Publications

Davies, E. J., M. S. Duncan, S. Root, R. G. Kraus, D. K. Spaulding, S. B. Jacobsen, S. T. Stewart. (2021) Temperature and density on the forsterite liquid-vapor phase boundary. Journal of Geophysical Research-Planets, 126: e2020JE006745. doi: 10.1029/2020JE006745

Stewart, S. T., E. J. Davies, M. S. Duncan, S. J. Lock, S. Root, J. P. Townsend, R. G. Kraus, R. Caracas, S. B. Jacobsen. (2020) Shock physics of giant impacts: Key requirements for the equations of state. AIP Conference Proceedings, 2272, 080003. doi: 10.1063/12.0000946

Muth, M.*, M. S. Duncan, R. Dasgupta. (2020) The effect of variable Na/K on the CO₂ content of slab-derived rhyolitic melts. In Carbon in Earth’s Interior (ed. C. E. Manning, J.-F. Lin, W. L. Mao). doi: 10.1002/9781119508229.ch17

Stewart, S. T., E. J. Davies, M. S. Duncan, S. J. Lock, S. Root, J. P. Townsend, R. G. Kraus, R. Caracas, S. B. Jacobsen. (2019) Equation of State Model Forsterite-ANEOS-SLVTv1.0G1: Documentation and Comparisons (Version v1.0.0). Zenodo. doi: 10.5281/zenodo.3478631

Duncan, M. S., N. C. Schmerr, C. M. Bertka, Y. Fei. (2018) Extending the solidus for a model ion-rich martian mantle composition to 25 GPa. Geophysical Research Letters, 45: 10,211–10,220. doi: 10.1029/2018GL078182

Garber, J. M., S. Maurya, J.-A. Hernandez, M. S. Duncan, L. Zeng, H. Zhang, U. Faul, C. A. McCammon, J.-P. Montagner, L. N. Moresi, B. A. Romanowicz, R. L. Rudnick, L. P. Stixrude. (2018) On the origin of high shear wave velocities in the deep roots of cratons. Geochemistry, Geophysics, Geosystems, 19: 2062–2086. doi: 10.1029/2018GC007534.

Duncan, M. S. and R. Dasgupta. (2017) Rise of Earth’s atmospheric oxygen controlled by efficient subduction of organic carbon. Nature Geoscience, 10, 387. doi: 10.1038/ngeo2939.

Duncan, M. S., R. Dasgupta, K. Tsuno. (2017) Experimental determination of CO₂ content at graphite saturation along a natural basalt-peridotite melt join: Implications for the fate of carbon in Terrestrial Magma Oceans. Earth and Planetary Science Letters, 466: 115–128. doi: 10.1016/j.epsl.2017.03.008

Duncan, M. S. and R. Dasgupta. (2015) Pressure and temperature dependence of CO₂ solubility in hydrous rhyolitic melt – Implications for carbon transfer to mantle source of volcanic arcs via partial melt of subducting crustal lithologies. Contributions to Mineralogy and Petrology, 169:54. doi: 10.1007/s00410-015-1144-5

Chi, H., R. Dasgupta, M. S. Duncan, N. Shimizu. (2014) Partitioning of carbon between Fe-rich alloy melt and silicate melt in a magma ocean – Implications for the abundance and origin of volatiles in Earth, Mars, and the Moon. Geochimica et Cosmochimica Acta, 139: 447–471. doi: 10.1016/j.gca.2014.04.046

Duncan, M. S. and R. Dasgupta. (2014) CO₂ solubility and speciation in rhyolitic sediment partial melts at 1.5-3.0 GPa – Implications for carbon flux in subduction zones. Geochimica et Cosmochimica Acta, 124: 328–347. doi: 10.1016/j.gca.2013.09.026

Duncan, M. S. and C. B. Agee. (2011) The partial molar volume of carbon dioxide in peridotite partial melt at high pressure. Earth and Planetary Science Letters, 312: 429–436. doi: 10.1016/j.epsl.2011.10.021

van Kan Parker, M., C. B. Agee, M. S. Duncan, W. van Westrenen. (2011) Compressibility of molten Apollo 17 orange glass and implications for density crossovers in the lunar mantle. Geochimica et Cosmochimica Acta, 75: 1161–1172. doi: 10.1016/j.gca.2010.11.022

Press about research

2017

Rice University press release about my research: http://news.rice.edu/2017/04/25/study-early-organic-carbon-got-deep-burial-in-mantle-2/

Deep Carbon Observatory press release: https://deepcarbon.net/feature/deep-burial-organic-carbon-mantle-enabled-%E2%80%9Cgreat-oxidation-event%E2%80%9D

Live Science article: http://www.livescience.com/58827-how-early-earth-got-its-oxygen.html

2018

Inverse article: https://www.inverse.com/article/47074-diamond-quadrillion-tons-craton-roots

Scientific Presentations (Invited)

Duncan, M. S. (2020) Gordon Research Conference: Deep Carbon Science – Canceled

Duncan, M. S. and R. Dasgupta. (2017) The rise of oxygen in the Earth’s atmosphere controlled by the efficient subduction of organic carbon. AGU Fall Meeting, V21B-07. (12 Dec 2017)

Duncan, M. S. and R. Dasgupta. (2017) The rise of oxygen in the atmosphere and the carbon subduction cycle. University of Texas Institute for Geophysics Seminar (14 Apr 2017)

Duncan, M. S. and R. Dasgupta. (2016) The carbon cycle of terrestrial magma oceans – Experimental constraints of CO₂ solubility in peridotite. University of Maryland Geochemistry Seminar (30 Mar 2016)

Scientific Presentations and Abstracts

*Bose, P., M. S. Duncan, S. D. King. (2022) Investigating Mercury’s mantle evolution through both geophysical and geochemical analyses. 53rd LPSC, #1704. [Poster Presentation]

M. S. Duncan, *McGroarty, F. C., M. B. Weller. (2022) A combined geochemical and geodynamic perspective on the thermochemical evolution of Mars. 53rd LPSC, #2416. (10 Mar 2022)

*McGroarty, F. C., M. S. Duncan, M. B. Weller. (2021) Modeling the thermal and chemical evolution of the martian lithosphere through time. 52nd LPSC, #2672. [Poster Presentation]

*Bose, P., M. S. Duncan, S. D. King. (2021) Using MESSENGER data to model the thermochemical evolution of Mercury’s interior. 52nd LPSC, #2091. [Poster Presentation]

*McGroarty, F. C., M. S. Duncan, M. B. Weller. (2020) Evaluating the thermal and geochemical evolution of Mars. AGU Fall Meeting, DI024-0020. [Poster Presentation]

*Bose, P., M. S. Duncan, S. D. King. (2020) Using MESSENGER data to model the thermochemical evolution of Mercury’s interior. AGU Fall Meeting, P078-0006. [Poster Presentation]

*McGroarty, F. C., M. S. Duncan, M. B. Weller. (2020) Thermal evolution of the martian crust through time. 51st LPSC, #2928. (talk canceled due to Covid-19)

Davies, E. J., P. J. Carter, M. S. Duncan, S. T. Stewart, S. B. Jacobsen. (2020) Thermodynamics of impact generated vapor plumes after dispersal of the solar nebula. 51st LPSC, #2927. [Poster Presentation] – canceled due to Covid-19

Duncan, M. S., E. Davies, S. Root, D. Spaulding, S. Stewart, S. Jacobsen. (2019) Variations in moderately volatile elements in planetary bodies from impact vaporization. AGU Fall Meeting, V52A-05. (13 Dec 2019)

Stewart, S. T., E. Davies, M. S. Duncan, S. J. Lock, S. Root, J. P. Townsend, R. G. Kraus, R. Caracas, S. B. Jacobsen, Z. Li. (2019) Integrative approaches to building planet Earth: New wide-ranging equations of state. AGU Fall Meeting, P43D-3500. [Poster Presentation]

Duncan, M. S., E. J. Davies, S. Root, D. E. Bliss, D. K. Spaulding, R. G. Kraus, S. T. Stewart, S. Jacobsen. (2019) Building planets one high velocity impact at a time: Silicate vapor curve experiments. 50th LPSC, #2116. [Poster Presentation]

Davies, E. J., P. J. Carter, M. S. Duncan, S. Root, D. K. Spaulding, R. G. Kraus, S. T. Stewart, S. Jacobsen. (2019) Impact generated vapor plumes after dispersal of the solar nebula. 50th LPSC, #1256. [Poster Presentation]

Davies, E. J., S. Root, P. J. Carter, M. S. Duncan, D. K. Spaulding, R. G. Kraus, S. T. Stewart, S. Jacobsen. (2019) Impact vaporization criteria during planet formation. 50th LPSC, #1257. [Poster Presentation]

Duncan, M. S., E. J. Davies, S. Root, D. E. Bliss, D. K. Spaulding, B. A. Chidester, S. T. Stewart, S. B. Jacobson. (2018) Vaporizing forsterite: Implications for planetary accretion and distribution of the moderately volatile elements. AGU Fall Meeting, DI11B-0004. [Poster Presentation]

Duncan, M. S., M. B. Weller, J. K. Wicks, N. R. Knezek. (2018) Mars: From core to mantle. Goldschmidt Meeting. [Poster presentation]

Duncan, M. S., N. C. Schmerr, M. B. Weller, C. M. Bertka, and Y. Fei. (2018) The solidus of Mars: Melting the insides of our next door neighbor. 49th LPSC, #2774. (23 Mar 2018)

Lindoo, A., M. S. Duncan, and Y. Fei (2018) Percolation behavior in the Fe-Ni-Si-S-C system and influence on meteorite compositions. 49th LPSC, #2320. [Poster presentation]

Duncan, M. S., N. Schmerr, and Y. Fei. (2017) The solidus of Mars. AGU Fall Meeting, MR31B-0445. [Poster Presentation]

Duncan, M. S. and Y. Fei. (2017) Experimental constraints on metal percolation through silicate: How did early cores form? COMPRES Annual Meeting. (10 Jul 2017)

Duncan, M. S. and Y. Fei. (2017) Experimental constraints on metal percolation through silicate: Implications for core formation on asteroids and planetesimals. 48th LPSC, #1405. [Poster presentation]

Duncan, M. S. and Y. Fei. (2016) The effect of carbon on the dihedral angle of metallic melt with implications for the timing and efficiency of core formation. AGU Fall Meeting, MR33B-2687 [Poster presentation]

Billen, M., C. Crépisson, M. S. Duncan, J. M. Garber, A. Ibourichene, P. Madrigal, T. Olugboji, J. Rodriguez­Gonzalez, C. Roy, D. Sandiford, J. Valencia­Cardona, S. Grand. (2016) Metastability of subducted slabs in the mantle transition zone: A combined geodynamic, petrologic, and seismological approach. AGU Fall Meeting, DI31B-2639. [Poster presentation]

Zeng, L., M. S. Duncan, J. M. Garber, J.-A. Hernandez, S. Maurya, H. Zhang, U. Faul, C. A. McCammon, J.-P. Montagner, L. N. Moresi, B. A. Romanowicz, R. L. Rudnick, L. P. Stixrude. (2016) On the origin of high shear wave velocities in the deep roots of cratons. AGU Fall Meeting, DI31B-2639. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2016) Experimental constraints on carbon solubility in terrestrial magma oceans: Implications for the efficiency of early carbon cycling on Earth and Mars. 47th LPSC, #1774. (21 Mar 2016)

Duncan, M. S. and R. Dasgupta. (2015) Experimental constraints on CO₂ solubility in terrestrial magma oceans. AGU Fall Meeting, P11A-2066. [Poster presentation]

Weller, M. B. and M. S. Duncan. (2015) Can mantle potential temperatures be used to infer the tectonic evolution of terrestrial planets? AGU Fall Meeting, P51D-03.

Duncan, M. S. and R. Dasgupta. (2015) Experimental constraints on CO₂ solubility in rhyolitic slab melts – Implications for carbon flux in subduction zones. Deep Carbon Observatory International Science Meeting. [Poster presentation]

Duncan, M. S., M. B. Weller, J. K. Wicks, N. R. Knezek, B. A. Black, S. A. Johnston, S. Hongsresawat, N. J. Towles, C. Thissen, N. C. Schmerr, M. P. Panning, L. Montési, M. Manga and P. Lognonné. (2015) Mars Thermal History: Core, Atmosphere, Mantle, Phobos, and Surface (MaTH CAMPS). 46th LPSC, #2900. [Poster presentation]

Duncan, M. S., M. B. Weller, and J. A. Nittrouer. (2015) Formation timescales of Kasei Valles, Mars: Determination from observations and an erosional model. 46th LPSC, #2854. [Poster presentation]

Weller, M. B. and M. S. Duncan. (2015) Insight into terrestrial planetary dynamics via their mantle potential temperatures. 46th LPSC, #2749. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2014) Experimental constraints on CO₂ solubility in rhyolitic slab melts – Implications for carbon flux in subduction zones. AGU Fall Meeting, V13A-4745. [Poster presentation]

*Muth, M., M. S. Duncan and R. Dasgupta. (2014) Effect of variable Na/K ratio on CO₂ solubility in slab-derived rhyolitic melts – An experimental study. AGU Fall Meeting, DI13A-4266. [Poster presentation]

Dasgupta, R., H. Chi, Y. Li, M. S. Duncan, K. Tsuno. (2014) Carbon dissolution in reduced silicate and alloy melts – A frontier for understanding evolution of terrestrial planets. AGU Fall Meeting, DI13A-4260. [Poster presentation]

Wicks, J. K., M. B. Weller, N. J. Towles, C. Thissen, N. R. Knezek, S. Johnston, S. Hongsresawat, M. S Duncan, B. A. Black, N. C. Schmerr, M. P. Panning, L. Montesi, M. Manga and P. H. Lognonné. (2014) Mars thermal history: Core, atmosphere, mantle, Phobos and surface (MaTH CAMPS). AGU Fall Meeting, DI51A-4351. [Poster presentation]

Duncan, M. S., M. B. Weller, J. A. Nittrouer (2014) Erosional and depositional evolution of Kasei Valles, Mars: Implications for timescales of formation. GSA 2014, #225-3. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2014) Controls on CO₂ solubility in hydrous rhyolitic melt – Implications for carbon transfer to volcanic arcs via partial melt of the subducting slab. Deep Carbon Observatory: Extreme Physics and Chemistry 2014 Workshop. (5 Oct. 2014)

Duncan, M. S. and M. B. Weller. (2014) Venus geochemistry mission: A global perspective. Venus Exploration Targets Workshop, #6034. [Poster presentation]

Weller, M. B. and M. S. Duncan. (2014) Venus: Characterizing thermal tectonic regimes. Venus Exploration Targets Workshop, #6027. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2013) CO₂ solubility in rhyolitic melts as a function of P, T, and fO₂ – Implications for carbon flux in subduction zones. AGU Fall Meeting, V13C-2627. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2013) CO₂ carrying capacity of siliceous slab melts – Implications for carbon flux in subduction zones. Extreme Physics and Chemistry Pre-AGU Workshop. (7 Dec. 2013)

Duncan, M. S. and R. Dasgupta. (2013) Solubility and speciation of CO₂ in sediment partial melts under graphite saturated conditions. Goldschmidt Meeting. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2012) Solubility and speciation of CO₂ in natural rhyolitic melts at 1.5-3.0 GPa – Implications for carbon flux in subduction zones via sediment partial melts. AGU Fall Meeting, V53D-2870. [Poster presentation]

Duncan, M. S. and R. Dasgupta. (2011) CO₂ solubility in natural rhyolitic melts at high pressures – Implications for carbon flux in subduction zones by sediment partial melts. AGU Fall Meeting, V41D-2523. [Poster presentation]

Duncan, M. S. and C. B. Agee. (2010) High pressure experiments on carbonated peridotite with applications to the mantle. 41st LPSC, #1488. [Poster presentation]

Duncan, M. S. and C. B. Agee. (2009) Partial molar volume of CO₂ in peridotitic melt at high pressure and applications to melt mobility in the mantle. AGU 2009 Fall Meeting, MR43A-1861. [Poster presentation]

Duncan, M. S. and C. B. Agee. (2009) Partial molar volume of CO₂ in peridotite partial melt at high pressure. 40th LPSC, #1406. [Poster presentation]

*Student advisee