2026-09-20T04:15:25Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1579642025-04-07T08:48:22Zcom_1721.1_7582com_1721.1_7581col_1721.1_131022
Grove, Timothy L.
Hoyos Muñoz, Susana
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
2025-01-13T19:55:32Z
2025-01-13T19:55:32Z
2024-05
2024-06-13T13:40:42.177Z
https://hdl.handle.net/1721.1/157964
https://orcid.org/0000-0001-9808-027X
The compositional and thermal evolution of rocky bodies in the Solar System is determined by the melt generation and crystallization processes in their interiors. This thesis investigates large-scale igneous processes in the Earth, the Moon, and the Angrite Parent Body using a multidisciplinary approach that integrates high-pressure experiments, geochemical analysis, and petrologic modeling. In Chapter 1, I examine the mantle source lithology of Hawaiian pre-shield tholeiitic volcanism through high-pressure equilibrium experiments and geochemical modeling. In Chapter 2, I define the crystallization sequence and petrogenesis of the young mare basalts collected by the Chang'e 5 mission and propose a model for melt generation in the Moon at ~ 2Ma. In Chapter 3, I estimate a minimum radius of ~1600 km for the Angrite Parent Body using near-liquidus equilibrium experiments. The implications for planet formation models of a differentiated moon-sized planetesimal accreting in the first 3 Ma of the Solar System are also discussed. In the fourth Chapter, I introduce a new experimental technique for studying melt migration in volcanoes, which allowed me to observe and describe the mechanisms that control melt migration in the upper crust. Together, these studies advance our knowledge of melt production and crystallization conditions in planetary interiors and provide fundamental insights into the geologic history of the Earth and other rocky bodies in the Solar System.
Ph.D.
Massachusetts Institute of Technology
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Copyright retained by author(s)
https://creativecommons.org/licenses/by-nc/4.0/
Experimental Constraints on Melting Processes in the Earth and Small Rocky Bodies
Thesis
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Doctoral
Doctor of Philosophy
Publication
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<Abstract>The compositional and thermal evolution of rocky bodies in the Solar System is determined by the melt generation and crystallization processes in their interiors. This thesis investigates large-scale igneous processes in the Earth, the Moon, and the Angrite Parent Body using a multidisciplinary approach that integrates high-pressure experiments, geochemical analysis, and petrologic modeling. In Chapter 1, I examine the mantle source lithology of Hawaiian pre-shield tholeiitic volcanism through high-pressure equilibrium experiments and geochemical modeling. In Chapter 2, I define the crystallization sequence and petrogenesis of the young mare basalts collected by the Chang'e 5 mission and propose a model for melt generation in the Moon at ~ 2Ma. In Chapter 3, I estimate a minimum radius of ~1600 km for the Angrite Parent Body using near-liquidus equilibrium experiments. The implications for planet formation models of a differentiated moon-sized planetesimal accreting in the first 3 Ma of the Solar System are also discussed. In the fourth Chapter, I introduce a new experimental technique for studying melt migration in volcanoes, which allowed me to observe and describe the mechanisms that control melt migration in the upper crust. Together, these studies advance our knowledge of melt production and crystallization conditions in planetary interiors and provide fundamental insights into the geologic history of the Earth and other rocky bodies in the Solar System.</Abstract>
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