Publications
- Scholz K*, Townsend M, Huber C, Troch J, Bachmann O, Coonin A* (2023): “Investigating the Impact of an Exsolved H2O-CO2 Phase on Magma Chamber Growth and Longevity: A Thermomechanical Model”. G-cubed (accepted).
- Fonseca Teixeira LM*, Troch J, Bachmann O (2023): “The dynamic nature of aTiO2: Implications for Ti-based thermometers in magmatic systems”. Geology (accepted).
- Rooyakkers S, Chambefort I, Faure K, Wilson CJN, Barker SJ, Mortimer N, Elms HC*, Troch J, Charlier BLA, Leonard GS, Farsky D* (2023): “Widespread cryptic assimilation of hydrothermally altered crust in a high-δ18O setting”. Geochimica et Cosmochimica Acta, 15, 195-209. https://doi.org/10.1016/j.gca.2023.07.004
- Fonseca Teixeira LM*, Troch J, Allaz J, Bachmann O (2022): "Magmatic to hydrothermal conditions in the transition from the A-type Pikes Peak granite (Colorado) to its related pegmatite". Frontiers in Earth Sciences, 10. https://doi.org/10.3389/feart.2022.976588
- Cordell D, Naif D, Troch J, Huber C (2022): "Constraining magma reservoir conditions by integrating thermodynamic petrological models and bulk resistivity from magnetotellurics". Geochemistry, Geophysics, Geosystems, 23, e2022GC010455. https://doi.org/10.1029/2022GC010455
- Troch J, Huber C, Bachmann O (2022): "The physical and chemical evolution of magmatic fluids in near-solidus silicic magma reservoirs: Implications for the formation of pegmatites". American Mineralogist. https://doi.org/10.2138/am-2021-7915
- Troch J, Affolter S, Harris C, Bernasconi SM, Leuenberger M (2021): "Oxygen and hydrogen isotope analysis of experimentally generated magmatic and metamorphic aqueous fluids using laser spectroscopy (WS-CRDS)". Chemical Geology, 584, 120487. https://doi.org/10.1016/j.chemgeo.2021.120487
- Troch J, Ellis BS, Harris C, Bachmann O, Bindeman IN (2020): “Low-δ18O silicic magmas on Earth: A review”. Earth-Science Reviews. 103299. https://doi.org/10.1016/j.earscirev.2020.103299
- Troch J*, Ellis BS, Harris C, Ulmer P, Bouvier AS, Bachmann O (2020): “Experimental melting of hydrothermally altered rocks: Constraints for the generation of low-δ18O rhyolites in the Central Snake River Plain, USA”. Journal of Petrology, 1-22. https://doi.org/10.1093/petrology/egz056
- Tollan P, Ellis BS, Troch J*, Neukampf J* (2019): “Assessing magmatic volatile equilibria through FTIR-spectroscopy of unexposed melt inclusions and their host quartz: a new technique and application to the Mesa Falls Tuff, Yellowstone”. Contributions to Mineralogy and Petrology, 174(3), 24. https://doi.org/10.1007/s00410-019-1561-y
- Troch J*, Ellis BS, Schmitt AK, Bouvier AS, Bachmann O (2018): “The dark side of zircon: Textural, age, oxygen isotopic and trace element evidence of fluid saturation in the subvolcanic reservoir of the Island Park-Mount Jackson Rhyolite, Yellowstone (USA)”. Contributions to Mineralogy and Petrology, 173, 54. https://doi.org/10.1007/s00410-018-1481-2
- Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O (2018): “The effect of prior hydrothermal alteration on the melting behaviour during rhyolite formation in Yellowstone, and its importance in the generation of low-δ18O magmas”. Earth and Planetary Science Letters, 481C, 338-349. https://doi.org/10.1016/j.epsl.2017.10.039
- Ellis BS, Szymanowski D*, Wotzlaw JF, Schmitt A, Bindeman IN, Troch J*, Harris C, Bachmann O, Guillong M (2017): “Post-caldera volcanism at the Heise volcanic field: Implications for petrogenetic models”. Journal of Petrology, 0 (0), 1-22. https://doi.org/10.1093/petrology/egx007
- Ellis BS, Mark DF, Troch J*, Bachmann O, Guillong M, Kent AJ, von Quadt A (2017): “Split-grain 40Ar/39Ar dating: Integrating temporal and geochemical data from crystal cargoes”. Chemical Geology, 457, 15-23. https://doi.org/10.1016/j.chemgeo.2017.03.005
- Troch J*, Ellis BS, Mark DF, Bindeman IN, Kent AJR, Guillong M, Bachmann O (2017): “Rhyolite generation prior to a Yellowstone supereruption: Insight from the Island Park-Mount Jackson rhyolite series”. Journal of Petrology, 0 (0), 1-24. https://doi.org/10.1093/petrology/egw071
- Kueter N*, Soesilo J, Fedortchouk Y, Nestola F, Belluco L, Troch J*, Wälle M, Guillong M, von Quadt A, Driesner T (2016): “Tracing the depositional history of Kalimantan diamonds by zircon provenance and diamond morphology studies”. Lithos, 265, 159-176. https://doi.org/10.1016/j.lithos.2016.05.003
Seminars and invited presentations
Hutton conference, Junior keynote speaker, Baveno/Italy, Sep 2023.
J-P-L symposium Invited talk, Sion/Switzerland, Aug 2023.
RWTH Aachen, RockTalk department seminar, Aachen/Germany, Apr 2023.
Physics of Volcanoes, Bundesanstalt für Geowissenschaften und Rohstoffe, invited keynote speaker, Hannover/Germany, Mar 2023.
Geological Society of Washington, meeting presentation, Washington DC/USA, Feb 2022.
University of Maryland, Department seminar, College Park MD/USA, Dec 2021.
RWTH Aachen, virtual department presentation, Aachen/Germany, July 2021.
International Volcanology Seminar, virtual pan-institutional seminar, Apr 2021.
University of Oregon, virtual department seminar, Eugene OR/USA, Oct 2020.
Smithsonian National Museum of Natural History, virtual department seminar, Washington DS/USA, Oct 2020.
University of Illinois, Department seminar, Urbana-Champaign IL/USA, Feb 2020.
Princeton University, Brown Bag lunch seminar, Princeton/USA, Oct 2019.
American Museum of Natural History, Department seminar, New York City NY/USA, Mar 2019.
Brown University, Geophysics Lunch Bunch, Providence RI/USA, Mar 2019.
University of Cape Town, Department seminar, Cape Town/South Africa, Nov 2017.
J-P-L symposium Invited talk, Sion/Switzerland, Aug 2023.
RWTH Aachen, RockTalk department seminar, Aachen/Germany, Apr 2023.
Physics of Volcanoes, Bundesanstalt für Geowissenschaften und Rohstoffe, invited keynote speaker, Hannover/Germany, Mar 2023.
Geological Society of Washington, meeting presentation, Washington DC/USA, Feb 2022.
University of Maryland, Department seminar, College Park MD/USA, Dec 2021.
RWTH Aachen, virtual department presentation, Aachen/Germany, July 2021.
International Volcanology Seminar, virtual pan-institutional seminar, Apr 2021.
University of Oregon, virtual department seminar, Eugene OR/USA, Oct 2020.
Smithsonian National Museum of Natural History, virtual department seminar, Washington DS/USA, Oct 2020.
University of Illinois, Department seminar, Urbana-Champaign IL/USA, Feb 2020.
Princeton University, Brown Bag lunch seminar, Princeton/USA, Oct 2019.
American Museum of Natural History, Department seminar, New York City NY/USA, Mar 2019.
Brown University, Geophysics Lunch Bunch, Providence RI/USA, Mar 2019.
University of Cape Town, Department seminar, Cape Town/South Africa, Nov 2017.
Conference abstracts and presentations
Keller FU, Popa RG, Allaz J, Bovay T, Bouvier AS, Townsend M, Troch J, Geshi N, Miyakawa A, Bachmann O: “Evolution in water saturation state within the subvolcanic reservoir of the Aso supervolcano (Japan)”. Abstract, Geological Society of America (GSA) meeting, American Geophysical Union, San Francisco/USA 2023.
Keller FU, Popa RG, Allaz J, Townsend M, Troch J, Geshi N, Miyakawa A, Bachmann O: “Unravelling the evolution of water saturation state in the subvolcanic Aso-4 reservoir, and its potential implications on large-scale eruption triggering”. Abstract, Geological Society of America (GSA) meeting, Pittsburgh/USA, 2023.
Troch J, Fonseca Teixeira LM*, Bachmann O, Huber C, Laurent O, Ackerson MR, Allaz J: "Pegmatites as recorders of the magmatic-hydrothermal transition in silicic magma reservoirs". Invited junior keynote lecture, Hutton symposium, Baveno/Italy 2023.
Fonseca Teixeira LM*, Laurent O, Troch J, Siddoway CS, Tavazzani L, Bachmann O: “Investigating the volcanic-plutonic connection: insights from sedimentary layers”. Abstract, Hutton symposium, Baveno/Italy 2023.
Hendrickx T*, Allaz J, Troch J, Bachmann O: “Flavors of liquids precipitating REE-bearing NYF pegmatites and comparisons with their LCT counterparts”. Abstract, Hutton symposium, Baveno/Italy 2023.
Townsend M, Huber C, Scholz K*, Troch J: "Modeling magma chamber growth and eruption; key processes and recent model developments". Abstract, Hutton symposium, Baveno/Italy 2023.
Troch J, Huber C, Kueter N, Guillong M, Ackerson M, Ulmer P, Bachmann O: "The effect of water on trace element diffusivities in silicic melts: A case study on Li, Rb, and Cs". Talk, EMPG conference, Milano/Italy 2023.
Teixeira LMF*, Laurent O, Troch J, Siddoway CS, Bachmann O: “Tracking volcanic, plutonic and pegmatitic sources in sediments: Implications for the Early Earth history”. Abstract, European Geosciences Union, Vienna/Austria 2023.
Aellig P*, Keller T, Bachmann O, Troch J: “Modelling three-phase magma dynamics during assimilation: Insights into the formation of low-δ18O rhyolites at Krafla, Iceland”. Abstract, European Geosciences Union, Vienna/Austria 2023.
Troch J, Cornet J, Huber C, Cordell D: "Application of MatMELTS, a Matlab-based MELTS batch processing tool, to petrological studies, thermomechanical magma chamber models, and magnetotelluric inversions". Talk, IAVCEI meeting, Rotorua/New Zealand 2023.
Scholz K*, Townsend M, Huber C, Troch J, Bachmann O: “A thermomechanical model to study the influence of CO2 on magma chamber growth and longevity”. Abstract, IAVCEI meeting, Rotorua/New Zealand 2023.
Coonin A*, Huber C, Troch J, Townsend M, Scholz K*: “Magma reservoir response to ice unloading: Applications to volcanism in the West Antarctic Rift system”. Abstract, IAVCEI meeting, Rotorua/New Zealand 2023.
Troch J, Huber C, Kueter N, Bachmann O, Fonseca Teixeira LM*, Ackerson MR: "From Niggli’s gas mineralisators to extraction from crystal mushes: Linking pegmatites with their host granites". Invited talk, Swiss Geoscience Meeting, Lausanne/Switzerland 2022.
Troch J, Huber C, Kueter N, Guillong M, Ulmer P, Ackerson M, Bachmann O: "The effect of water on trace element diffusivities in silicic melts: A case study on Li, Rb, and Cs". Talk, GeoMinKöln conference, Cologne/Germany 2022.
Fonseca Teixeira LM*, Laurent O, Troch J, Siddoway CS, Bachmann O: "Linking CL screening and Ti-in-quartz temperatures: A new tool for tracking volcanic, plutonic, and pegmatitic sources in sediments". Abstract, GSA meeting Denver/USA 2022.
Fonseca Teixeira LM*, Troch J, Allaz J, Bachmann O: "Subsolidus crystallisation in the A-type Pikes Peak batholith". Abstract, European Geosciences Union, Vienna/Austria 2022.
Troch J, Löw N*, Harris C, Rooyakkers S, Bachmann O: “Crustal Melting and Assimilation in Compositionally Bimodal Volcanic Settings: Insights from Hydrothermally Altered Rocks Recovered from Drilling in the Krafla Volcanic Field, Iceland”. Invited talk, American Geophysical Union, New Orleans/USA 2021.
Cordell D, Naif S, Troch J, Huber C, Comeau M: “Melt fraction and volatile content estimates using MELTS-constrained Bayesian magnetotelluric inversions: Case study from Uturuncu, Bolivia”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Coonin A**, Huber C, Troch J: “A Physical Model of Ice Unloading: Applications to Volcanism in the West Antarctic Rift System”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Scholz K*, Townsend M, Huber C, Troch J: “The impact of magmatic volatiles on magma extrusive to intrusive ratio from numerical modeling”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Cottrell E, Lascu I, Andrys J*, Ackerson MR, Corrigan CM, Farfan GA, Guice GL, Cole SR, Miller MT, Pobiner B, Rasmussen DJ, Troch J, Tucker J: “Unlearning racism in a federal setting”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Troch J, Huber C, Bachmann O: "The physical and chemical evolution of magmatic fluids in near-solidus silicic magma reservoirs: Implications for the formation of pegmatites". Goldschmidt conference, remotely 2021.
Troch J, Huber C, Rutherford M, Kueter N, Tailby N, Hammond K*, Parman S, Bachmann O: "Alkali trace element (Li, Cs, Rb) diffusion in water-bearing silicic melts". Short talk, Experimental Mineralogy, Petrology and Geochemistry (EMPG) conference, remotely 2021.
Scholz K*, Huber C, Townsend M, Bachmann O, Troch J, Cowit S**: "The effect of CO2 on magma chamber growth, longevity and eruption frequency". Poster presentation, American Geophysical Union, remotely 2020.
Townsend M, Huber C, Scholz K*, O'Hara C**, Bachmann O, Troch J: "Thermomechanical models as a framework to study the evolution of magma chambers using constraints from petrology, geophysics and geodesy". Invited talk, Geological Society of America meeting, remotely 2020.
Troch J, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: "From Australia to Yellowstone: Identifying mechanisms for the generation of low-d18O rhyolites on Earth". Talk, Physics of Volcanoes workshop, Hamburg/Germany 2020.
Troch J, Ellis BS, Harris C, Ulmer P, Bachmann O: "Lessons from low-d18O rhyolites along the Yellowstone hotspot track: Identifying mechanisms for generating low-d18O silicic magmas on Earth". Invited talk, American Geophysical Union, San Francisco/USA 2019.
Troch J, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: “The generation of low-δ18O rhyolites in the Central Snake River Plain: Constraints from partial melting experiments on hydrothermally altered rocks”. Invited talk, International Union of Geodesy and Geophysics (IUGG) General Assembly, Montréal/Canada 2019.
Troch J, Tollan P, Ellis BS, Neukampf J*: “FTIR analysis of unexposed melt inclusions in quartz: A new technique and application to the Mesa Falls Tuff, Yellowstone”. Poster presentation, International Union of Geodesy and Geophysics (IUGG) General Assembly, Montréal/Canada 2019.
Troch J, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Tracing the magmatic-hydrothermal transition in the subvolcanic Yellowstone magma reservoir”. Invited department seminar, American Museum of Natural History, New York/USA 2019.
Troch J, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Tracing the magmatic-hydrothermal transition in the subvolcanic Yellowstone magma reservoir”. Lunch Bunch Brown University, Providence/USA 2019.
Troch J*, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: “Experimental melting of hydrothermally altered rocks: Constraints for the generation of low-δ18O rhyolites in the central Snake River Plain”. Talk, VMSG conference, St. Andrews/Scotland 2019.
Troch J*, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Textural and chemical evidence for volatile saturation in the subvolcanic Yellowstone magma reservoir”. Talk, Goldschmidt conference, Boston/USA 2018.
Troch J*, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Evidence for fluid saturation in the subvolcanic reservoir of the Mount Jackson rhyolite series in Yellowstone?”. SwissSIMS workshop, Lausanne/Switzerland 2018.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O, Bouvier A-S, Baumgartner L: “The origin of low-δ18O rhyolites in the Yellowstone province: Reconciling crustal melting with thermal constraints in magma generation models”. Department seminar, University of Cape Town, Cape Town/South Africa 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O, Bouvier A-S, Baumgartner L: “The role of melting during the generation of low-δ18O rhyolites in the Yellowstone province”. Talk, IAVCEI conference, Portland/USA 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “How to make low-δ18O magmas: The Yellowstone case”. Talk, Ocean Island workshop, Las Palmas de Gran Canaria/Canary Islands 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “Melting processes in the Yellowstone volcanic field: Consequences for the generation of low-δ18O rhyolites”. Talk, Journée Magmatique, Geneva/Switzerland 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “Bulk melting not an option: Assimilation and remelting in the Yellowstone volcanic field”. Talk, Joint Assembly TSG-VMSG-BGA, Liverpool/UK 2017.
Troch J*, Ellis BS, Harris C, Bachmann O: “Tracing hydrothermal alteration through Yellowstone drillcores: Implications for magmatic models”. Poster presentation, Goldschmidt conference, Yokohama/Japan 2016.
Troch J*, Ellis BS, Mark DF, Bachmann O, Guillong M, Kent AJR, von Quadt A: “The split-grain 40Ar/39Ar method as a tool to identify crystal populations: The case of the Mesa Falls Tuff (Yellowstone, USA)”. Talk, Journée Magmatique, Bern/Switzerland 2016.
Troch J*, Ellis BS, Mark DF, Bindeman IN, Kent AJR, Bachmann O: “Mineral-scale magma generation: Insights from rhyolite lavas prior to last Yellowstone supereruption”. Poster presentation, Goldschmidt conference, Prague/Czech Republic 2015.
Ellis BS, Mark DF, Troch J*, Bachmann O: “Split grain Ar/Ar: the cutting edge of geochronology". Poster presentation, VMSG conference, Edinburgh/Scotland 2014.
Troch J*, Ellis BS, Guillong M, Mark DF, Bindeman IN, Bachmann O: “A magma reservoir prior to a Yellowstone super eruption: Constraints from the Mount Jackson Rhyolite and the Island Park dome series (Wyoming, USA)”. PICO presentation, European Geosciences Union (EGU), Vienna/Austria 2014.
Keller FU, Popa RG, Allaz J, Townsend M, Troch J, Geshi N, Miyakawa A, Bachmann O: “Unravelling the evolution of water saturation state in the subvolcanic Aso-4 reservoir, and its potential implications on large-scale eruption triggering”. Abstract, Geological Society of America (GSA) meeting, Pittsburgh/USA, 2023.
Troch J, Fonseca Teixeira LM*, Bachmann O, Huber C, Laurent O, Ackerson MR, Allaz J: "Pegmatites as recorders of the magmatic-hydrothermal transition in silicic magma reservoirs". Invited junior keynote lecture, Hutton symposium, Baveno/Italy 2023.
Fonseca Teixeira LM*, Laurent O, Troch J, Siddoway CS, Tavazzani L, Bachmann O: “Investigating the volcanic-plutonic connection: insights from sedimentary layers”. Abstract, Hutton symposium, Baveno/Italy 2023.
Hendrickx T*, Allaz J, Troch J, Bachmann O: “Flavors of liquids precipitating REE-bearing NYF pegmatites and comparisons with their LCT counterparts”. Abstract, Hutton symposium, Baveno/Italy 2023.
Townsend M, Huber C, Scholz K*, Troch J: "Modeling magma chamber growth and eruption; key processes and recent model developments". Abstract, Hutton symposium, Baveno/Italy 2023.
Troch J, Huber C, Kueter N, Guillong M, Ackerson M, Ulmer P, Bachmann O: "The effect of water on trace element diffusivities in silicic melts: A case study on Li, Rb, and Cs". Talk, EMPG conference, Milano/Italy 2023.
Teixeira LMF*, Laurent O, Troch J, Siddoway CS, Bachmann O: “Tracking volcanic, plutonic and pegmatitic sources in sediments: Implications for the Early Earth history”. Abstract, European Geosciences Union, Vienna/Austria 2023.
Aellig P*, Keller T, Bachmann O, Troch J: “Modelling three-phase magma dynamics during assimilation: Insights into the formation of low-δ18O rhyolites at Krafla, Iceland”. Abstract, European Geosciences Union, Vienna/Austria 2023.
Troch J, Cornet J, Huber C, Cordell D: "Application of MatMELTS, a Matlab-based MELTS batch processing tool, to petrological studies, thermomechanical magma chamber models, and magnetotelluric inversions". Talk, IAVCEI meeting, Rotorua/New Zealand 2023.
Scholz K*, Townsend M, Huber C, Troch J, Bachmann O: “A thermomechanical model to study the influence of CO2 on magma chamber growth and longevity”. Abstract, IAVCEI meeting, Rotorua/New Zealand 2023.
Coonin A*, Huber C, Troch J, Townsend M, Scholz K*: “Magma reservoir response to ice unloading: Applications to volcanism in the West Antarctic Rift system”. Abstract, IAVCEI meeting, Rotorua/New Zealand 2023.
Troch J, Huber C, Kueter N, Bachmann O, Fonseca Teixeira LM*, Ackerson MR: "From Niggli’s gas mineralisators to extraction from crystal mushes: Linking pegmatites with their host granites". Invited talk, Swiss Geoscience Meeting, Lausanne/Switzerland 2022.
Troch J, Huber C, Kueter N, Guillong M, Ulmer P, Ackerson M, Bachmann O: "The effect of water on trace element diffusivities in silicic melts: A case study on Li, Rb, and Cs". Talk, GeoMinKöln conference, Cologne/Germany 2022.
Fonseca Teixeira LM*, Laurent O, Troch J, Siddoway CS, Bachmann O: "Linking CL screening and Ti-in-quartz temperatures: A new tool for tracking volcanic, plutonic, and pegmatitic sources in sediments". Abstract, GSA meeting Denver/USA 2022.
Fonseca Teixeira LM*, Troch J, Allaz J, Bachmann O: "Subsolidus crystallisation in the A-type Pikes Peak batholith". Abstract, European Geosciences Union, Vienna/Austria 2022.
Troch J, Löw N*, Harris C, Rooyakkers S, Bachmann O: “Crustal Melting and Assimilation in Compositionally Bimodal Volcanic Settings: Insights from Hydrothermally Altered Rocks Recovered from Drilling in the Krafla Volcanic Field, Iceland”. Invited talk, American Geophysical Union, New Orleans/USA 2021.
Cordell D, Naif S, Troch J, Huber C, Comeau M: “Melt fraction and volatile content estimates using MELTS-constrained Bayesian magnetotelluric inversions: Case study from Uturuncu, Bolivia”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Coonin A**, Huber C, Troch J: “A Physical Model of Ice Unloading: Applications to Volcanism in the West Antarctic Rift System”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Scholz K*, Townsend M, Huber C, Troch J: “The impact of magmatic volatiles on magma extrusive to intrusive ratio from numerical modeling”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Cottrell E, Lascu I, Andrys J*, Ackerson MR, Corrigan CM, Farfan GA, Guice GL, Cole SR, Miller MT, Pobiner B, Rasmussen DJ, Troch J, Tucker J: “Unlearning racism in a federal setting”. Abstract, American Geophysical Union, New Orleans/USA 2021.
Troch J, Huber C, Bachmann O: "The physical and chemical evolution of magmatic fluids in near-solidus silicic magma reservoirs: Implications for the formation of pegmatites". Goldschmidt conference, remotely 2021.
Troch J, Huber C, Rutherford M, Kueter N, Tailby N, Hammond K*, Parman S, Bachmann O: "Alkali trace element (Li, Cs, Rb) diffusion in water-bearing silicic melts". Short talk, Experimental Mineralogy, Petrology and Geochemistry (EMPG) conference, remotely 2021.
Scholz K*, Huber C, Townsend M, Bachmann O, Troch J, Cowit S**: "The effect of CO2 on magma chamber growth, longevity and eruption frequency". Poster presentation, American Geophysical Union, remotely 2020.
Townsend M, Huber C, Scholz K*, O'Hara C**, Bachmann O, Troch J: "Thermomechanical models as a framework to study the evolution of magma chambers using constraints from petrology, geophysics and geodesy". Invited talk, Geological Society of America meeting, remotely 2020.
Troch J, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: "From Australia to Yellowstone: Identifying mechanisms for the generation of low-d18O rhyolites on Earth". Talk, Physics of Volcanoes workshop, Hamburg/Germany 2020.
Troch J, Ellis BS, Harris C, Ulmer P, Bachmann O: "Lessons from low-d18O rhyolites along the Yellowstone hotspot track: Identifying mechanisms for generating low-d18O silicic magmas on Earth". Invited talk, American Geophysical Union, San Francisco/USA 2019.
Troch J, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: “The generation of low-δ18O rhyolites in the Central Snake River Plain: Constraints from partial melting experiments on hydrothermally altered rocks”. Invited talk, International Union of Geodesy and Geophysics (IUGG) General Assembly, Montréal/Canada 2019.
Troch J, Tollan P, Ellis BS, Neukampf J*: “FTIR analysis of unexposed melt inclusions in quartz: A new technique and application to the Mesa Falls Tuff, Yellowstone”. Poster presentation, International Union of Geodesy and Geophysics (IUGG) General Assembly, Montréal/Canada 2019.
Troch J, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Tracing the magmatic-hydrothermal transition in the subvolcanic Yellowstone magma reservoir”. Invited department seminar, American Museum of Natural History, New York/USA 2019.
Troch J, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Tracing the magmatic-hydrothermal transition in the subvolcanic Yellowstone magma reservoir”. Lunch Bunch Brown University, Providence/USA 2019.
Troch J*, Ellis BS, Harris C, Ulmer P, Bouvier A-S, Bachmann O: “Experimental melting of hydrothermally altered rocks: Constraints for the generation of low-δ18O rhyolites in the central Snake River Plain”. Talk, VMSG conference, St. Andrews/Scotland 2019.
Troch J*, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Textural and chemical evidence for volatile saturation in the subvolcanic Yellowstone magma reservoir”. Talk, Goldschmidt conference, Boston/USA 2018.
Troch J*, Ellis BS, Schmitt AK, Bouvier A-S, Bachmann O: “The dark side of zircon: Evidence for fluid saturation in the subvolcanic reservoir of the Mount Jackson rhyolite series in Yellowstone?”. SwissSIMS workshop, Lausanne/Switzerland 2018.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O, Bouvier A-S, Baumgartner L: “The origin of low-δ18O rhyolites in the Yellowstone province: Reconciling crustal melting with thermal constraints in magma generation models”. Department seminar, University of Cape Town, Cape Town/South Africa 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O, Bouvier A-S, Baumgartner L: “The role of melting during the generation of low-δ18O rhyolites in the Yellowstone province”. Talk, IAVCEI conference, Portland/USA 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “How to make low-δ18O magmas: The Yellowstone case”. Talk, Ocean Island workshop, Las Palmas de Gran Canaria/Canary Islands 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “Melting processes in the Yellowstone volcanic field: Consequences for the generation of low-δ18O rhyolites”. Talk, Journée Magmatique, Geneva/Switzerland 2017.
Troch J*, Ellis BS, Harris C, Ulmer P, Bachmann O: “Bulk melting not an option: Assimilation and remelting in the Yellowstone volcanic field”. Talk, Joint Assembly TSG-VMSG-BGA, Liverpool/UK 2017.
Troch J*, Ellis BS, Harris C, Bachmann O: “Tracing hydrothermal alteration through Yellowstone drillcores: Implications for magmatic models”. Poster presentation, Goldschmidt conference, Yokohama/Japan 2016.
Troch J*, Ellis BS, Mark DF, Bachmann O, Guillong M, Kent AJR, von Quadt A: “The split-grain 40Ar/39Ar method as a tool to identify crystal populations: The case of the Mesa Falls Tuff (Yellowstone, USA)”. Talk, Journée Magmatique, Bern/Switzerland 2016.
Troch J*, Ellis BS, Mark DF, Bindeman IN, Kent AJR, Bachmann O: “Mineral-scale magma generation: Insights from rhyolite lavas prior to last Yellowstone supereruption”. Poster presentation, Goldschmidt conference, Prague/Czech Republic 2015.
Ellis BS, Mark DF, Troch J*, Bachmann O: “Split grain Ar/Ar: the cutting edge of geochronology". Poster presentation, VMSG conference, Edinburgh/Scotland 2014.
Troch J*, Ellis BS, Guillong M, Mark DF, Bindeman IN, Bachmann O: “A magma reservoir prior to a Yellowstone super eruption: Constraints from the Mount Jackson Rhyolite and the Island Park dome series (Wyoming, USA)”. PICO presentation, European Geosciences Union (EGU), Vienna/Austria 2014.
** undergraduate student author, *graduate student author, presenting author
Photos on this page: Sao Miguel, Azores.
Photos on this page: Sao Miguel, Azores.