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Flat slab-induced hydration weakening and destruction of the North China Craton
  • Jyotirmoy Paul,
  • Arne Spang,
  • Andrea Piccolo
Jyotirmoy Paul
University of Bayreuth

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Arne Spang
University of Bayreuth
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Andrea Piccolo
Mainz Institute of Microtechnology
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In this study, we develop two dimensional (2-D) box models to identify the most viable reasons for the destruction of the North China Craton (NCC). We examine the role of flat slab-induced hydration, high-density lower crust, and weak mid-lithospheric discontinuity in our models. Results indicate that flat slab-induced hydration weakening of the eastern part of the NCC can lead to rapid craton destruction if hydration weakening rates are sufficiently fast. This accelerated hydration rate may be attributed to the extensive carbonatite magmatism within the eastern part of the NCC, facilitating a faster pathway for water diffusion throughout the craton. Craton destruction is contingent upon the craton’s density exceeding the surrounding mantle density, and its viscosity decreasing below 1022 Pa s. We observe that the presence of a dense lower crust or a weak mid-lithospheric discontinuity fail to destroy the NCC unless it is weakened.
03 Apr 2024Submitted to ESS Open Archive
12 Apr 2024Published in ESS Open Archive