Dynamics of Oceanic Triple Junctions, Hotspots, and Bathymetric Plateaus

该项目将开发三维三维数值模型来研究地幔流动、熔融和地壳增生的模式。虽然在板块构造记录中很重要，但就它们对地壳增生等过程的影响而言，三重连接点还没有得到充分的研究。数值模型将考虑在绝对板参照系中可变粘度、熔化、浮力和三联结的迁移。通过加入热浮力熔体源，数值模型还将考虑柱脊相互作用和海相大火成岩省的形成。所提议的工作的更广泛的影响包括有助于解决有关三联结和大火成岩省的基本问题，培养研究生，并支持新的研究者。

This program will develop three-dimensional numerical models of triple junctions to examine patterns of mantle flow and melting and crustal accretion. While important in the plate tectonic record, triple junctions have not been fully examined in terms of their impact on such processes as crustal accretion. The numerical models will take into account variable viscosity, melting, buoyancy, and migration of triple junctions in the absolute plate reference frame. Through the addition of a thermally buoyant melt source, the numerical models will also consider plume-ridge interaction and the formation of marine large igneous provinces. Broader impacts of the proposed work include contributing to the resolution of fundamental questions about triple junctions and large igneous provinces, training of a graduate student, and support for a new investigator.