Dr Sami Mikhail

Dr Sami Mikhail
Lecturer; Dissertation Co-ordinator


 

The motivation for my research is to understand how the interior of a planet affects and controls the composition of its surface, and how volcanic degassing relates to long-term habitability.

In short, I want to understand the pathways followed by volatile elements subducted into Earth’s mantle over geological timescales, with a strong emphasis on constraining the origin(s) of diamond-forming carbon in the mantle, and the nature of the tectonic volatile cycle(s).

I also work towards understanding the formation and deep-time evolution of extra-terrestrial planetary atmospheres, such as those around Venus and Mars.

source: symbiosis

 

Recent publications listed in research@st-andrews
Smith, CB, Walter, MJ, Bulanova, GP, Mikhail, S, Burnham, AD, Gobbo, L & Kohn, SC 2016, 'Diamonds from Dachine, French Guiana: a unique record of Early Proterozoic subduction' Lithos, vol 265, pp. 82-95. DOI: 10.1016/j.lithos.2016.09.026
McCubbin, F, Vander Kaaden, K, Tartèse, R, Boyce, J, Mikhail, S, Whitson, E, Bell, A, Anand, M, Franchi, I, Wang, J & Hauri, E 2015, 'Experimental investigation of F, Cl, and OH partitioning between apatite and Fe-rich basaltic melt at 1.0-1.2 GPa and 950-1000 °C' American Mineralogist, vol 100, no. 8-9, pp. 1790-1802. DOI: 10.2138/am-2015-5233
Howell, D, Stern, R, Griffin, W, Southworth, R, Mikhail, S & Stachel, T 2015, 'Nitrogen isotope systematics and origins of mixed-habit diamonds' Geochimica et Cosmochimica Acta, vol 157, pp. 1-12. DOI: 10.1016/j.gca.2015.01.033
Bulanova, G, Wiggers de Vries, D, Pearson, DG, Beard, A, Mikhail, S, Smelov, A & Davies, G 2014, 'An eclogitic diamond from Mir pipe (Yakutia), recording two growth events from different isotopic sources' Chemical Geology, vol 381, pp. 40-54. DOI: 10.1016/j.chemgeo.2014.05.011
Mikhail, S, Guillermier, C, Franchi, I, Beard, A, Krispin, C, Verchovsky, A, Jones, A & Milledge, HJ 2014, 'Empirical evidence for the fractionation of carbon isotopes between diamond and iron carbide from the Earth’s mantle' Geochemistry, Geophysics, Geosystems, vol 15, no. 4, pp. 855–866. DOI: 10.1002/2013GC005138
Mikhail, S, Verchovsky, A, Howell, D, Hutchison, M, Southworth, R, Thomson, A, Warburton, P, Jones, A & Milledge, HJ 2014, 'Constraining the internal variability of the stable isotopes of carbon and nitrogen within mantle diamonds' Chemical Geology, vol 366, pp. 14-23. DOI: 10.1016/j.chemgeo.2013.12.014

Contact Details:

Dr Sami Mikhail
Irvine Building
University of St Andrews
North Street
St Andrews
KY16 9AL
Fife
UK

tel: 01334 463915
fax:
room: 425
email: sm342@st-andrews.ac.uk

Related:

research@st-andrews
Personal Website
School of Geography and Geosciences
STAIG
Centre for Exoplanet Science

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