Benjamin Andrews

• B.A., University of Oregon
• M.S., University of Alaska
• Ph.D., University of Texas Austin

Volcanic processes and hazards ranging from magmatic storage and recharge conditions, through eruption, to deposition; rates of mass, momentum, and energy transfer in different volcanic and geologic processes; analog modeling, optical flow velocimetry, turbulence analysis, sample grain size and component analysis, experimental petrology, electron microscopy, and crystal isotope stratigraphy.

Journal Article

• Andrews, Benjamin J., Venzke, Edward, Cottrell, Elizabeth, Sennert, Sally S. K., Bennis, Kadie L., and Crafford, A. E. J. 2025. "The Volcanoes of the World database." Bulletin of Volcanology, 87, (5). https://doi.org/10.1007/s00445-025-01819-y.
• Mijjum, M., Andrews, Benjamin J., McCoy, Timothy J., Corrigan, Catherine M., Caffee, M. W., and Tremblay, M. M. 2025. "Using X‐ray computed microtomography (μCT) to determine subsample‐specific cosmogenic noble gas production rates of E (enstatite) chondrites." Meteoritics & Planetary Science, https://doi.org/10.1111/maps.14309.
• Andrews, Benjamin J. and Coonin, Allie N. 2024. "Three-dimensional turbulent velocity field and air entrainment of the 22 March 1944 Vesuvius eruption plume." Bulletin of Volcanology, 86, (2). https://doi.org/10.1007/s00445-024-01703-1.
• Andrews, Benjamin J. and Quane, Steve L. 2023. "Shallow storage, fragmentation depth, and eruption velocity of the 7.05 Ma Rattlesnake Tuff as indicated by breadcrust bubble ash morphology." Bulletin of Volcanology, 85, (11). https://doi.org/10.1007/s00445-023-01677-6.
• Boijseauneau-López, Mario E., Sosa-Ceballos, Giovanni, Farfán, Gabriela A., Macías, Jose José, and Andrews, Benjamin J. 2023. "Ultra-crystalline pyroclastic deposits and rhyolitic lavas controlled by crystal mushes: insights from the Acoculco Caldera Complex, Mexico." Contributions to Mineralogy and Petrology, 178, (9) 63. https://doi.org/10.1007/s00410-023-02043-7.
• Marshall, Aaron A. and Andrews, Benjamin J. 2023. "Modeling decompression paths in a basaltic andesite magma using the nucleation and growth of plagioclase microlites." Contributions to Mineralogy and Petrology, 178, (9). https://doi.org/10.1007/s00410-023-02030-y.
• Marshall, Aaron A., Manga, Michael, Brand, Brittany D., and Andrews, Benjamin J. 2022. "Autobrecciation and fusing of mafic magma preceding explosive eruptions." Geology, 50, (10) 1177–1181. https://doi.org/10.1130/G50180.1.
• Andrews, Benjamin J., Costa, F., Venzke, Edward A., and Widiwijayanti, C. 2022. "Databases in Volcanology." Bulletin of Volcanology, 84, (10) 92–92. https://doi.org/10.1007/s00445-022-01597-x.
• Lynton, Stephen J., Andrews, Benjamin J., Rose, Timothy R., Andrys, Janine L., and Kelley, Katherine A. 2022. "Evidence for transitional and mildly alkalic eruptions during Hawai'i's dominantly tholeiitic shield-building stage: Insights from the Kulanaokuaiki Tephra (≥1.0 ka) at Kīlauea Volcano, HI." Journal of Volcanology and Geothermal Research, 429. https://doi.org/10.1016/j.jvolgeores.2022.107612.
• Andrews, Benjamin J. 2021. "Plagioclase population dynamics and zoning in response to changes in temperature and pressure." American Mineralogist, 106, (9) 1438–1452. https://doi.org/10.2138/am-2021-7491.
• Ruefer, Anna C., Befus, Kenneth S., Thompson, James O., and Andrews, Benjamin J. 2021. "Implications of Multiple Disequilibrium Textures in Quartz-Hosted Embayments." Frontiers in Earth Science, 9. https://doi.org/10.3389/feart.2021.742895.
• Jackson, Colin R. M., Cottrell, Elizabeth, and Andrews, Ben. 2021. "Warm and oxidizing slabs limit ingassing efficiency of nitrogen to the mantle." Earth and Planetary Science Letters, 553 116615–116615. https://doi.org/10.1016/j.epsl.2020.116615.
• Farfan, Gabriela A., Rakovan, John, Ackerson, Michael R., Andrews, Benjamin J., and Post, Jeffrey E. 2021. "The origin of trapiche-like inclusion patterns in quartz from Inner Mongolia, China." American Mineralogist, 106, (11) 1797–1808. https://doi.org/10.2138/am-2021-7454.
• Waters, L. E., Andrews, B. J., and Frey, H. M. 2021. "Daly Gaps at South Sister, Oregon, USA, generated via partial melting." Contributions to Mineralogy and Petrology, 176, (7). https://doi.org/10.1007/s00410-021-01805-5.
• Andrews, Benjamin J. and Befus, Kenneth S. 2020. "Supersaturation Nucleation and Growth of Plagioclase: a numerical model of decompression-induced crystallization." Contributions to Mineralogy and Petrology, 175, (3) Article 23. https://doi.org/10.1007/s00410-020-1660-9.
• Black, Benjamin A. and Andrews, Benjamin J. 2020. "Petrologic imaging of the architecture of magma reservoirs feeding caldera-forming eruptions." Earth and Planetary Science Letters, 552 116572–116572. https://doi.org/10.1016/j.epsl.2020.116572.
• Quane, Steven L. and Andrews, Benjamin J. 2020. "Breadcrust bubbles: Ash particles recording post-fragmentation brittle-ductile deformation." Geology, 48, (12) 1205–1209. https://doi.org/10.1130/G47811.1.
• Reath, K., Pritchard, M., Biggs, J., Andrews, Benjamin J., Ebmeier, S. K., Bagnardi, M., Girona, T., Lundgren, P., Lopez, T., and Poland, M. 2020. "Using Conceptual Models to Relate Multi-Parameter Satellite Data to Sub-Surface Volcanic Processes in Latin America." Geochemistry, Geophysics, Geosystems, 21, (1). https://doi.org/10.1029/2019GC008494.
• Andrews, Benjamin J. 2019. "Recognizing unsteadiness in the transport systems of dilute pyroclastic density currents." Bulletin of Volcanology, 81, (5). https://doi.org/10.1007/s00445-018-1266-5.
• Fiske, Richard S., Rose, Timothy R., Swanson, Donald A., Andrews, Benjamin J., and Nichols, Alexander R. L. 2019. "The Kulanaokuaiki-3 tephra, 900 CE: Products of a remarkably energetic pyroclastic eruption at Kīlauea Volcano, Hawaiʻi, USA." GSA Bulletin, 131, (9-10) 1537–1554. https://doi.org/10.1130/B35063.1.
• Reath, K., Pritchard, M., Poland, M., Delgado, F., Carn, S., Coppola, D., Andrews, B., Ebmeier, S. K., Rumpf, E., Henderson, S., Baker, S., Lundgren, P., Wright, R., Biggs, J., Lopez, T., Wauthier, C., Moruzzi, S., Alcott, A., Wessels, R., Griswold, J., Ogburn, S., Loughlin, S., Meyer, F., Vaughan, G., and Bagnardi, M. 2019. "Thermal, Deformation, and Degassing Remote Sensing Time Series (CE 2000-2017) at the 47 most Active Volcanoes in Latin America: Implications for Volcanic Systems." Journal of Geophysical Research: Solid Earth, 124, (1) 195–218. https://doi.org/10.1029/2018JB016199.
• Andrews, Benjamin J., Dufek, Josef, and Ponomareva, Vera. 2018. "Eruption dynamics and explosive-effusive transitions during the 1400 cal BP eruption of Opala volcano, Kamchatka, Russia." Journal of Volcanology and Geothermal Research, 356 316–330. https://doi.org/10.1016/j.jvolgeores.2018.02.019.
• Befus, Kenneth S. and Andrews, Benjamin J. 2018. "Crystal nucleation and growth produced by continuous decompression of Pinatubo magma." Contributions to Mineralogy and Petrology, 173, (11). https://doi.org/10.1007/s00410-018-1519-5.
• Gardner, James E., Nazworth, Caroline, Helper, Mark A., and Andrews, Benjamin J. 2018. "Inferring the nature of pyroclastic density currents from tree damage: The 18 May 1980 blast surge of Mount St. Helens, USA." Geology, 46, (9) 795–798. https://doi.org/10.1130/G45353.1.
• Gardner, James E., Andrews, Benjamin J., and Dennen, Robert. 2017. "Liftoff of the 18 May 1980 surge of Mount St. Helens (USA) and the deposits left behind." Bulletin of Volcanology, 79, (1) 8–8. https://doi.org/10.1007/s00445-016-1095-3.
• Pistone, Mattia, Whittington, Alan G., Andrews, Benjamin, and Cottrell, Elizabeth. 2017. "Crystal-rich lava dome extrusion during vesiculation: An experimental study." Journal of Volcanology and Geothermal Research, 347 1–14. https://doi.org/10.1016/j.jvolgeores.2017.06.018.
• Black, Benjamin A., Manga, Michael, and Andrews, Benjamin J. 2016. "Ash production and dispersal from sustained low-intensity Mono-Inyo eruptions." Bulletin of Volcanology, 78, (8) 57–57. https://doi.org/10.1007/s00445-016-1053-0.
• Waters, Laura E. and Andrews, Benjamin J. 2016. "The role of superheating in the formation of Glass Mountain obsidians (Long Valley, CA) inferred through crystallization of sanidine." Contributions to Mineralogy and Petrology, 171, (10) 79. https://doi.org/10.1007/s00410-016-1291-3.
• Zellmer, Georg F., Pistone, Mattia, Iizuka, Yoshiyuki, Andrews, Benjamin J., Gomez-Tuena, Arturo, Straub, Susanne M., and Cottrell, Elizabeth. 2016. "Petrogenesis of antecryst-bearing arc basalts from the Trans-Mexican Volcanic Belt: Insights into along-arc variations in magma-mush ponding depths, H2O contents, and surface heat flux." American Mineralogist, 101, (11) 2405–2422. https://doi.org/10.2138/am-2016-5701.
• Lavallée, Yan, Dingwell, Donald B., Johnson, Jeffrey B., Cimarelli, Corrado, Hornby, Adrian J., Kendrick, Jackie E., von Aulock, Felix W., Kennedy, Ben M., Andrews, Benjamin J., Wadsworth, Fabian B., Rhodes, Emma, and Chigna, Gustavo. 2015. "Thermal vesiculation during volcanic eruptions." Nature, 528, (7583) 544–547. https://doi.org/10.1038/nature16153.
• McCormick, Brendan, Popp, Christoph, Andrews, Benjamin J., and Cottrell, Elizabeth. 2015. "Ten years of satellite observations reveal highly variable sulphur dioxide emissions at Anatahan Volcano, Mariana Islands." Journal of Geophysical Research. D. Atmospheres, 120, (14) 7258–7282. https://doi.org/10.1002/2014JD022856.
• Waters, Laura E., Andrews, Benjamin J., and Lange, Rebecca A. 2015. "Rapid Crystallization of Plagioclase Phenocrysts in Silicic Melts during Fluid-saturated Ascent: Phase Equilibrium and Decompression Experiments." Journal of Petrology, 56, (5) 981–1006. https://doi.org/10.1093/petrology/egv025.
• Andrews, Benjamin J. 2014. "Dispersal and air entrainment in unconfined dilute pyroclastic density currents." Bulletin of Volcanology, 76, (9) 852–852. https://doi.org/10.1007/s00445-014-0852-4.
• Andrews, Benjamin J. 2014. "Magmatic storage conditions, decompression rate, and incipient caldera collapse of the 1902 eruption of Santa Maria Volcano, Guatemala." Journal of Volcanology and Geothermal Research, 282 103–114. https://doi.org/10.1016/j.jvolgeores.2014.06.009.
• Andrews, Benjamin J. and Manga, Michael. 2014. "Thermal and rheological controls on the formation of mafic enclaves or banded pumice." Contributions to Mineralogy and Petrology, 167, (1). https://doi.org/10.1007/s00410-013-0961-7.
• Johnson, Jeffrey B., Lyons, J. J., Andrews, Benjamin J., and Lees, J. M. 2014. "Explosive dome eruptions modulated by periodic gas-driven inflation." Geophysical Research Letters, 41, (19) 6689–6697. https://doi.org/10.1002/2014GL061310.
• Andrews, Benjamin J. and Manga, Michael. 2012. "Experimental study of turbulence, sedimentation, and coignimbrite mass partitioning in dilute pyroclastic density currents." Journal of Volcanology and Geothermal Research, 225-226 30–44. https://doi.org/10.1016/j.jvolgeores.2012.02.011.
• Cardenas, M. B., Lagmay, Alfredo Mahar F., Andrews, Benjamin J., Rodolfo, Raymond S., Cabria, Hillel B., Zamora, Peter B., and Lapus, Mark R. 2012. "Terrestrial smokers: Thermal springs due to hydrothermal convection of groundwater connected to surface water." Geophysical Research Letters, 39. https://doi.org/10.1029/2011GL050475.
• Andrews, Benjamin J. and Manga, Michael. 2011. "Effects of topography on pyroclastic density current runout and formation of coignimbrites." Geology, 39, (12) 1099–1102. https://doi.org/10.1130/G32226.1.

Conference Proceedings

• Bowers, Jade, Wanless, V. D., Schwartz, Darin, Brand, Brittany, and Andrews, Benjamin. 2021. "Elucidating geochemical heterogeneity and evolution of the explosively erupted Curacautin ignimbrite magma, Llaima volcano, Chile." from American Geophysical Union Fall Meeting. https://doi.org/10.1002/essoar.10510104.1.

Book Chapter

• Siebert, Lee, Cottrell, Elizabeth, Venzke, Edward A., and Andrews, Benjamin J. 2015. "Earth's Volcanoes and Their Eruptions: An Overview." In The Encyclopedia of Volcanoes. 2nd ed. Sigurdsson, Haraldur, editor. 239–255. Amsterdam: Academic Press. https://doi.org/10.1016/B978-0-12-385938-9.00012-2.