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\begin{document}

\title{Flat slab-induced hydration weakening and destruction of the North China
Craton}



\author[1]{Jyotirmoy Paul}%
\author[1]{Arne Spang}%
\author[2]{Andrea Piccolo}%
\affil[1]{University of Bayreuth}%
\affil[2]{Mainz Institute of Microtechnology}%


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  \date{May 21, 2024}


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\begin{abstract}
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.%
\end{abstract}%



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