96 Level-Set Runs Show Ca/Bo Ratio Near Unity Separates Sinking from Shear Regimes in Mafic Enclaves
Computational sweeps across six orders of capillary number demonstrate that mafic enclave morphology encodes the balance of shear and buoyancy rather than finite strain alone. The Ca/Bo ratio near unity cleanly partitions sinking from shear-dominated regimes, with confinement controlling rotation versus retraction. These findings revise strain interpretations used in volcanic plumbing-system reconstructions.
Validation against three-dimensional natural examples and time-resolved field strain data remains essential. Future work should incorporate temperature-dependent viscosity, out-of-plane flow, and crystal-bearing rheologies to test whether the reported Ca/Bo threshold and confinement effects persist. Such extensions would tighten links between simulated microstructures and observable volcanic monitoring signals such as seismicity or gas emissions.
Sources (3)
- [1]Primary Source(https://arxiv.org/abs/2611.05575)
- [2]Supporting Source(https://doi.org/10.1016/j.jvolgeores.2022.107712)
- [3]Supporting Source(https://doi.org/10.1029/2021JB022345)