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Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
415 Comer
61 Route 9W - PO Box 1000
(845) 365-8464
(845) 365-8155


Fields of interest: 
Magmatic fluxes in subduction zones

The processing of crustal and mantle materials in subduction zones plays a key role in creating and maintaining the habitable Earth. In order to understand the impact of magmatic subduction zones fluxes on the broader geochemical cycles, I pursue integrative geochemical and geological studies in the intra-oceanic Izu-Bonin-Mariana Arc (NW Pacific), and the continental Trans-Mexican Volcanic Belt.

The lifetime of arcs (~20-100 myr) scales to the evolution of the Earth’s mantle and crustal reservoirs as well as to the plate tectonic cycle, to the opening and closing of ocean gateways, and to the evolution of the global climate. Understanding if and how the arc outflux is linked to these cycles requires a temporally precise and highly resolved record of arc evolution. Such a record is preserved in the minute igneous particles of marine tephra fallout and can be obtained by using state-of-the-art analytical techniques.

My research in Mexico focuses on understanding arc growth rates as key variable of mass balance calculations. We begun a study that shall lead to a closer integration of geochemistry with geology and volumes of extrusive series emplaced through time. This will allow us to relate subduction parameters (e.g. crustal thickness, convergence rate) to the chemical compositions of convergent margin volcanics and to test various hypotheses for the formation of convergent margin magmas. This data base project is complemented by selected field studies that aim to understand differentiation and origin of the alkaline and calc-alkaline magmas of the Mexican Volcanic Belt.

List of degrees from highest to lowest:
Christian-Albrechts-Universität, Kiel, Germany
Christian-Albrechts-Universität, Kiel, Germany
Diplom ( ~M.Sc.)
Technische Universität Clausthal, Clausthal-Zellerfeld, Germany
Honors & Awards: 
Visiting Professor, Kyoto University, Beppu, Japan, 2015-2016
Visiting Research Fellowship, Academia Sinica, Taipei, Taiwan, 2009-2010
Visiting Research Fellowship, Academia Sinica, Taipei, Taiwan, 2007-2008
Research Fellowship, Deutsche Forschungsgemeinschaft, 2003-2005
Habilitation Fellowship, Deutsche Forschungsgemeinschaft, 1997-2000
Postdoctoral Fellowship, Deutsche Forschungsgemeinschaft, 1995-1996

Referenced in the Following News Items:

Selected Publications:

Geochemical and Petrological Insights into the Tectonic Origin of the Transmexican Volcanic Belt Gómez-Tuena, A.; Mori, L.; Straub, S.M. Earth Science Reviews (2017) doi:10.1016/j.earscirev. 2016.12.006
Late Cenozoic Tephrostratigraphy Offshore Southern Central America: 2. Implications for magma subduction rates and subduction erosion Schindlbeck, J.C.; Kutterolf, S.; Freundt, A.; Straub, S.M.; Vannuchi, P.; Alvarado, G.E. Geochem Geophys Geosys Volume: 17 p.: 4585–4604 (2016) doi:10.1002/2016GC006504.
Crustal Recycling by Subduction Erosion in the central Mexican Volcanic Belt Straub, S. M.; Gómez-Tuena,.; Bolge, L. L.; Brandl, A., Espinasa-Perena, R.; Solari, L.; Stuart, F. M.; Vannucchi, P.; Zellmer, G. F. Geochim Cosmochim Acta Volume: 166 p.: 29-52 (2015) doi 10.1016/j.gca.2015.06.001
Temporal Evolution of the Mariana Arc: Mantle Wedge and Subducted Slab Controls Revealed with a Tephra Perspective Straub, S. M.; Woodhead, J. D.; Arculus, R. J. Journal of Petrology Volume: 56 (2) p.: 409-439 (2015) doi 10.1093/petrology/egv005.
Eolian dust input to the Subarctic North Pacific Serno, S.; Winckler, G.; Anderson, R.F.; Hayes, C.T.; McGee, D.; Machalett, B.; Ren, H.; Straub, S.M.; Gersonde, R.; Haug, G.H. Earth and Planetary Science Letters Volume: 387 p.: 252-263 (2014)
A Genetic Link between Silicic Slab Components and Calc-Alkaline Arc Volcanism in central Mexico Straub, S.M.; Zellmer, G.F.; Gómez-Tuena, A.; Espinasa-Perena, R.; Martin-Del Pozzo, A.L.; Stuart, F.M.; Langmuir, C.H. Geol Soc Lon Spec Pub 385 p.: 31-64 (2014) doi 10.1144/SP385.14
The processes of melt differentiation in arc volcanic rocks: Insights from OIB-type arc magmas in the central Mexican Volcanic Belt Straub, S.M.; Gomez-Tuena, A.; Zellmer, G.F.; Espinasa-Perena, R.; Stuart, F.M.; Cai, Y.; Langmuir, C.H.; Martin-Del Pozzo, A.; Mesko, G.T. J Petrol p.: 665-701 (2013) doi:10.1093/petrology/egs081
Formation of Hybrid Arc Andesites beneath Thick Continental Crust Straub, S. M.; Gómez-Tuena, A.; Stuart, F. M.; Zellmer, G. F.; Espinasa-Perena, R.; Cai, Y.; Iizuka, Y. Earth Planet Sci Lett Volume: 303 p.: 337-347 (2011) doi 10.1016/j.epsl.2011.01.013.
Mid-ocean-ridge basalt of Indian type in the northwest Pacific Ocean basin Straub, S. M.; Goldstein, S. L.; Class, C.; Schmidt, A. Nature Geoscience Apr Volume: 2 Issue: 4 p.: 286-289 (2009) Doi 10.1038/Ngeo471
Evidence from high-Ni olivines for a hybridized peridotite/pyroxenite source for orogenic andesites from the central Mexican Volcanic Belt Straub, S. M.; LaGatta, A. B.; Pozzo, A. L. M. D.; Langmuir, C. H. Geochemistry Geophysics Geosystems Mar 7 Volume: 9 p.: - (2008) Doi 10.1029/2007gc001583
The systematics of chlorine, fluorine, and water in Izu arc front volcanic rocks: Implications for volatile recycling in subduction zones Straub, S. M.; Layne, G. D. Geochimica Et Cosmochimica Acta Nov Volume: 67 Issue: 21 p.: 4179-4203 (2003) Doi 10.1016/S0016-7037(00)00307-7