Zobrazeno 1 - 10 of 45 pro vyhledávání: '"Marcel Thielmann"'
1
Akademický článek
Imaging flow focusing and isolation of aqueous fluids in synthetic quartzite: implications for permeability and retained fluid fraction in deep-seated rocks
Autor: Wakana Fujita, Michihiko Nakamura, Kentaro Uesugi, Philipp Eichheimer, Marcel Thielmann, Gregor J. Golabek
Publikováno v: Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-16 (2024)
Abstract The microstructure of realistic fluid–rock systems evolves to minimize the overall interfacial energy, enabling local variations in fluid geometry beyond ideal models. Consequently, the permeability–porosity relationship and fluid distri
Externí odkaz: https://doaj.org/article/def919fa747b4d0a8c37e200462c8515
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2
Akademický článek
The Effect of the Garnet Content on Deformation Mechanisms and Weakening of Eclogite: Insights From Deformation Experiments and Numerical Simulations
Autor: Anna Rogowitz, Marcel Thielmann, Katrin Kraus, Bernhard Grasemann, Jörg Renner
Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 24, Iss 3, Pp n/a-n/a (2023)
Abstract We performed deformation experiments on omphacite‐garnet aggregates at a temperature of 1000°C, a confining pressure of 2.5 GPa, and a strain rate of 3 × 10−6 s−1 and complemented them by numerical simulations to gain insight into th
Externí odkaz: https://doaj.org/article/053d0f9f23054dff9b9d10ecd9090d28
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3
Akademický článek
A transdisciplinary and community-driven database to unravel subduction zone initiation
Autor: Fabio Crameri, Valentina Magni, Mathew Domeier, Grace E. Shephard, Kiran Chotalia, George Cooper, Caroline M. Eakin, Antoniette Greta Grima, Derya Gürer, Ágnes Király, Elvira Mulyukova, Kalijn Peters, Boris Robert, Marcel Thielmann
Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-14 (2020)
Despite numerous advances in our understanding of subduction since the theory of plate tectonics was established, the mechanisms of subduction zone initiation remain highly controversial. Here, the authors present a transdisciplinary and expandable c
Externí odkaz: https://doaj.org/article/75c539ae9c2346e19c0ead5932321f3b
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4
Akademický článek
Contributions of Grain Damage, Thermal Weakening, and Necking to Slab Detachment
Autor: Marcel Thielmann, Stefan M. Schmalholz
Publikováno v: Frontiers in Earth Science, Vol 8 (2020)
We investigate the impact of three coupled weakening mechanisms on the viscous detachment of a stalled lithospheric slab: structural weakening due to necking, material weakening due to grain size reduction, using a two-phase grain damage model, and t
Externí odkaz: https://doaj.org/article/dbc27d2f36be46e4b8c624b776932756
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5
GPU-based numerical models of rapid ductile strain localization due to thermal runaway
Autor: Arne Spang, Marcel Thielmann, Daniel Kiss
Strain localization is a crucial process for lithosphere and mantle deformation as it allows for the formation of faults and shear zones that enable plate tectonics. In the crust, strain localization usually occurs via brittle failure (i.e., breaking
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ae699ceb2141b00fffee07cb2ac8b8c
https://doi.org/10.5194/egusphere-egu23-11594
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6
Insights into slab detachment dynamics from 0D to 3D numerical experiments
Autor: Andrea Piccolo, Marcel Thielmann, Arne Spang
Slab detachment is a process that has been invoked to explain rapid uplift, deep seismicity and magmatic activity in several active orogens (e.g., Alps, Himalaya). The negative buoyancy force associated with a slab at depth and its progressive remova
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2aad1dba7513232e070be153709e6e5b
https://doi.org/10.5194/egusphere-egu23-14144
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7
Phase transition induced stresses and their implications for deep earthquakes
Autor: Marcel Thielmann, Einat Aharonov, Philippe Yamato, Thibault Duretz
Publikováno v: EGU General Assembly 2023
EGU General Assembly 2023, European Geosciences Union, Apr 2023, Vienna, Austria. pp.EGU23-13677, ⟨10.5194/egusphere-egu23-13677⟩
International audience; The nucleation and rupture processes of deep-focus earthquakes have remained enigmatic ever since their discovery. These earthquakes occur mostly within the mantle transition zone where brittle failure is extremely unlikely du
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f471f7ddd545cfe9ca1bcd0378542325
https://insu.hal.science/insu-04087392
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8
Experimental determination of carbon diffusion in liquid iron at high pressure
Autor: David C. Rubie, Marcel Thielmann, Esther S. Posner, Gerd Steinle-Neumann, Anna M. Rebaza
Publikováno v: American Mineralogist. 106:1950-1956
The transport properties of liquid iron alloys at high pressure (P) and temperature (T) are essential for understanding the formation, composition, and evolution of planetary cores. Light alloying elements (e.g., Si, O, S, C, N, H) in liquid iron are
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fbcf1d5eab78bdfc36208eb0955e07c2
https://doi.org/10.2138/am-2021-7644
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10
Crushed and fried: ductile rupture at depth due to grain size reduction and shear heating
Autor: Marcel Thielmann, Thibault Duretz
Since their discovery in 1928, deep earthquakes have been the subject of extensive research to unravel their nucleation and rupture mechanisms. Due to the elevated pressures and temperatures at depths below 50 km, brittle failure becomes less likely
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8fe1ae756e72c49f12317d25660586c9
https://doi.org/10.5194/egusphere-egu22-11762
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