5:15 PM - 6:45 PM
[MIS23-P06] Advancements and challenges in geodynamic modeling of convergent plate boundaries: Comparing numerical simulation outcomes with geological observations
Keywords:geodynamic-modelling, exhumed metamorphic rocks, plate boundary rocks, I2VIS code
One breakthrough in the study of large-scale material flow in plate convergence zones has been the introduction of the I2VIS code (Gerya and Yuen, 2003) and its application to analyze the dynamics of plate convergence zones. Recently, geodynamic modeling using the I2VIS code on personal computers has allowed for the simple verification of past material flows in plate convergence zones, interpreted through geology, petrology, and geochronology. For example, Morita, Tsujimori et al. (2022) propose a new template for deciphering the dynamics of continental collision zones, especially the issue of time scales, by combining traditional metamorphic petrology and geochronology with two-dimensional dynamic modeling, offering more reliable interpretations of past dynamics from studies of natural metamorphic rocks. The spread of the I2VIS code also enables "modeling-inspired research" that seeks evidence in nature for unexplained processes suggested by computer experiments. However, there are still various discrepancies and divergences between the virtual world recreated by modeling and the natural geological record. Like the widely used thermodynamic phase equilibrium modeling (such as the pseudosection method), misunderstanding the basic parameters and computational algorithms without understanding their foundation can lead to a risk of producing a large number of convenient ad-hoc interpretations.
In this presentation, we will explore the capabilities and limitations of dynamic modeling in clarifying material movements within plate convergence zones. We will delve into the unanswered questions, outline the necessary research approaches, and integrate findings from our ongoing modeling efforts and geological observations.
In this presentation, we will explore the capabilities and limitations of dynamic modeling in clarifying material movements within plate convergence zones. We will delve into the unanswered questions, outline the necessary research approaches, and integrate findings from our ongoing modeling efforts and geological observations.