SS
Member Since 1997
Sergio Speziale
Senior Research Fellow, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences
AGU Research
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Depth Dependent Deformation and Anisotropy of Pyrolite in the Earth's Lower Mantle
GEOPHYSICAL RESEARCH LETTERS
08 june 2024
Jeffrey Gay, Julien Chantel, Matthias Krug, Estell...
Seismic anisotropy is a powerful tool to map deformation processes in the deep Earth. Below 660 km, however, observations are scarce and confl...
In situ femtosecond diffraction in dynamically compressed TiO2: Extreme lowering of synthesis pressure of the Fe2P-type phase
ADVANCED EXPERIMENTAL, COMPUTATIONAL, AND ANALYTICAL APPROACHES IN EXPLORING DEEP PLANETARY INTERIORS IV ORAL
mineral and rock physics | 12 december 2023
Ian K. Ocampo, Donghoon Kim, Francesca Miozzi, Mar...
Rutile, TiO2, is a widely distributed accessory mineral in the Earths crust. As a result of its abundance as well as the presence of three naturally o...
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Olivine’s High Radiative Conductivity Increases Slab Temperature by 100-200 K
THERMODYNAMIC PROPERTIES OF PLANETARY MATERIALS I POSTER
mineral and rock physics | 11 december 2023
Enrico Marzotto, Sergey Lobanov, Alexander Koptev,...
Temperature (T) is a key parameter for subducting slabs because it controls their buoyancy and rheology, the depth of phase transitions, and it causes...
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Deformation Mechanisms, Microstructures, and Seismic Anisotropy of Wadsleyite in the Earth's Transition Zone
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
15 november 2023
Estelle Ledoux, MORVARID SAKI, Jeffrey Gay, Matthi...
Wadsleyite is the dominant mineral of the upper portion of the Earth's mantle transition zone (MTZ). As such, understanding plastic deformation of ...
Novel High‐Pressure Potassium Chloride Monohydrate and Its Implications for Water‐Rich Planetary Bodies
JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS
28 september 2023
Xinmiao Wei, Qiang Zhou, Fangfei Li, Caizi Zhang, ...
Saline water is a common fluid on the Earth‘s surface and in ice planets. Potassium chloride (KCl) is a common salt and is expected to be a u...
Weak Cubic CaSiO3 Perovskite in Earth’s Mantle
TOWARD AN INTERDISCIPLINARY UNDERSTANDING ON THE STRUCTURE, COMPOSITION, AND DYNAMIC EVOLUTION OF THE LOWER MANTLE I ORAL
study of earth's deep interior | 15 december 2022
Hauke Marquardt, Julia Immoor, Hans-Peter Liermann...
Cubic CaSiO3 perovskite is a major phase in subducted oceanic crust, where it forms at a depth of about 550 km from majoritic garnet. We measured the ...
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Multigrain X-ray Diffraction for the Study of Deformation and Phase Transformation Microstructures at Deep Mantle Pressures and Temperatures
ADVANCED EXPERIMENTAL, COMPUTATIONAL AND ANALYTICAL APPROACHES IN EXPLORING DEEP PLANETARY INTERIORS II POSTER
mineral and rock physics | 15 december 2022
Sebastien Merkel, Matthias Krug, Estelle Ledoux, J...
Understanding how microstructures develop in Earths materials is critical to constrain mantle processes from geophysical observations, such as seismic...
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Dislocation Slip In Wadsleyite And Its Implications For The Seismic Anisotropy In The Mantle Transition Zone
SEISMIC ANISOTROPY AND SOLID EARTH DYNAMICS: OBSERVATIONS, MODELS, AND EXPERIMENTS I ORAL
study of earth's deep interior | 16 december 2021
Estelle Ledoux, Jeffrey Gay, Matthias Krug, Olivie...
The mantle transition zone (MTZ), extending from 410 to 660 km depth, is an important region of the terrestrial mantle. Indeed, numerous mineralogical...
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