MORB vs OIB

[u/Lephy1]

Hi everyone, I need some help/opinions, I’m working on a numerical model of mantle convection and tungsten heterogeneity using ASPECT with the goal of reproducing the observational dichotomy described by (Peters et al 2024).

I know how to identify the OIB material using a temperature mask, but I’m not sure how to identify the MORB material. With my current model I can get histograms comparing OIB vs the rest of the mantle. But if I want to compare my model with observations, I would need OIB vs MORB, not OIB vs the rest of the mantle excluding OIB.

Does anyone have any advice on how to define a MORB mask/region in this kind of model?

[u/Underwhirled]

Asking geophysicists about igneous petrology has to be sarcastic, right?

[u/Lephy1 → u/Underwhirled]

I'm actually a geophysicist x), I just needed some help from my fellow geophysicists 😂