The deadline to submit a session, town hall, or pre-conference workshop proposal for AGU25 has passed. Please search for and review proposed sessions below. Please note this site is frozen as of 4/29/25 and will not reflect any changes to proposals made after this date.


Conveners will be contacted by the AGU25 Program Committee with any requests for mergers or edits to proposals. Conveners will be notified of the acceptance of their proposal in mid-June.


Abstract submissions will also open in mid-June and the deadline for abstract submissions is 30 July, 2025.


Please visit the AGU25 website for more information or please contact AGU with any questions.

Session Proposal: The Superhot Hydrothermal to Magma Transition: A Scientific Frontier and a Prime Target for Geothermal Energy (AGU25)

V031
The Superhot Hydrothermal to Magma Transition: A Scientific Frontier and a Prime Target for Geothermal Energy

Session ID#: 251772

Session Description:
The fields of volcanology and geothermal engineering now overlap. This session will highlight what we are learning. Drilling has intersected silicic magma at Puna, Hawaii; Krafla, Iceland; and Menengai, Kenya. Boreholes have reached >500oC at multiple sites, first at Kakkonda, Japan. Pinatubo, Philippines was drilled to >300oC at 2-3 km depth, likely into a hydrothermal plume rising from dacitic magma petrologically estimated to be at 5 km depth, of which 5 km3 was subsequently erupted. Drilling at Augustine Volcano, AK may cross the 400oC isotherm at only 1-2 km and reach magma at 2 to 4 km, estimated geophysically and petrologically, respectively.  The superhot regime may be dominantly conductive. If so, it will be thin and close to magma, holding the key to making geothermal competitive with non-green energy sources. We welcome papers based on field and drilling observations, experiments, and modeling of the transition from hydrothermal to magmatic reservoirs.
Co-Sponsor(s):
  • G - Geodesy
  • MR - Mineral and Rock Physics
  • NH - Natural Hazards
  • P - Planetary Sciences
Index Terms:

8411 Thermodynamics [VOLCANOLOGY]
8412 Reactions and phase equilibria [VOLCANOLOGY]
8424 Hydrothermal systems [VOLCANOLOGY]
8439 Physics and chemistry of magma bodies [VOLCANOLOGY]
Primary Convener:  John C Eichelberger, Alaska Department of Natural Resources, Division of Geological and Geophysical Surveys, Fairbanks, United States and Paul Choate
Conveners:  Paolo Papale, Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy, Paul Choate, Choate Technology Services, Cambridge, United Kingdom, Charles Carrigan, Stratify/MH Chew LLC, Washington, United States and Paul Choate
 
Magma in a Thermos Bottle (1865438)
John C Eichelberger, Alaska Division of Geological and Geophysical Surveys, Fairbanks, AK, United States
 
Reconstructing geothermal geological models by combining geophysical, geochemical and geological studies in Tatun volcanoes area, Northern Taiwan and implications for Superhot geothermal exploration (1876813)
Jian-Cheng Lee1, Cheng-Horng Lin2, Chien-Chih Chen3, Hsin-Hua Huang1, Hideaki Hase4, Sheng-Rong Song5, Yi-Chia Lu6, En-Chao Yeh7, Li-Wei Kuo8, Chung-Hsiang Mu9, Yue-Gau Chen10, Sun Lin Chung1 and Geothermal Research Team of Academia Sinica, (1)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (2)Taiwan Volcano Observatory at Tatun, Taipei, Taiwan, (3)Department of Earth Sciences, National Central University, Taoyuan, Taiwan, (4)Geothermal Energy Research & Development Co., Ltd., Tokyo, Japan, (5)Natl Taiwan Univ, Taipei, Taiwan, (6)National Central University, Taipei, Taiwan, (7)National Taiwan Normal University, Department of Earth Sciences, Taipei, Taiwan, (8)National Central University, Department of Earth Sciences, Taoyuan, Taiwan, (9)Institute of Earth Sciences Academia Sinica, Taipei, Taiwan, (10)National Taiwan University, Department of Geosciences, Taipei, Taiwan
 
Detailed Investigation of Micro‑ and Kilometer Scale Isotope Variations (δD, δ′¹⁸O, and Δ′¹⁷O) to Reconstruct the Alteration History of the Geitafell Central Volcano, Iceland (1879586)
Afrid Abdaly Sheik, Western Michigan University, Kalamazoo, MI, United States, David O Zakharov, Western Michigan University, Kalamazoo, United States, Mark Reed, University of Oregon, Department of Earth Sciences, Eugene, United States and Elizabeth Bell, University of California Los Angeles, Earth, Planetary and Space Sciences, Los Angeles, United States
 
Hydrothermal Control on the Cooling and Storage of Shallow Magma Bodies (Invited) (1885271)
Samuel Scott, University of Iceland, Institute of Earth Sciences, Reykjavik, Iceland
 
Exploring Transition from Rhyolitic Magma to Hydrothermal System: Drilling, Stable Isotopes, and Numerical Experiments (Invited) (1901185)
Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, United States and Alexander Simakin, Institute of the Physics of the Earth, Moscow, Russia
See more of: Volcanology, Geochemistry and Petrology
<< Previous Session Proposal | Next Session Proposal >>