Ms Natalia Pardo
Phone:+64 6 3569099 x2892
- Geologist- Universidad Nacional de Colombia (UNAL)-Bogotá
- Master of Science-Universidad Nacional Autónoma de México (UNAM)-México D.F.
Volcanic stratigraphy of Paipa volcano, Paipa and Tuta municipalities, Boyacá, Colombia. 2004-UNAL (Honoured 2004).
Volcanic Stratigraphy and eruptive history of Asososca maar, Managua, Nicaragua. 2008-UNAM. (Honoured 2008; recipient of the GSA Harold T. Stearns Fellowship Award in 2007).
Maximum-Likely explosive Eruptions (MLE) at subduction-related Andesitic volcanoes in New Zealand
Andesitic, subduction-related composite volcanoes have been overlooked in terms of being capable to produce large-scale explosive eruptions, because most of their recent historical activity has been typically effusive or small to medium-scale explosive. However, the geological record at volcanoes such as Ruapehu, Tongariro, and Taranaki evidences that eruptive events 10 to 100 times the size of the historical eruptions have occurred in the past.
With the purpose of contributing to the knowledge on maximum hazard scenarios expected from subduction-related stratovolcanoes, three different active, dominantly andesitic volcanoes have been selected in New Zealand: Mt. Ruapehu, Mt. Tongariro and Mt.Egmont-Taranaki. The main aim of this study is the understanding of the principal controls on magma storage, assembly, ascent, and fragmentation during the largest known explosive eruptions. This includes the quantification of the mass-eruption rate and magma degassing and fragmentation mechanism, the range of volatile and crystal content in the magma, the magma composition and ascent rate, as well as the probable interaction with external water. Moreover we will investigate the physical and chemical processes at the magma chamber, such as magma mixing or mingling. The general methodology considers the problem from the field-scale down to the microscopic scale. Different analytical techniques, such as porosimetry and permeability, Scanning Electron and Fourier-Transformed Infrared microscopy, as well as chemical analyses such as electron microprobe, XRF, and ICP-MS, will be used.
I am interested in all aspects of physical volcanology and eruptive history reconstruction. I am particularly interested in looking into explosive volcanism, eruptive mechanisms, pyroclasts transport and sedimentation, and volatiles in magmas. The final goal is to contribute to the knowledge and education on volcanic hazards.
- Pardo N., Cepeda H., Jaramillo J.M., 2005. The Paipa Volcano, Eastern Cordillera of Colombia, South America: Volcanic Stratigraphy. Earth Sciences Research Journal 9 (1): 3-18.
- Pardo N., Jaramillo J.M., Cepeda H., 2005. The Paipa Volcano, Eastern Cordillera of Colombia, South America (Part II): Petrography and major oxides Petrology. Earth Sciences Research Journal 9 (2): 148-164.
- Pardo, N., Avellán, D.R., Macías, J.L., Scolamacchia, T., Rodriguez, D., 2008. The ~1245 yr BP Asososca maar: new advances on recent volcanic stratigraphy of Managua (Nicaragua) and hazard implications. Journal of Volcanology and Geothermal Research 176 (4): 493-512.
- Pardo, N., Macias, J.L., Giordano, G., Cianfarra, P., Avellán, D.R., Bellatreccia, F. 2009 The ~1245 yr BP Asososca maar eruption: the youngest event along the Nejapa-Miraflores volcanic fault, western Managua, Nicaragua. Journal of Volcanology and Geothermal Research. In Press.
- Cepeda H., and Pardo N., 2004. Vulcanismo Paipa. INGEOMINAS. Informe tCepeda H., and Pardo N., 2004. Vulcanismo Paipa. INGEOMINAS. Informe técnico. 200p. Bogotá, Colombia. (Paipa Volcanism, INGEOMINAS. Technical Report. 200p. Bogotá
- INGEOMINAS, 2008. Geología e Historia Eruptiva del Complejo Volcánico Doña Juana. Informe final, 219p. Diciembre de 2008, INGEOMINAS-Manizales, Colombia. (Doña Juana Volcanic Complex Geology and Eruptive History, final report, 219 p. December 2008, INGEOMINAS-Manizales, Colombia).
My PhD research is funded by a Massey University Doctoral Scholarship.