Natasha Stephen

Daly, L., Suttle, M.D., Lee, M.R., Bridges, J., Hicks, L., Martin, P-E.M.C., Floyd, C.J., Jenkins, L.E., Salge, T., King, A.J., Almeida, N.V., Johnson, D., Trimby, P.W., Mansour, H., Wadsworth, F.B., Rollinson, G., Genge, M.J., Darling, J., Bagot, P.A.J., White, L.F., Stephen, N.R., Mitchell, J.T., Griffin, S., Willcocks, F.M., Jones, R., Piazolo, S., Einsle, J.F., Macente, A., Hallis, L.J., O'Brien, A., Schofield, P.F., Russell, S.S., Bates, H., Smith, C., Franchi, I., Forman, L.V., Bland, P.A., Westmoreland, D., Anderson, I., Taylor, R., Montgomery, M., Parsons, M., Vasseur, J., van Ginneken, M., Wozniakiewics, P.J., Burchell, M.J., Hallatt, D., Alesbrook, L.S., Spathis, V., Worden, R., Behnsen, J., Black, K., and the UK Fireball Alliance (2024) Brecciation at the grain scale within the lithologies of the Winchcombe CM carbonaceous chondrite, Meteoritics & Planetary Science, DOI (Open Access)

Greenwood, R.C., Findlay, R., Martins, R., Steele, R.C.J., Shaw, K., Morton, E., Savage, P.S., Murphy, M.E., Rehkämper, M., Franchi, I.A., Elliot, T., Suttle, M.D., King, A.J., Anand, M., Malley, J., Howard, K., Zhao, X., Johnson, D., Liu, M-C., McCain, K. & Stephen, N.R. (2023) The formation and aqueous alteration of CM2 chondrites and their relationship to CO3 chondrites:  A fresh isotopic (O, Cd, Cr, Si, Te, Ti and Zn) perspective from the Winchcombe CM2 fall, Meteoritics & Planetary Science, DOI (Open Access) 

Tomkins, A.G.,  Wilson, N.C., MacCrae, C.M, Salek, A., Field, M., Brand, H.E.A., Langendam, A.D., Stephen, N.R., Torpy, A., Pinter, Z., Jennings, L.A., McCulloch, D. (2023) Reply to Németh and Garvie: Evidence for lonsdaleite in ureilite meteorites, Proceedings of the National Academy of Sciences, 120, 20, DOI

Whitworth, A.J., Brand, H.E.A., Wilson, S.A., Grey, I.E., Stephen, N.R., Gozukara, Y. & Frierdich, A.J. (2023) The occurrence of monoclinic jarosite in natural environments, American Mineralogist 108 (3), 584-594 DOI

Russell, S.S., King, A.J., Bates, H.C., Almeida, N.V., Greenwood, R.C., Daly, L., Joy, K.H., Rowe, J., Salge, T., Smith, C.L., Grindrod, P., Boazman, S., Bond, L., Bond V., Casey, C., Dickeson, Z., Ensor, G., Farrelly, G., Godfrey, P., Hallis, L.J., Ihasz, M., Kirk, D., Jackson, L., Lee M.R., Mayne, B., McMullan, S., Mounsey, A., Mounsey, S.E., Mounsey, S., Motaghian, S., Naqvi, S., O’Brien, A., Pickersgill, A., Skilton, D., Spencer, I., Stephen, N.R., Suttle, F., Suttle, M.D., Tartese, R., Weir, C., Wilcock, C., Wilcock, H., Wilcock, R. (2023) Recovery and Curation of the Winchcombe (CM2) meteorite, Meteoritics & Planetary Science, DOI (Open Access)

Genge, M.J., Alesbrook, L., Almeida, N.V., Bates, H.C., Bland, P.A., Boyd, M.R., Burchell, M.J., Collins, G.S., Cornwell, L.T., Daly, L., Devillepoix, H.A.R., Van Ginneken, M., Greshake, A., Hallatt, D., Hamann, C., Hecht, L., Jenkins, L.E., Johnson, D., Jones, R., King, A.J., Masour, H., McMullan, S., Mitchell, J.T., Rollinson, G., Russell, S.S., Schröder, C., Stephen, N.R., Suttle, M.D., Tandy, J.D., Trimby, P., Sansom, E.K., Spathis, V., Willcocks, F.M. & Wozniakiewicz, P.J. (2023) The fusion crust of the Winchcombe meteorite: A preserved record of atmospheric entry processes, Meteoritics & Planetary Science, DOI (Open Access)

Suttle, M.D., Daly, L., Jones, R.H., Jenkins, L., Van Ginneken, M., Mitchell, J.T., Bridges, J.C., Hicks, L.J.,  Johnson, D., Rollinson, G., Taylor, R.,  Genge, M.J., Schröder, C., Trimby, P., Mansour, H., Piazolo, S., Bonsall, E., Salge, T., Heard, R., Findlay, R., King, A.J., Bates, H.C., Lee, M.C., Stephen, N.R., Willcocks, F.M., Greenwood, R.C., Franchi, I.A., Russell, S.S., Harrison, C.S., Schofield, P.F., Almeida, N.V., Floyd, C., Martin, P-E., Joy, K.H., Wozniakiewicz, P.J., Hallatt, D., Burchell, M., Alesbrook, L.S., Spathis, V., Cornwell, L.T., Dignam A. (2022) The Winchcombe meteorite – a regolith breccia from a rubble-pile CM chondrite asteroid, Meteoritics & Planetary Science, DOI Open Access

King, A.J., Daly, L., Rowe, J., Joy, K.H., Greenwood, R.C., Devillepoix, H.A.R., Suttle, M.D., Chan, Q.H.S, Russell, S.S., Bates, H.C,,Bryson, J.F.J., Clay, P.L., Vida, D., Lee, M.R., O’Brien, A., Hallis, L., Stephen, N.R., Tartèse, R., Sansom, E.K., Towner, M.C., Cupak, M., Shober, P.M., Bland, P.A., Findlay, R., Franchi, I.A., Verchovsky, A.B., Abernethy, F.A.J., Grady, M.M., Floyd, C.J., Van Ginneken, M., Bridges, J., Hicks, L., Jones, R.H., Mitchell, J.T., Genge, M.J., Jenkins, L., Martin, P-E.M.C., Sephton, M.A., Watson, J.S., Salge, T., Shirley, K.A., Curtis, R.J., Warren, T.J., Bowles, N.E., Stuart, F.M., Di Nicola, L., Györe, D., Boyce, A.J., Shaw, K.M.M., Elliott, T., Steele, R.C.J., Povinec, P., Laubensteinm M., Sanderson, D., Cresswell, A., Jull, A.J.T., Sýkora, I., Sridhar, S., Harrison, R.J., Willcocks, F.M., Harrison, C.S. , Hallatt, D., Wozniakiewicz, P.J., Burchelll, M.J., Alesbrook, L.S., Dignam, A., Almeida, N.V., Smith, C.L., Clark, B., Humphreys-Williams, E.R., Schofield, P.F., Cornwell, L.T., Spathis, V., Morgan, G.H., Perkins, M.J., Kacerek, R., Campbell-Burns, P., Colas, F., Zanda, B., Vernazza, P., Bouley, S., Hankey, M., Collins, G.S., Young, J.S, Shaw,C., Horak, J., Jones, D., James, N., Bosley, S., Shuttleworth, A., Dickinson, P., McMullan, I., Robson, D., Smedley, A.R.D., Stanley, B., Bassom, R., McIntyre, M., Suttle, A.A., Fleet, R., Bastiaens, L., Ihasz, M., McMullan, S., Boazman, S.J., Dickeson, Z.I., Grindrod, P.M., Pickersgill, A.E., Weir, C.J., Suttle, F.M., Farrelly, S., Spencer, I., Naqvi, S., Mayne, B., Skilton, D., Kirk, D., Mounsey, A., Mounsey, S., Mounsey, S.E., Godfrey, P., Bond, L., Bond, V., Wilcock, C., Wilcock, H. & Wilcock, R. (2022)  The Winchcombe Meteorite, a Unique and Pristine Witness from the Outer Solar System, Science Advances, 6, 46, DOI (Open Access)

Tomkins, A.G.,  Wilson, N.C., MacCrae, C.M, Salek, A., Field, M., Brand, H.E.A., Langendam, A.D., Stephen, N.R., Torpy, A., Pinter, Z., Jennings, L.A., McCulloch, D. (2022) Sequential lonsdaleite to diamond formation in ureilite meteorites via in-situ chemical/fluid vapor deposition, Proceedings of the National Academy of Sciences, 119 DOI 

Langendam, A., Tomkins, A.G., MacRae, C., Wilson, N., Evans, K. & Stephen, N.R. (2021) CHOS gas/fluid-induced reduction in Ureilites, Meteoritics and Planetary Science, DOI

Staddon, L., Darling, J.R., Schwarz, W.H., Stephen, N.R., Schuindt, S., Dunlop, J. & Tait, K.T. (2021) Dating the age of martian mafic crust; microstructurally constrained baddeleyite geochronology of enriched shergottites Zagami, Northwest Africa (NWA) 7257 and NWA 8679, Geochimica et Cosmochimica Acta, 315, 73-88, DOI (Open Access)

Wenzel, A., Filiberto, J., Stephen, N.R., Schwenzer, S.P. & Hammond, S.J. (2021) Constraints on the petrologic history of gabbroic shergottite Northwest Africa 6963 from pyroxene zoning profiles and electron backscattered diffraction, Meteoritics & Planetary Science 56, 1744-1757, DOI 

Tomkins, A.G., Alkemade, S.L., Nutku, S.E., Stephen, N.R., Finch, M.A. & Jeon, H (2020) A small S-MIF signal in Martian regolith pyrite: Implications for the atmosphere, Geochimica et Cosmochimica Acta 290, 59-75 DOI

Giles, S., Jackson, C. & Stephen, N.R. (2020) Barriers to fieldwork in undergraduate geoscience degrees, Nature Reviews Earth & Environment 1, 2, 77-78 DOI

MacArthur, J. L., Bridges, J. C., Hicks, L. J., Burgess, R., Joy, K. H., Branney, M. J., Hansford, G. M., Baker, S. H., Schwenzer, S. P., Gurman, S. J., Stephen, N. R., Steer, E. D., Piercy, J. D. & Ireland, T. R. (2019) Mineralogical constraints on the thermal history of martian regolith breccia Northwest Africa 8114, Geochimica et Cosmochimica Acta 246 267-298 DOI (Open Access)

King, A. J., Schofield, P. F., Stephen, N. R., Frogley, M. D., Cinque, G. & Russell, S. S. (2018)  Investigating the history of volatiles in the solar system using synchrotron infrared micro-spectroscopy, Infrared Physics & Technology 94 244-249 DOI (Open Access)

Berry, A. J., Schofield, P. F., Kravtsova, A.N., Miller, L. A., Stephen, N. R., Walker, A.M., Soldatov, A. V., Ireland, T.R. & Geraki, K. (2017) The limitations of hibonite as a single-mineral oxybarometer for early solar system processes, Chemical Geology 466 32-40 DOI

Mitchell, J.T., Willcocks, F.M., & Stephen, N.R. (2023) Electron Backscatter Diffraction (EBSD) analysis of fayalite veins in polymict eucrite Northwest Africa 6414, 86th Annual Meeting of the Meteoritical Society, #6150

Willcocks, F.M., Mitchell, J.T. & Stephen, N.R. (2023) Real science in real time; how Microscopy Live! has introduced planetary science to a non-specialist audience, LPI Contributions, 2806, 1950

Mitchell, J.T., Willcocks, F.M., & Stephen, N.R. (2023) Fayalite in polymict eucrite Northwest Africa 6414: evidence of metasomatism and fayalite-bearing magmas on the HED parent body?, LPI Contributions, 2806, 1492

Mitchell, J.T., Willcocks, F.M., & Stephen, N.R. (2022), Northwest Africa 6414 classified after 10 years: A complex polymict eucrite of at least nine lithological groups, 85th Annual Meeting of the Meteoritical Society, #6017

Willcocks, F.M., Stephen, N.R., Grimes, S.T., & Mitchell, J.T. (2022), A new terrestrial analogue for Martian volcanism: An unexpected match for the shergottite meteorites,  85th Annual Meeting of the Meteoritical Society, #6018

Greenwood, R.C., Findlay, R., Martins, R., Steele, R.C.J., Rehkamper, M., Shaw, K., Savage, P.S., Morton, E., Franchi, I.A., Elliott, T., Suttle, M.D., King, A.J., Anand, M., Malley, J., Zhao, X., Johnson, D., Liu, M-C., McCain, K. & Stephen, N.R. (2022) Cr, Cd, Si, Te, Ti, Zn and O-isotope composition of the Winchcombe (CM2) meteorite, 85th Annual Meeting of the Meteoritical Society, #6356

Darling, J.R., Staddon, L.G., Tait, K.T., Schwarz, W.H., Sheen, A.I., Herd, C.D.K., Stephen, N.R., Martin, S. & Dunlop, J. (2022) Accessory mineral U-Th-Pb chronology of late Amazonian magmatism recorded by enriched Shergottites, 85th Annual Meeting of the Meteoritical Society, #6360

Staddon, L.G., Darling, J.D., Righter, M., Lapen, T.J., Dunlop, J. & Stephen. N.R. (2022) Petrogenesis and isotope systematics of augite-rich Martian meteorite Northwest Africa (NWA) 13467, 85th Annual Meeting of the Meteoritical Society, #6455

Suttle, M.D., Daly, L., Jones, R.H., Jenkins, L., Van Ginneken, M., Mitchell, J.T., Bridges, J.C., Hicks, L.J., Johnson, D., Rollinson, G., Taylor, R., Genge, M.J., Schröder, C., Trimby, P., Mansour, H., Piazolo, S., Bonsall, E., Salge, T., Heard, R., Findlay, R., King, A.J., Bates, H.C., Lee, M.R., Stephen, N.R., Willcocks, F.M., Greenwood, R.C., Franchi, I.A., Russell, S.S., Harrison, C.S., Schofield, P.F., Almeida, N.V., Floyd, C., Martin, P-E., Joy, K.H., Wozniakiewicz, P.J., Hallatt, D., Burchell, M.J., Alesbrook, L.S., Spathis, V., Cornwell, L.C. & Dignam, A. (2022), Geological history of the Winchcombe meteorite - a new CM chondrite fall, 85th Annual Meeting of the Meteoritical Society, #6076

Daly, L., Suttle, M.D., Lee, M.R., Bridges, J., Hicks, L., Martin, P-E., Floyd, C., Jenkins, L., Salge, T., King, A.J., Almeida, N., Johnson, D., Trimby, P., Mansour, H., Wadsworth, F., Rollinson, G., Genge, M.J., Darling, J., Bagot, P., White, L.F., Stephen, N.R., Mitchell, J.T., Willcocks, F.M., Jones, R., Piazolo, S., Einsle, J.F., Macente, A., Hallis, L.J., Schofield, P.F., Russell, S.S., Bates, H.C., Smith, C., Franchi, I.A., Bland, P.A., Forman, L.V., Westmoreland, D., Anderson, I., Taylor, R., Mongtgomery, M., Parsons, M., UK Fireball Alliance (2022), A coordinated approach to investigate the heterogeneity of aqueous alteration at the micro-scale in the Winchcombe meteorite, a CM fall, 85th Annual Meeting of the Meteoritical Society, #6262

Martin, P-E.M.C., King, A.J., Mitchell, J.T., Stephen, N.R., Trimby, P., Van Ginneken, M., Salge, T., Almeida, N.V., Willcocks, F.M., Daly, L. & Lee, M.R. (2022), Calcium-aluminium-rich inclusion populations within the Winchcombe CM2 meteorite breccia, 85th Annual Meeting of the Meteoritical Society, #6358

Genge, M.J., Alsebrook, L.S., Almeida, N.V., Bates, H.C., Bland, P.A., Boyd, M.R., Burchell, M.J., Collins, G.S., Cornwell, L.T., Daly, L., Devillepoix, H.A.R., van Ginneken, M., Greshake, A., Hallatt, D., Hamann, C., Hecht, L., Jenkins, L.E., Johnson, D., Jones, R., King, A.J., Mansour, H., McMullan, S., Mitchell, J.T., Rollinson, G., Russell, S.S., Schroder, C., Stephen, N.R., Suttle, M.D., Tandy, J.D., Trimby, P., Sansom, E., Spathis, V., Willcocks, F.M., Wozniakiewicz, P.J. (2022), The fusion crust of the Winchcombe meteorite: Vigorous degassing during atmospheric entry, 85th Annual Meeting of the Meteoritical Society, #6345

Mitchell, J.T., Tomkins A.G., Wilson, N.C., Howard, D.L., Fang, X. & Stephen, N.R. (2022) A single chondrule preserved in a petrographic thin section of Howardite Dhofar 018, LPI Contributions 2678, 1184

Staddon, L.G., Darling, J.R., Dunlop, J. & Stephen, N.R. (2022) North West Africa (NWA) 13467: A new augite-rich Shergottite? LPI Contributions 2678, 2212

Staddon, L., Darling, J., Schwarz, W., Stephen, N., Schuindt, S., Dunlop, J., & Tait, K. (2021) Combined microstructural analysis and in-situ U-Pb chronology of baddeleyite within shergottites, Goldschmidt, https://doi.org/10.7185/gold2021.7956  

Willcocks, F., Grimes, S.T. & Stephen, N.R. (2021) Comparative Planetology of the Inner Solar System; Using Flood Basalts on the Moon (Lunar Maria), Mars (Tharsis and Elysium) and Earth to Investigate the Magmatic Evolution of Our Solar System, LPI Contributions 2609, 6061

Mitchell, J.T., Stephen, N.R. & Tomkins, A.G. (2021) Sampling an Impact Melt Sheet with Unusual Diogenite Northwest Africa 5480, LPI Contributions 2609, 6008

Staddon, L.G., Darling, J.R., Schwarz, W.H., Stephen, N.R., Schuindt, S., Dunlop, J. & Tait, K.T. (2021) Combined microstructural analysis and in-situ U-Pb chronology of baddeleyite within shergottites Northwest Africa (NWA) 7257, NWA 8679 and Zagami, EGU General Assembly, EGU21-10792, https://doi.org/10.5194/egusphere-egu21-10792 

Ross, A.J., Stephen, N.R. & Downes, H. (2021) Identification of Coexisting Ortho-and Clinopyroxene by Electron Backscatter Diffraction in Chemically Homogenous" Enstatite" Grains in Almahata Sitta Ureilites (2021) Lunar & Planetary Science Conference 2548, 2384

Staddon, L.G., Darling, J.R., Schwarz, W.H., Stephen, N.R., Schuindt, S., Dunlop, J. & Tait, K.T. (2021) Microstructurally Constrained Geochronology of Baddeleyite Within Shergottites Northwest Africa (NWA) 7257, NWA 8679, and Zagami, Lunar & Planetary Science Conference 2548, 1875

Filiberto, J. Meado, A.L., Stephen, N.R.,Schwenzer, S.P. & Hammond, S. J. (2020) Petrogenetic history of NWA 6963 as revealed by element zoning and textural analysis of augite and pigeonite, Geological Society of America, 141-7, https://doi.org/10.1130/abs/2020am-352016   

Brand, H.E.A., Stephen, N.R. & Martin, D.J.P. (2020) Bulk and Thermal Properties of Planetary Analogue Simulants and Martian Meteorites, Lunar & Planetary Science Conference, 1628

Staddon, L.G., Darling, Stephen, N.R., Dunlop, J. & Tait, K.T. (2020) Baddeleyite Microstructures in Variably Shocked Martian Meteorites: An Opportunity to Link Shock Barometry and Robust Geochronology, Lunar & Planetary Science Conference, 2302

Stephen, N.R., Brand, H.E.A. & Tomkins, A.G. (2019) Meteorites of the Nullarbor Plain; Recent Recovery and Classification Efforts, LPI Contributions 2157, 6136

Brand, H.E.A., Langendam, A.D., Whitworth, A.J., Alkemade, A.L., Mitchell, J.T., Davis, A., Stephen, N.R. & Tomkins, A.G. (2019) Meteorites on the Nullarbor Plain, Insights from Synchrotron Powder Diffraction, Lunar & Planetary Science Conference, 1361

Stephen, N.R. (2018) Linking Martian Breccias Northwest Africa 11220 and Northwest Africa 7034 to the Martian Meteorite Family; Revisiting the Martian Nomenclature, Lunar & Planetary Science Conference, 1460

Mitchell, J.T. & Stephen, N.R. (2016) Revisiting NWA 3141, 8266 and 8594; Two Eucrites and a Howardite?, LPI Contributions 1921, 79, 6224

Stephen, N.R. (2016) Spatially Resolved Mid-IR Spectra from Meteorites; Linking Composition, Crystallographic Orientation and Spectra on the Micro-Scale, LPI Contributions 1921, 79, 6223

Stephen, N.R. & Dijkstra, A.D. (2015) Constraining Pigeonite on Mars; Further Developments in Resolving Zoned Pyroxenes Within the Martian Meteorites, LPI Contributions 1856, 78, 5394

Michalski, J., Cuadros, J., Dekov, V., Dyar, M.D., Bishop, J.L. & Stephen, N.R. (2014) Constraints on the crystal chemistry of Martian Fe/Mr-rich smectitic clays; links to global alteration trends and protoliths, GSA Annual Meeting, Vancouver, British Columbia, Canada

Stephen, N.R., Schofield, P.F. & Berry, A.J. (2014) Mid-IR mapping of Martian meteorites with 8 micron spatial resolution, LPI Contributions 1800, 77, 5185

Stephen, N.R., Schofield, P.F., Berry, A.J. & Donaldson, P. (2014) Mid-IR Mapping of Martian Meteorites; Spatially Resolved Mineral Spectra from a Synchrotron Source, LPI Contributions 1777, 1378

Stephen, N.R. & Ross, A.J. (2014) Examining the Petrology of" Martian" Meteorite NWA 7034; A Polymict Fragmental Breccia, LPI Contributions 1777, 2924

Stephen, N.R., Genge, M.J., Russell, S.S. & Schofield, P.F. (2013) Turning Tissint Inside Out; Searching for its Launch Pair (s) from Mars, LPI Contributions 1719, 2131

Stephen, N.R., Genge, M.J. & Russell, S.S. (2012) The Tissint Meteorite: A Pristine and Unique Sample of the Martian Sub-Surface, Meteoritics & Planetary Science Supplement, 75, 5234

Stephen, N.R., Benedix, G.K. & Genge, M.J. (2012) The effect of composition and zoning on infra-red spectra of the Martian silicate minerals, Lunar & Planetary Science Conference, 

Stephen, N.R., Benedix, G.K., Bland, P., Berlin, J., Salge, T. & Goran, D. (2011) EBSD analysis of the shergottite meteorites: New developments within the technique and their implication on what we know about the preferred orientation of Martian minerals, AGU Fall Meeting, P31B-1709

Stephen, N.R., Benedix, G.K. & Bland, P. (2011) Extracting pyroxene mineral spectra from Martian meteorites, Meteoritics & Planetary Science, 46, A223

Stephen, N.R., Benedix, G.K., Bland, P. & Hamilton, V.E. (2010) Martian Pyroxenes in the Shergottite Meteorites; Zagami, SAU005, DAG476 and EETA79001, AGU Fall Meeting, P51B-1423

Stephen, N.R., Benedix, G.K., Bland, P., Hamilton, V.E., Mariani, E. & Prior, D.J. (2010) Preferred Orientation Relationships of Olivine and Pyroxene in the Shergottite Martian Meteorites, Meteoritics & Planetary Science, 45, A196

Stephen, N.R., Benedix, G.K., Bland, P., Howard, K.T. & Hamilton, V.E. (2010) Modal mineralogy of the Martian meteorite Zagami, LPI Contributions 1553, 2367