Papers

Takir, D., Howard, K., Yabuta, H., McAdam, M., Hibbitts, C., Emery, J.  Linking Water-Rich Asteroids and Meteorites: Implications for Asteroid Space Missions.  In Abreu, N. (ed) 2018. Primitive Meteorites and Asteroids: Physical, Chemical, and Spectroscopic Observations Paving the Way to Exploration, 450pp.  

McAdam, M. M., Sunshine, J. M., Howard, K. T., Alexander, C. M., McCoy, T. J., and Bus, S. J. 2018. Spectral Evidence for Amorphous Silicates in Least-processed CO Meteorites and Their Parent Bodies, Icarus, 306: 32-49.

Alexander, C. M. O’D., Greenwood, R. C., Bowden, R., Gibson, J. M., Howard, K. T., Franchi, I. A. 2018. A multi-technique search for the most primitive CO chondrites. Geochimica Cosmochimica Acta, 221: 406-420.

B. De Gregorio, R. Stroud, N. Abreu, K.T. Howard 2016. Determination of the Modal Abundance of Nano-Scale Amorphous Phases Using Selected Area Electron Diffraction Mapping. Microscopy & Microanalysis 22.

K.A. Dyl, G.K. Benedix, P.A. Bland, J. M. Friedrich, P. Spurný, M.  C. Towner, M.O'Keefe, K. Howard, R. Greenwood, R. J. Macke, D. T. Britt, A. Halfpenny, J.O. Thostenson, R. A. Rudolph, M. L. Rivers, A. W. R. Bevan 2016. Characterization of Mason Gully (H5): The second recovered fall from the Desert Fireball Network. Meteoritics and Planetary Science, 51: 596-613.

A. Garenne, P. Beck, G. Montes-Hernandez, O. Brissaud, B. Schmitt, E. Quirico, L. Bonal, C. Beck, K. T. Howard 2016. Bidirectional reflectance spectroscopy of carbonaceous chondrites: Implications for water quantification and primary composition.  Icarus, 264: 172-183 http://dx.doi.org/10.1016/j.icarus.2015.09.005

Howard, K.T.,  Alexander, C.M.O'D,  Schrader, D. and Dyl, K. A  2015. Classification of hydrous meteorites (CR, CM and C2 ungrouped) by phyllosilicate fraction: PSD-XRD modal mineralogy and planetesimal environments. Geochimica et Cosmochimica Act, 149: 206-222 doi:10.1016/j.gca.2014.10.025

McAdam, M., Sunshine, J., K.T. Howard, Kelly, M.S., McCoy, T.J. 2015. Aqueous Alteration on Asteroids: Linking the Mineralogy and Spectroscopy of CM and CI Chondrites.  Icarusdoi:10.1016/j.icarus.2014.09.041

Alexander, C. M.O’D., Bowden, R., Fogel, M.L, Howard, K.T. (2015). Carbonate Abundances and Isotopic Compositions in Chondrites. Meteoritics and Planetary Science, 50: 810-33.

Alberto, K., Berhanu, D., Howard, K.T.,  Inmaculada, A., , Oron, M., Reip, P., Valsami-Jones, E.,  Miren, P.C.  2014. Cytotoxicity of TiO2 nanoparticles to mussel hemocytes and gill cells in vitro: Influence of synthesis method, crystalline structure, size and additive. Nanotoxicology, doi:10.3109/17435390.2014.952362.

Howard, K.T. et al., 2013. Biomass preservation in impact melt ejecta.  Nature Geoscience6: 1018-20

Beard, A.D., HOWARD, K. Carmondy, L. &  Jones, A.P. 2013. Melanophlogite pseudomorphing combeite: A new occurrence from the 2006 eruption of Oldoinyo Lengai, Tanzania.  American Mineralogist, 98: 1998-2006.

AlexanderC.M.O.D., Howard, K.T., Bowden R., Fogel M.L. 2013. The classification of CM and CR chondrites using bulk H, C and N abundances and isotopic compositions, Geochimica et Cosmochimica Acta123, 244-260

Alexander  C.M.O.D., Bowden R., Fogel M.L., HOWARD K.T., Herd C.D.K. and Nittler L. 2012.  The provenances of asteroids, and their contributions to the volatile inventories of the terrestrial planets.  Science  337, 721-723.

Bland. P.A., Spurný, P.,  Bevan, A.W.R., HOWARD K.T., Towner, M.C.,  Benedix, G.K.,  Greenwood, R.C.,  Shrbený, L., Franchi, I.A., Deacon, G.,  Borovička, J.,  Ceplecha,Z.,  Vaughan D. & Hough R.M. 2012.  The Australian Desert Fireball Network: a new era for planetary science.  Australian Journal of Earth Sciences 59, 177-187.

Cockell C.S., Voytek M.A., Gronstal A.L., Finster K., Kirshtein J.D., HOWARD K., Reitner J., Gohm G.S., Sanford W.E., Horton J.W., Kallmeyer J., Kelly L., and Powas D.S. 2012.  Impact disruption and recovery of the deep sub-surface biosphere. Astrobiology 12 (3), 231-246.

HOWARD K.T., Benedix G.K., Bland P.A. and Cressey G. 2011. Modal Mineralogy of CM chondrites by PSD-XRD, Part 2: degree, nature and settings of aqueous alteration. Geochimica et Cosmochimica Acta  75: 2735-2751.

HOWARD K.T. 2011. Invited Review:  Volatile enhanced dispersal of high-velocity impact melt and the origin of tektites. Proceedings of the Geologists Association  122: 363-382.

HOWARD K.T., Benedix G.K., Bland P.A. and Cressey G. 2010. Modal Mineralogy of CV3 chondrites by PSD-XRD. Geochimica et Cosmochimica Acta  74: 5084-5097.

Beck P., Quirico E., Montes-Hernandez G., Bonal L., Bollard J., Orthous-Daunay F.R., HOWARD K.T., Schmitt B., Brissaud O., Deschamps F., Wunder B. and Guillot S. 2010. Hydrous mineralogy of CM and CI chondrites from infrared spectroscopy and their relationship with low albedo asteroids. Geochim et Cosmochimica Acta  74: 4881-4892.

Cockell C.S., Pybus D., Olsson-Francis K., Kelley L., Petley D., Rosser N., HOWARD K. and Mosslemans F. 2010. Characterization and Geological Microenvironment of a Microbial Community Inhabiting Weathered Receding Shale Cliffs. Microbial Ecology  61: 166-81.

Cockell C.S, Osinski G.R, Banerjee N.R, HOWARD K.T, Gilmour I. and Watson J.S. 2010. The microbe-mineral environment and gypsum neogenesis in a weathered polar evaporite. Geobiology  8: 293-308.

HOWARD K.T. 2009. Physical Distribution Trends in Darwin Glass. Meteoritics and Planetary Science  44: 115-129.

HOWARD K.T., Benedix G.K., Bland P.A. and Cressey G. 2009. Modal Mineralogy of CM2 chondrites by PSD-XRD, Part 1: total phyllosilicate abundance and the degree of aqeous alteration. Geochimica et Cosmochimica Acta  73: 4576-4589.

Bland P.A., Spurney P., Towner M.C., Bevan A.W.R., Singleton A.T., Bottke W.F., Greenwood R.C., Chesley S.R., Shrbeny L., Borovika J., Ceplecha Z., Mclafferty T.P., Vaughan D., Benedix G.K., Deacon G., HOWARD K.T., Franchi I.A. and Hough R.M. 2009.  An anomalous Basaltic Meteorite from the innermost Main Belt.  Science  325: 1525-1527.

Bailey M.J, HOWARD K.T., Kirkby K.J. and Jeynes C. 2009. Characterisation of Inhomogeneous Inclusions in Darwin Glass using Ion Beam Analysis. Nuclear Instruments & Methods, Section B 267: 2219-2214.

HOWARD K.T. 2008. Geochemistry of Darwin glass and target rocks from Darwin crater, Tasmania, Australia.  Meteoritics and Planetary Science 43: 479-496.

HOWARD K.T. and Haines P.W. 2007.  Geology of Darwin Crater, Western Tasmania, Australia.  Earth and Planetary Science Letters 260: 328-339.

Haines P.W., HOWARD K.T., Ali J.R., Burrett C.F., and Bunopas S. 2004.  Flood deposits penecontemporaneous with ~0.8 Ma tektite fall in NE Thailand: impact-induced environmental effects? Earth and Planetary Science Letters 225: 19-28.

HOWARD K.T., Haines P.W., Burrett C.F., Ali J.R. and Bunopas S. 2003.  Sedimentology of 0.8Ma log-bearing flood deposits in northeast Thailand and mechanisms for pre-flood deforestation.  Proceedings, 8th International Congress on Pacific Neogene Stratigraphy:  49-67.

Lo C.H, HOWARD K.T., Chung S.L and Meffre S 2002. Laser fusion argon-40/argon-39 ages of Darwin Impact glass. Meteoritics and  Planetary Science 37: 1555–1562.

Book Chapters

Howard K.T. 2011. Chapter 21: Tektites.  In Ridd M.R, Barberm A.J. and Crowe M. (eds) “The Geology of Thailand” Geological Society of London: ISBN 1-86239-322-2.

Recent conference abstracts

De Gregorio, B., Stroud, R., Abreu, N., HOWARD, K.T. (2016). Determination of the Modal Abundance of Nano-Scale Amorphous Phases Using Selected Area Electron Diffraction Mapping. Micros. & Microan. 22.

De Gregorio, B., Stroud, R., Abreu, N., HOWARD, K.T. (2016). Determination of the Modal Abundance of Nano-Scale Amorphous Phases Using Selected Area Electron Diffraction Mapping. Met. Soc. Conf. 79. #6430.

Greenwood, R.C., Franchi, I.A., Alexander, C.M.O’D., HOWARD, K.T. (2016). Continuing the search for the most primitive CO chondrites: the oxygen isotope perspective. Lunar and Planet. Sci. 47, #2206.

McAdam, M., Sunshine, J., HOWARD, K.T., McCoy, T.J, Alexander, C.M.O’D. (2016). Finding the most primitive asteroids: spectral identification of amorphous materials in CO chondrites. Lunar and Planet. Sci. 47, #2291

HOWARD, K.T., Davidson, J., Alexander, C.M.O’D., Abreu, N.M. (2015). The glue that holds worlds together: abundance, origin and significance of amorphous Fe,Mg silicate in Carbonaceous Chondrites. Lunar and Planet. Sci. 46, #2244.

HOWARD, K.T. & Bland, P.A. 2015. Biomass Capture and Survival in Meteorite Impacts. Lunar and Planet. Sci. 46, #2269.

McAdam, M., Sunshine, J., HOWARD K.T., Kelly, M.S., McCoy, T.J, Alexander, C.M.O’D., Davidson, J. (2015). Aqueous Alteration in CR Meteorites as seen with VIS/NIR and MIR Spectroscopy. Lunar and Planet. Sci. 46, #2540.

C. E. Nehru, M. K. Weisberg, K. HOWARD, D. S. Ebel, H. C. Connolly, J. M. Friedrich: An Unusual Dark Inclusion from the Bencubbin Breccia and Deformation in an Asteroid Regolith. Lunar and Planetary Science Conference 02/2014.

K.T. HOWARD, C. M. O'D. Alexander, K. A. Dyl: PSD-XRD Modal Mineralogy of Type 3.0 CO Chondrites: Initial Asteroidal Water Mass Fractions and Implications for CM Chondrites. Lunar and Planetary Science Conference. 02/2014.

L. A. Neil, K. T. HOWARD: Rare Inclusions in Darwin Glass: Partial Melts. Lunar and Planetary Science Conference 02/2014.

A. J. King, P. F. Schofield, K. T. HOWARD, S. S. Russell: Modal Mineralogy of CI and CI-Like Chondrites by Position Sensitive Detector X-Ray Diffraction. Lunar and Planetary Science Conference 02/2014.

C. M. O'D. Alexander, R. Bowden, K. T. HOWARD: A Mutli-Technique Search for the Most Primitive CO Chondrites. Lunar and Planetary Science Conference 02/2014.

R. C. Greenwood, K. T. HOWARD, I. A. Franchi, M. E. Zolensky, P. C. Buchanan, J. M. Gibson: Oxygen Isotope Evidence for the Relationship Between CM and CO Chondrites: Could They both Coexist on a Single Asteroid? Lunar and Planetary Science Conference 02/2014.

K .T HOWARD, C. M. O’D. Alexander: A New Classification Scheme for Aqueously Altered Carbonaceous Chondrites Based on Total Phyllosilicate Abundance. Lunar and Planetary Science Conference; 03/2013.

K. T. HOWARD, G. K. Benedix, P. A. Bland, J. Gibson, R. C. Greenwood, I. A. Franchi, G. Cressey: Non-progressive aqueous alteration of CM carbonaceous chondrites: The perspective of modal mineralogy and bulk O-isotopes. Lunar and Planetary Science Conference; 03/2013.

C . M . O’D. Alexander, R. Bowden, M. L Fogel, K.T HOWARD: Carbonate Abundances and Isotopic Compositions in Chondrites. Lunar and Planetary Science Conference; 03/2013

M. McAdam, J. M. Sunshine, K.T. Howard, M.S. Kelly, T.J. McCoy: Fe and Mg Compositional Variations of CM/CI Meteorites and Dark Asteroids. Lunar and Planetary Science Conference; 03/2013.

T Salge, J Berlin, R Terborg, K HOWARD, H Newsom, P Wozniakiewicz, M Price, M Burchell, M Cole, A Kearsley: Advanced SEM/EDS Analysis using Stage Control and an annular Silicon Drift Detector: Applications in Impact Studies from Centimetre to below Micrometre Scale. EGU General Assembly Conference; 04/2013