I was wondering if reconstructing paleo depths of a subduction zone (with P-T-t path) would be possible to understand what was the original dip of that subduction zone and in which direction it went roll-back.
Hi Massimiliano,
Something akin to the analysis you are suggesting has been attempted in the case of subduction dip angle beneath the Himalayan orogen (see Kaneko (2003). See also Leech (2005) for a critique of Kaneko’s approach.
Regards
Graham
Kaneko, Y., et al. "Timing of Himalayan ultrahigh‐pressure metamorphism: Sinking rate and subduction angle of the Indian continental crust beneath Asia." Journal of Metamorphic Geology 21.6 (2003): 589-599.
Leech, Mary L., et al. "The onset of India–Asia continental collision: early, steep subduction required by the timing of UHP metamorphism in the western Himalaya." Earth and Planetary Science Letters 234.1 (2005): 83-97.
I think it could, but the depth is so much, I do not know if any kind of equipment could reach it.
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