Isotope Geology and Petrology

Alejandro Cisneros

Address:	Institute of Earth Sciences Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 236 D-69120 Heidelberg
Room:	401
Phone: Fax:	+49 6221 54-4825 +49 6221 54-4805 (secretariat)
E-mail:	alejandro.cisneros@geow.uni-heidelberg.de

Research interests and projects

Central America Volcanism
Genesis of anorthosites and related Ti-Fe ore deposits
Evolution of the Maya Block (southeastern Mexico)

Academic career

Since 10/2015	PhD student, Institute of Earth Sciences, Heidelberg University
01/2012 - 01/2014	Master’s student, National Autonomous University of Mexico (UNAM)
08/2005 - 12/2010	Bachelor's student, National Autonomous University of Mexico (UNAM)

Professional employment

03/2015 - 08/2015	Geotechnical Engineer, Vorsevi Mexico
06/2013 - 12/2013	Petrography professor, Faculty of Sciences, National Autonomous University of Mexico (UNAM)
11/2012 - 04/2013	Exploration Geologist, Cambria Geosciences (Canada), Acacoyagua Mexico
01/2011 - 12/2013	Assistant professor, Metamorphic Petrology, National Autonomous University of Mexico (UNAM)
01/2011 - 12/2013	Assistant professor, Mineralogy, National Autonomous University of Mexico (UNAM)

Publications

2021:

Cisneros de León, A., Schmitt, A. K., Kutterolf, S., Schindlbeck-Belo J. C., Hernández, W., Sims K. W. W., Garrison, J., Kant, L. B., Weber, B., Wang, K.-L., Lee, H.-Y., and Trumbull R. B. Zircon and melt extraction from a long-lived and vertically extensive magma system underneath Ilopango Caldera (El Salvador) (2021). Geochemistry, Geophysics and Geosystems. Accepted.

Cisneros de León, A., Schindlbeck‐Belo, J.C., Kutterolf, S., Danišík, M., Schmitt, A.K., Freundt, A., Pérez, W., Harvey, J.C., Wang, K.‐L. and Lee, H.‐Y. (2021). A history of violence: magma incubation, timing and tephra distribution of the Los Chocoyos supereruption (Atitlán Caldera, Guatemala). J. Quaternary Sci. https://doi.org/10.1002/jqs.3265

2020:

Weber, B., Schmitt, A. K., Cisneros de León, A., González-Guzmán, R., and Gerdes, A. (2020). Neoproterozoic extension and the Central Iapetus Magmatic Province in southern Mexico – New U-Pb ages, Hf-O isotopes and trace element data of zircon from the Chiapas Massif Complex. Gondwana Research, v. 88, p. 1-20, https://doi.org/10.1016/j.gr.2020.06.022.

Tazzo-Rangel, M. D., Weber, B., Schmitt, A. K., González-Guzmán, R., Cisneros de León, A. and Hecht, L. (2020). Permo–Triassic metamorphism in the Mérida Andes, Venezuela: new insights from geochronology, O-isotopes, and geothermobarometry. International Journal of Earth Sciences, https://doi.org/10.1007/s00531-020-01926-5.

2019:

Kutterolf, S., Schindlbeck- Belo, J.C., Rohr, I., Rademacher, M., Cisneros de León, A., Eisele, S., Freundt, A., Hernandez, W., and Wang, K.L. (2019). The Arce Tephra: Two subsequent paroxysmal Plinian eruptions from Coatepeque Caldera (El Salvador). Journal of Volcanology and Geothermal Research, v. 390, 106673, https://doi.org/10.1016/j.jvolgeores.2019.106673.

Cisneros de León, A., Schmitt, A. K., Storm, S., Weber, B., Schindlbeck-Belo, J. C., Trumbull, R. B., and Juárez, F. (2019). Millennial to decadal magma evolution in an arc volcano from zircon and tephra of the 2016 Santiaguito eruption (Guatemala): Lithos, v. 340–341,
p 209-222, https://doi.org/10.1016/j.lithos.2019.04.027.

Cisneros de León, A., Schmitt, A. K., Roberge, J., Heiler, L., Ludwig, C., and Schmitt, F. H. (2019). Zircon in sak lu'um: Evidence of multiple Eocene silicic tephra layers as palygorskite precursors in the Yucatán peninsula, Mexico: Journal of South American Earth Sciences, v. 93, p. 394-411.

Cisneros de León, A., and Schmitt, A. K. (2019). Intrusive reawakening of El Chichón volcano prior to its Holocene eruptive hyperactivity: Journal of Volcanology and Geothermal Research, v. 377, p. 53-68.

Cisneros de León, A., and Schmitt, A. K. (2019). Reconciling Li and O diffusion in zircon with protracted magmatic crystal residence: Contributions to Mineralogy and Petrology, v. 174, no. 4, p. 28.

Weber, B., Schmitt, A. K., Cisneros de León, A., and González‐Guzmán, R. (2019). Coeval Early Ediacaran Breakup of Amazonia, Baltica, and Laurentia: Evidence From Micro‐Baddeleyite Dating of Dykes From the Novillo Canyon, Mexico: Geophysical Research Letters, v. 46, no. 4, p. 2003-2011.

2018:

Weber, B., González-Guzmán, R., Manjarrez-Juárez, R., Cisneros de León, A., Martens, U., Solari, L., Hecht, L., and Valencia, V. (2018). Late Mesoproterozoic to Early Paleozoic history of metamorphic basement from the southeastern Chiapas Massif Complex, Mexico, and implications for the evolution of NW Gondwana: Lithos, v. 300-301, p. 177-199.

2017:

Cisneros de León, A., Weber, B., Ortega-Gutiérrez, F., González-Guzmán, R., Maldonado, R., Solari, L., Schaaf, P., and Manjarrez-Juárez, R. (2017). Grenvillian massif-type anorthosite suite in Chiapas, Mexico: Magmatic to polymetamorphic evolution of anorthosites and their Ti-Fe ores: Precambrian Research, v. 295, p. 203-226.

2016:

González-Guzmán, R., Weber, B., Manjarrez-Juárez, R., Cisneros de León, A., Hecht, L., and Herguera-García, J. C. (2016). Provenance, age constraints and metamorphism of Ediacaran metasedimentary rocks from the El Triunfo Complex (SE Chiapas, México): evidence for Rodinia breakup and Iapetus active margin: International Geology Review, v. 58, no. 16, p. 2065-2091.

2014:

Angeles-Garcia, S., Reyes-Salas, A., Alva-Valdivia, L., Cisneros de León, A., and Ortega-Gutierrez, F. (2014). Provenance studies of archaeological materials by scanning electron microscopy: Acta Microscopica, v. 23, no. 3, p. 176-180.

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