Auflistung nach Mitwirkenden "John, Timm"
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Crustal‐Scale Sheath Folding at HP Conditions in an Exhumed Alpine Subduction Zone (Tauern Window, Eastern Alps)
We investigate a well‐preserved paleo subduction channel that preserves a coherent part of the European continental margin exposed in the central Tauern Window (Eastern Alps), with the aim of testing models of sheath fold ... -
Evolving temperature field in a fossil subduction channel during the transition from subduction to collision (Tauern Window, Eastern Alps)
Groß, Philip; Pleuger, Jan; Handy, Mark R.; Germer, Marisa; John, Timm (Journal of Metamorphic Geology, 2020-10-12)We investigate the evolution of the three‐dimensional thermal structure of a palaeo‐subduction channel exposed in the Penninic units of the central Tauern Window (Eastern Alps). Structural and petrological observations ... -
Inter‐laboratory Characterisation of Apatite Reference Materials for Chlorine Isotope Analysis
Wudarska, Alicja; Słaby, Ewa; Wiedenbeck, Michael; Barnes, Jaime D.; Bonifacie, Magali; Sturchio, Neil C.; Bardoux, Gérard; Couffignal, Frédéric; Glodny, Johannes; Heraty, Linnea; John, Timm; Kusebauch, Christof; Mayanna, Sathish; Wilke, Franziska D. H.; Deput, Ewa (Geostandards and Geoanalytical Research, 2020-12-25)Here we report on a set of six apatite reference materials (chlorapatites MGMH#133648, TUBAF#38 and fluorapatites MGMH#128441A, TUBAF#37, 40, 50) which we have characterised for their chlorine isotope ratios; these RMs ... -
Measurement of crystallographic orientation of quartz crystal using Raman spectroscopy: application to entrapped inclusions
Zhong, Xin; Loges, Anselm; Roddatis, Vladimir; John, Timm (Contributions to Mineralogy and Petrology, 2021-10-15)Raman spectroscopy has been widely used in mineralogy and petrology for identifying mineral phases. Some recent applications of Raman spectroscopy involve measuring the residual pressure of mineral inclusions, such as ... -
Modification of the Seismic Properties of Subducting Continental Crust by Eclogitization and Deformation Processes
Zertani, Sascha; John, Timm; Tilmann, Frederik; Motra, Hem B.; Keppler, Ruth; Andersen, Torgeir B.; Labrousse, Loic (Journal of Geophysical Research: Solid Earth, 2019-09-11)Subduction zone processes and the resulting geometries at depth are widely studied by large‐scale geophysical imaging techniques. The subsequent interpretations are dependent on information from surface exposures of fossil ... -
Widening of Hydrous Shear Zones During Incipient Eclogitization of Metastable Dry and Rigid Lower Crust—Holsnøy, Western Norway
Kaatz, Lisa; Zertani, Sascha; Moulas, Evangelos; John, Timm; Labrousse, Loïc; Schmalholz, Stefan M.; Andersen, Torgeir B. (Tectonics, 2021-03-15)The partially eclogitized crustal rocks on Holsnøy in the Bergen Arcs, Norway, indicate that eclogitization is caused by the interplay of brittle and ductile deformation promoted by fluid infiltration and fluid‐rock ...