Scientific Meetings

Conference Papers:

1. 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

2. 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

3. 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

4. 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

5. 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

6. Hammett, M., Jones, R.H., & Tartese, R. (2022) Formation conditions of B-type Calcium-Aluminium-Inclusions in CV chondrites: a comparison of natural CAIs and experimental analogues, 85th Annual Meeting of the Meteoritical Society, #6085

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

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

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

16. 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

17. 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

18. Mitchell, J.T., Tomkins, A.G., Newton, C. & Johnson, T.E. (2021), The evolving crust of 4 Vesta from compositional and thermal modelling, 52nd Lunar and Planetary Science Conference, #1576

19. 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

20. 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

21. 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

22. 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, ****

23. 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, ****

24. 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

25. Mitchell, J.T. & Tomkins, A.G. (2019), Compositional diversity of diogenites: variable fO2 and post-eucritic magmatism, LPI Contributions 2157, 6065

26. 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, ****

27. Mitchell, J.T. & Tomkins, A.G. (2019), Constraining ejecta blanket conditions of Dhofar 018 form a single pristine chondrule, SSERVI Australia

28. 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, ****

29. Mitchell, J.T. & Tomkins, A.G. (2018), On the origin of olivine diogenites and diogenites: compositional diversity linked to variable fO2, 22nd Meeting of the International Mineralogical Association, #IMA2018-1393

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

31. 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

32. 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

33. 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

34. 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

35. 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

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

37. 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

38. 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

39. 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, ****

40. 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

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

42. 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

43. 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

44. 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