween, Harry Y.; McCoy, Timothy J. (2010)

Abstract2013Powder X-ray diffraction (XRD) is used to quantify the modal abundances (in wt%) of 18 H, 17 L, and 13 LL unbrecciated ordinary chondrite falls, which represents the complete petrologic range of equilibrated ...
Analysis of ordinary chondrites using powder X-ray diffraction: 2. Applications to ordinary chondrite parent-body processes

Dunn, Tasha L.; McSween, Harry Y.; McCoy, Timothy J.; Cressey, Gordon (2010)

Abstract2013We evaluate the chemical and physical conditions of metamorphism in ordinary chondrite parent bodies using X-ray diffraction (XRD)-measured modal mineral abundances and geochemical analyses of 48 type 420136 ...
Anatomy of a partially-differentiated asteroid: A 'NEAR'-sighted view of acapulcoites and lodranites

McCoy, Timothy J.; Nittler, L. R.; Burbine, T. H.; Trombka, J. I.; Clark, P. E.; Murphy, M. E. (2000)
Ancient Asteroids Enriched in Refractory Inclusions

Sunshine, J. M.; Connolly, H. C., Jr.; McCoy, Timothy J.; Bus, S. J.; La Croix, L. M. (2008)

Calcium- and aluminum-rich inclusions (CAIs) occur in all classes of chondritic meteorites and contain refractory minerals predicted to be the first condensates from the solar nebula. Near-infrared spectra of CAIs have ...
Asteroid 3628 Boznemcova: Covered with angrite-like basalts?

Cloutis, E. A.; Binzel, R. P.; McCoy, Timothy J. (2006)
Asteroid Differentiation

McCoy, Timothy J.; Mittlefehldt, D. W.; Wilson, L. (Univ. of Arizona Press, 2006)
Asteroid differentiation: Pyroclastic volcanism to magma oceans

Taylor, G. J.; Keil, Klaus; McCoy, Timothy J.; Haack, Henning; Scott, Edward R. D. (1993)

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