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GEO3BCN at EGU 2024

The 2024 edition of the European Geosciences Union (EGU) General Assembly is just around the corner, scheduled to take place both on-site in Vienna and virtually from 14 to 21 April. Among presenters at this year's EGU General Assembly are researche... Read more

25-03-2024 News

El CSIC presenta la Conexión Geociencias para un planeta sostenible

El Consejo Superior de Investigaciones Científicas (CSIC) acogió el pasado 14 de marzo el kick off de la nueva conexión Geociencias para un planeta sostenible. Esta nueva propuesta, coordinada por Blas Valero Garcés, del Instituto Pirenaico de Ecolog... Read more

18-03-2024 News

The paleomagnetism laboratory is involved in obtaining the first complete archaeomagnetic data from Central Asia

A study presents the first complete archaeomagnetic data of the magnetic field vector for Central Asia, a vast region that has been largely unexplored from an archaeomagnetic perspective for a long time. Bet Beamud, head of the Paleomagnetism laborat... Read more

11-03-2024 News

Ramon Carbonell, nuevo vicepresidente de la Comisión del CSIC para la Coordinación y Racionalización de las ICTS

El investigador de Geociencias Barcelona (GEO3BCN-CSIC), Ramon Carbonell, ha sido nombrado nuevo vicepresidente de la Comisión para la coordinación y Racionalización de Infraestructuras Científicas y Técnicas Singulares (ICTS) y participación en Infr... Read more

06-03-2024 News

A news study reveals that the ice flow in Greenland is younger than thought

A new international study indicates that the Northwest Greenland Ice Stream may be much younger than previously believed. The article, published in the journal Nature Communications and led by the Alfred Wegener Institute (AWI), helps to better under... Read more

22-02-2024 News

Drone view of the Amônia River and the Amazon forest. (Yurua, Ucayali, Peru). Autor: Andre Dib

Fins al 47% dels boscos amazònics podrien patir alteracions irreversibles i desaparèixer el 2050

Una nova publicació de Nature analitza els llindars potencials que podrien empènyer la selva amazònica a un punt de no retorn. L’estudi, amb participació del Consell Superior d’Investigacions Científiques (CSIC), estima que per al 2050 entre el 10% i... Read more

14-02-2024 News

Geociències Barcelona debuta a Ciència al Barri

L'alumnat del centre educatiu Front Marítim va visitar al gener els laboratoris de microscòpia i de paleomagnetisme de Geociències Barcelona (GEO3BCN-CSIC). L'activitat, realitzada en el marc de la iniciativa Ciència al Barri, va ser dirigida pels re... Read more

30-01-2024 News

El programa CSIC Cocrea impulsa proyectos de colaboración público-privada frente a los grandes retos actuales

El programa CSIC COCREA cofinancia cinco proyectos para acelerar la transición energética a partir de la producción, conversión, almacenamiento y gestión de energías limpias y sostenible. Para promover esta transición energética, los proyectos selecc... Read more

18-01-2024 News

Stephanie Barde-Cabusson gana el Concurso de Fotografía 2023

Dos imágenes de Stephanie Barde-Cabusson obtienen el primer y tercer puesto del Concurso de Fotografía 2023 organizado por Geociencias Barcelona (GEO3BCN-CSIC). Los resultados fueron presentados en la tradicional jornada de invierno del instituto, ce... Read more

21-12-2023 News

Dario Pedrazzi, guanyador de la Beca Oriol de Bolòs de Ciències Naturals 2023

L’investigador de Geociències Barcelona (GEO3BCN-CSIC), Dario Pedrazzi, és el guanyador de la Beca Oriol de Bolòs de Ciències Naturals 2023 per un estudi que porta per títol ‘Edat absoluta i caracterització vulcanològica de dos dels possibles volcans... Read more

14-12-2023 News

Mechanical properties of minerals in lunar and HED meteorites from nanoindentation testing: Implications for space mining

Peña-Asensio, E., Trigo-Rodríguez, J.M., Sort, J., Ibáñez-Insa, J. and Rimola, A. (2024), Mechanical properties of minerals in lunar and HED meteorites from nanoindentation testing: Implications for space mining. Meteorit Planet Sci. https://doi.org/10.1111/maps.14148

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First Full-Vector Archeomagnetic Data From Central Asia (3 BCE to 15 CE Centuries): Evidence for a Large Non-Dipole Field Contribution Around the First Century BCE

Bonilla-Alba, R., Gómez-Paccard, M., Pavón-Carrasco, F. J., Campuzano, S. A., Beamud, E., Martínez-Ferreras, V., Gurt-Esparraguera, J. M., Ariño-Gil, E., Martín-Hernández, F., & Osete, M. L. (2024). First Full-Vector Archeomagnetic Data From Central Asia (3 BCE to 15 CE Centuries): Evidence for a Large Non-Dipole Field Contribution Around the First Century BCE. Journal of Geophysical Research: Solid Earth, 129(2), e2023JB027910. https://doi.org/https://doi.org/10.1029/2023JB027910

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Thermal structure of the southern Caribbean and northwestern South America: implications for seismogenesis

Gómez-García, Á. M., González, Á., Cacace, M., Scheck-Wenderoth, M., & Monsalve, G. (2024). Thermal structure of the southern Caribbean and northwestern South America: implications for seismogenesis. Solid Earth, 15(2), 281–303. https://doi.org/10.5194/se-15-281-2024

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Critical transitions in the Amazon forest system

Flores, B. M., Montoya, E., Sakschewski, B., Nascimento, N., Staal, A., Betts, R. A., Levis, C., Lapola, D. M., Esquível-Muelbert, A., Jakovac, C., Nobre, C. A., Oliveira, R. S., Borma, L. S., Nian, D., Boers, N., Hecht, S. B., ter Steege, H., Arieira, J., Lucas, I. L., … Hirota, M. (2024). Critical transitions in the Amazon forest system. Nature, 626(7999), 555–564. https://doi.org/10.1038/s41586-023-06970-0

Latest GEO3BCN Publications

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Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago

Jansen, D., Franke, S., Bauer, C. C., Binder, T., Dahl-Jensen, D., Eichler, J., Eisen, O., Hu, Y., Kerch, J., Llorens, M.-G., Miller, H., Neckel, N., Paden, J., de Riese, T., Sachau, T., Stoll, N., Weikusat, I., Wilhelms, F., Zhang, Y., & Bons, P. D. (2024). Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago. Nature Communications, 15(1), 1193. https://doi.org/10.1038/s41467-024-45021-8

Latest GEO3BCN Publications

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Assessing changes in global fire regimes

Sayedi, S. S., Abbott, B. W., Vannière, B., Leys, B., Colombaroli, D., Romera, G. G., Słowiński, M., Aleman, J. C., Blarquez, O., Feurdean, A., Brown, K., Aakala, T., Alenius, T., Allen, K., Andric, M., Bergeron, Y., Biagioni, S., Bradshaw, R., Bremond, L., …, Montoya, E., Daniau, A.-L. (2024). Assessing changes in global fire regimes. Fire Ecology, 20(1), 18. https://doi.org/10.1186/s42408-023-00237-9

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Why does western Makran have a low seismicity rate?

Abbasi, M., Ghods, A., Najafi, M., Abbasy, S., Amiri, M., Shabanian, E., Kheradmandi, M., & Asgari, J. (2023). Why does western Makran have a low seismicity rate? Tectonophysics, 869, 230134. https://doi.org/10.1016/J.TECTO.2023.230134

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Polymorphism and Phase Stability of Hydrated Magnesium Carbonate Nesquehonite MgCO3·3H2O: Negative Axial Compressibility and Thermal Expansion in a Cementitious Material

Santamaría-Pérez, D., Chuliá-Jordán, R., Gonzalez-Platas, J., Otero-de-la-Roza, A., Ruiz-Fuertes, J., Pellicer-Porres, J., Oliva, R., & Popescu, C. (2024). Polymorphism and Phase Stability of Hydrated Magnesium Carbonate Nesquehonite MgCO3·3H2O: Negative Axial Compressibility and Thermal Expansion in a Cementitious Material. Crystal Growth & Design. https://doi.org/10.1021/acs.cgd.3c01171

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Impact of glacier changes and permafrost distribution on debris flows in Badswat and Shishkat catchments, Northern Pakistan

Hassan, W., Su, F., Liu, W., Hassan, J., Hassan, M., Bazai, N. A., Wang, H., Yang, Z., Ali, M., & Castellanos, D. G. (2023). Impact of glacier changes and permafrost distribution on debris flows in Badswat and Shishkat catchments, Northern Pakistan. Journal of Mountain Science, 20(12), 3687–3702. https://doi.org/10.1007/s11629-023-7894-5

Latest GEO3BCN Publications

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Structural style and timing of nw-se trending zagros folds in sw iran: interaction with north-south trending arabian folds and implications for petroleum geology

Vergés, J., Casini, G., Ruh, J., Cosgrove, J., Sherkati, S., Najafi, M., Casciello, E., Saura, E., Fard, I. A., Piryaei, A., de Lamotte, D. F., Letouzey, J., Goodarzi, H., Soleimany, B., & Jahani, S. (2024). STRUCTURAL STYLE AND TIMING OF NW-SE TRENDING ZAGROS FOLDS IN SW IRAN: INTERACTION WITH NORTH-SOUTH TRENDING ARABIAN FOLDS AND IMPLICATIONS FOR PETROLEUM GEOLOGY. Journal of Petroleum Geology, 47(1), 3–74. https://doi.org/https://doi.org/10.1111/jpg.12850

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Llorens, Maria Gema

Contact Information

Maria Gema Llorens

Scientific Staff


Phone

+34 93 634 4660 Ext. 440669

Email

Publications

Publications

 

Educational Background

  • 2015 PhD in Earth Sciences, University of Tübingen (Tübingen, Germany). Title: Numerical simulation of deformation microstructures and folds in polar ice and ductile rocks. Summa Cum Laude. Prize for the best PhD thesis in Geosciences 2015 at the University of Tübingen
  • 2006 MSc in Geology, Autonomous University of Barcelona (Barcelona, Spain)

Research experience and employment history

  • 2021-present. member of the Cryospheric Sciences section of the Spanish Comission of Geodesy and Geophysics (CEGG)
  • 2020-present. Juan de la Cierva-Incorporación research fellow, ICTJA-CSIC
  • 2018-2019. Juan de la Cierva-Formación, Autonomous University of Barcelona
  • 2016-2018. Postdoctoral research fellow. Excellence Initiative (DFG), University of Tübingen.
  • 2013-2016. PhD student (2013-2015) and Postdoctoral research fellow (2015-2016). University of Tübingen and Alfred Wegener Institute for Polar and Marine Research.
  • 2013-2015. Coordinator of the Micro-DICE (Mycrodinamics of Ice) Research Network. Funded by the European Science Foundation (ESF).
  • 2010-2012. Research assistant and PhD student. University of Tübingen.
  • 2006-2010. Structure and construction material quality control manager. Edificio Terminal UTE and FCC construcción.

 

Research Interests

  • Rock and ice microstructure and mechanics
  • Mineral physics
  • Recrystallisation
  • Deformation mechanisms
  • Ductile deformation
  • Mechanical and seismic anisotropy
  • Numerical modelling
  • Structural geology

 

Active Projects

  • 2019-2021. Unravelling the evolution of inverted basins and orogenic belts by structural geology, geophysics and sediment provenance analysis. Funded by the Spanish Ministry of Science, Innovation and Universities. Autonomous University of Barcelona, Spain

Past Projects

  • 2019-2019. GeoERA within the project: HotLime: Mapping and Assesment of Geothermal Plays in Deep Carbonate Rocks, funded by European Union's Horizon 2020 research and innovation programme. Contract between the Catalan Geological Survey and the University of Barcelona, Spain
  • 2018-2020. Ice sheets as a deck of cards: understanding mechanical anisotropy, University of Otago, New Zealand.
  • 2018-2019. Stretching ice to the limit: New flow laws for ice sheets, funded by the Marsden Fund Royal Society, University of Otago, New Zealand.
  • 2013-2016. The effect of deformation mechanisms for ice sheet dynamics, funded by the Helmholtz Association of German Research Centres. University of Tübingen and Alfred Wegener Institute for Polar and Marine Research.

 

Outreach and awards

Awards & mentions

  • Vice-President of the European Society for Deformation Mechanisms, Rheology and Tectonics (DRT)
  • PhD Summa Cum Laude.
  • Prize for the best PhD thesis in Geosciences 2015 at the University of Tübingen, Germany.
  • Prize for the best student poster presentation at the 18th International Conference on Deformation Mechanisms, Rheology and Tectonics (DRT 2011)

 


PUBLICATIONS

2023

2022

2021

2020

 

PREVIOUS SELECTED PUBLICATIONS

2020:

Griera, A., Gomez-Rivas, E. and Llorens, M.-G. 2020. Influence of layer interface geometry on folding of single layers. Geological Society of London Special Publications, 487.

2019:

Llorens M-G. Stress and strain evolution during single-layer folding. 2019. Journal of Structural Geology, 126, 245-257

Llorens M-G, Gomez-Rivas E, Griera A, Roessiger J, Walte NP, Bons PD. 2019. The effect of dynamic recrystallisation on the rheology and microstructures of partially molten rocks. Journal of Structural Geology, 118, 224-235

Qi C, Prior DJ, Craw L, Fan S, Llorens M-G, Griera A, Negrini M, Bons PD and Goldsby DL. 2019. Crystallographic preferred orientations of ice deformed in direct-shear experiments at low temperatures. The Cryosphere, 13, 351-371

. de Riese T, Evans L, Gomez-Rivas E, Griera A, Lebensohn RA, Llorens M-G, Ran H, Sachau T, Weikusat I and Bons PD. 2019. Shear localisation in anisotropic materials: a numerical study. Journal of Structural Geology, 124, 81-90.

Piazolo S, Bons PD, Griera A, Llorens M-G, Gomez-Rivas E, Kowhn D, Wheeler J, Gardner R, Godinho JRA, Evans L, Lebensohn RA, Jessell MW. 2019. A review of numerical modelling of the dynamics of microstructural development in rocks and ice: Past, present and future. Journal of Structural Geology, 125, 111-123.

Ran H, de Riese T, Llorens M-G, Finch M, Evans L, Gomez-Rivas E , Griera A, Jessell MW, Lebensohn RA, Piazolo S, Bons PD. 2019. Time for anisotropy: The significance of mechanical anisotropy for the development of deformation structures. Journal of Structural Geology, 125, 41-47.

2018:

Gomez-Rivas E, Martín-Martín JD, Bons PD, Griera A, Yao S, Llorens M-G, and Travé A. 2018. Controls on convective fluid flow systems that result in the formation of massive diagenetic alterations. Advances in Science, Technology and Innovation. Springer, in press.

Bons PD, Kleiner T, Llorens M-G, Prior DJ, Sachau T, Weikusat I, Jansen D. 2018. Greenland Ice Sheet – Higher non-linearity of ice flow significantly reduces estimated basal motion.

Geophysical Research Letters, 45(13), 6542-6548.

Ran H, Bons PD, Wang G, Steinbach F, Finch M, Griera A, Gomez-Rivas E, Llorens M-G, Ran S, Liang X, and Zhou J. 2018. High-strain deformation of conglomerates: numerical modelling, strain analysis, and an example from the Wutai Mountains, North China Craton. Journal of Structural Geology, 114, 222-234.

Gomez-Rivas E, Griera A, Llorens M-G, Bons PD and Lebensohn RA. 2017. Subgrain rotation recrystallization during shearing: insights from full-field numerical simulations of halite polycrystals. Journal of Geophysical Research: Solid Earth, 122.11:8810-8827.

2017:

Llorens M-G, Griera A, Steinbach F, Jansen D, Bons PD, Roessiger J, Lebensohn RA and Weikusat I. 2017. Dynamic recrystallisation during polar ice sheet flow: insights from numerical simulations. Philosophical Transactions of the Royal Society A (invited contribution), 375: 20150346.

2016:

Steinbach F, Bons PD, Griera A, Jansen D, Llorens M-G, Roessiger J and Weikusat I. 2016. Strain localization and dynamic recrystallization in the ice-air aggregate: a numerical approach. The Cryosphere, 10, 3071-3089.

Llorens M-G, Griera A, Bons PD, Lebensohn R, Evans L, Jansen, D and Weikusat I. 2016. Full-field predictions of ice dynamic recrystallisation under simple shear conditions. Earth and Planetary Science Letters, 450, 233–242.

Bons PD, Jansen D, Mündel F, Bauer CC, Binder T, Eisen O, Jessell MW, Llorens M-G, Steinbach F, Steinhage D and Weikusat I. 2016. Converging flow and anisotropy cause large-scale folding in Greenland's ice sheet. Nature Communications, 7, 11427.

Jansen D, Llorens M-G, Westhoff J, Steinbach F, Kipfstuhl S, Bons PD, Griera A, and Weikusat I. Small-scale disturbances in the stratigraphy of the NEEM ice core. 2016. The Cryosphere, 10.1, 359-370.

Llorens M-G, Griera A, Bons PD, Roessiger J, Lebensohn R, Evans L, and Weikusat I. Dynamic recrystallization of ice aggregates during viscoplastic deformation: a numerical approach. 2016. Journal of Glaciology, 62(232), 359-377.

2015:

Gomez-Rivas E, Griera A and Llorens M-G. 2015. Fracturing of ductile anisotropic multilayers: influence of material strength. Solid Earth, 6, 497-514.

Griera A, Gomez-Rivas E, Llorens M-G, Bons PD and Lebensohn R. 2015. Microstructural evolution of polycrystalline materials in simple shear: insights from full-field numerical simulations. Geotectonic Research, 97, 37-39.

2014:

Llorens M-G, Bons PD, Griera A and Gomez-Rivas E. 2014. Mechanics of fold development in pure and simple shear. Mathematics of Planet Earth. Lecture Notes in Earth System Science 36, pp. 763-766. Springer.

2013:

Llorens M-G, Bons PD, Griera A and Gomez-Rivas E. 2013. When do folds unfold during progressive shear? Geology, 41, 563-566.

Griera A, Llorens M-G, Gomez-Rivas E, Bons PD, Jessell MW, Evans LA and Lebensohn R. 2013. Numerical modelling of porphyroclast and porphyroblast rotation in anisotropic rocks. Tectonophysics, 587, 4-29.

Llorens M-G, Bons, PD, Griera A, Gomez-Rivas E and Evans LA. 2013. Single layer folding in simple shear. Journal of Structural Geology, 50, 209-220.

 

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