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Jordan Lubbers

Jordan is a Mendenhall research fellow working on quantifying the frequency of large volume tephra producing eruptions in the Aleutian arc. To do this, he primarily uses micro-analytical techniques (e.g., EPMA, LA-ICP-MS), numerical models, and multivariate statistics.

Previously Jordan has worked on quantifying timescales of generating large volumes of eruptible silicic magma associated with caldera forming eruptions. A large portion of this research dealt with using changes in mineral chemistry (think chemical zoning) to better understand larger magma reservoir scale processes. To investigate these issues, he commonly uses tools that gather in situ geochemical information (i.e. EPMA, laser ablation ICP-MS, Computed Tomography) and methods that utilize their data (i.e. diffusion chronometry, thermodynamic modeling). He also has worked on and is passionate about generating open source software, with a focus on Python, for the petrology community with recent efforts devoted to thermobarometry, laser ablation ICP-MS data reduction, and image processing. 

Education and Certifications

  • PhD Geology - Oregon State University

  • MS Geology - Michigan Technological University

  • BS Geology - University of Wisconsin Oshkosh

Affiliations and Memberships*

  • American Geophysical Union

  • Geochemical Society

  • Mineralogical Society of America

Science and Products

Constraining magma storage conditions of the Toba magmatic system: A plagioclase and amphibole perspective

Silicic magma reservoirs are responsible for producing the largest explosive eruptions in the geologic record. Petrologic and geochronological data provide evidence for these systems spending substantial periods of time (104–105 yrs) within the upper crust prior to eruption; however, the long-term thermochemical evolution of these systems is not fully understood, as existing petrologic data make i
Authors
Jordan Edward Lubbers, Adam J.R. Kent, Shanaka de Silva
By
Volcano Hazards Program, Volcano Science Center

Probabilistic source classification of large tephra producing eruptions using supervised machine learning: An example from the Alaska-Aleutian arc

Alaska contains over 130 volcanoes and volcanic fields that have been active within the last 2 million years. Of these, roughly 90 have erupted during the Holocene, with many characterized by at least one large explosive eruption. These large tephra-producing eruptions (LTPEs) generate orders of magnitude more erupted material than a “typical” arc explosive eruption and distribute ash thousands of
Authors
Jordan Edward Lubbers, Matthew W. Loewen, Kristi L. Wallace, Michelle L. Coombs, Jason A. Addison
By
Volcano Hazards Program, Volcano Science Center

Glass electron microprobe analyses methods, precision and accuracy for tephra studies in Alaska

No abstract available.
Authors
Matthew W. Loewen, Kristi L. Wallace, Jordan Edward Lubbers, Dawn Catherine Sweeney Ruth, Pavel Izbekov, Jessica Larsen, Nathan Graham
By
Volcano Hazards Program, Volcano Science Center

Non-USGS Publications**

Lubbers, J., Kent, A., Meisenheimer, D., Wildenschild, D., 2023. 3D zoning of barium in alkali feldspar. American Mineralogist 108, 297–311. https://doi.org/10.2138/am-2022-8139
Wieser, P., Petrelli, M., Lubbers, J., Wieser, E., Ozaydin, S., Kent, A., Till, C., 2022. Thermobar: An Open-Source Python3 Tool for Thermobarometry and Hygrometry. Volcanica 5. https://doi.org/10.30909/vol.05.02.349384
Lubbers, J., Kent, A.J.R., de Silva, S., 2022. Thermal Budgets of Magma Storage Constrained by Diffusion Chronometry: the Cerro Galán Ignimbrite. Journal of Petrology 63, egac048. https://doi.org/10.1093/petrology/egac048
Lubbers, J., Deering, C., Bachmann, O., 2020. Genesis of rhyolitic melts in the upper crust: Fractionation and remobilization of an intermediate cumulate at Lake City caldera, Colorado, USA. Journal of Volcanology and Geothermal Research 392, 106750. https://doi.org/10.1016/j.jvolgeores.2019.106750

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

Science and Products

Constraining magma storage conditions of the Toba magmatic system: A plagioclase and amphibole perspective

Silicic magma reservoirs are responsible for producing the largest explosive eruptions in the geologic record. Petrologic and geochronological data provide evidence for these systems spending substantial periods of time (104–105 yrs) within the upper crust prior to eruption; however, the long-term thermochemical evolution of these systems is not fully understood, as existing petrologic data make i
Authors
Jordan Edward Lubbers, Adam J.R. Kent, Shanaka de Silva
By
Volcano Hazards Program, Volcano Science Center

Probabilistic source classification of large tephra producing eruptions using supervised machine learning: An example from the Alaska-Aleutian arc

Alaska contains over 130 volcanoes and volcanic fields that have been active within the last 2 million years. Of these, roughly 90 have erupted during the Holocene, with many characterized by at least one large explosive eruption. These large tephra-producing eruptions (LTPEs) generate orders of magnitude more erupted material than a “typical” arc explosive eruption and distribute ash thousands of
Authors
Jordan Edward Lubbers, Matthew W. Loewen, Kristi L. Wallace, Michelle L. Coombs, Jason A. Addison
By
Volcano Hazards Program, Volcano Science Center

Glass electron microprobe analyses methods, precision and accuracy for tephra studies in Alaska

No abstract available.
Authors
Matthew W. Loewen, Kristi L. Wallace, Jordan Edward Lubbers, Dawn Catherine Sweeney Ruth, Pavel Izbekov, Jessica Larsen, Nathan Graham
By
Volcano Hazards Program, Volcano Science Center

Non-USGS Publications**

Lubbers, J., Kent, A., Meisenheimer, D., Wildenschild, D., 2023. 3D zoning of barium in alkali feldspar. American Mineralogist 108, 297–311. https://doi.org/10.2138/am-2022-8139
Wieser, P., Petrelli, M., Lubbers, J., Wieser, E., Ozaydin, S., Kent, A., Till, C., 2022. Thermobar: An Open-Source Python3 Tool for Thermobarometry and Hygrometry. Volcanica 5. https://doi.org/10.30909/vol.05.02.349384
Lubbers, J., Kent, A.J.R., de Silva, S., 2022. Thermal Budgets of Magma Storage Constrained by Diffusion Chronometry: the Cerro Galán Ignimbrite. Journal of Petrology 63, egac048. https://doi.org/10.1093/petrology/egac048
Lubbers, J., Deering, C., Bachmann, O., 2020. Genesis of rhyolitic melts in the upper crust: Fractionation and remobilization of an intermediate cumulate at Lake City caldera, Colorado, USA. Journal of Volcanology and Geothermal Research 392, 106750. https://doi.org/10.1016/j.jvolgeores.2019.106750

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government

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