Abnormally low heat flow in Southeast China resulted from remnant slab subducted beneath the east Asian lithosphere

• DOI: 10.1111/ter.12598
• Publication Date: 2022-04-21T08:53:47Z
• Authors: Haonan Gan; Guiling Wang; Bo Wang; Xiao Wang; Wenjing Lin; Gaofan Yue; Xianfeng Tan
• Keywords: Slab window; Slab; Asthenosphere

Abstract Subducted remnant slabs play an important role in the geodynamics and evolution of Earth, but their behaviour mantle is not well understood. Terrestrial heat flow thermal lithosphere structure provide crucial constraints on lithospheric dynamics. Based whole‐well steady‐state temperature logs conductivity measurements core samples from a scientific borehole, we obtained new high‐quality terrestrial values for East Asia. The was calculated at 60.6 ± 16.0 mW/m 2 with high crust/mantle ratio 1.41, suggesting hot‐crust‐cold‐mantle structure. thickness eastern Fujian estimated to be 152–166 km, indicating thick cold lithosphere. We demonstrate that cooling caused by palaeo‐slab Palaeo‐Pacific plate subducted beneath SE China. slab blocked convection into bottom Eurasian Plate.