Control of super mantle trees over globe tectonics
Jason and Tuzo super mantle plumes together resemble a banyan tree growing on the core-mantle boundary(CMB)with a"root"on top of the Earth's outer core,"trunk"(1600～2890 km),"crown"(110～1600 km),and"branches"(above 110 km)and are thus termed"super mantle trees"to reflect the integrity of low-shear-wave-velocity anomalies in the mantle and highlight their role in the connect the core and crust and their effects of global tectonics during Earth's evolution.Here,we show that a mantle plume is a part or"branch"of a super mantle tree.The planar distribution resembles the global plate contour and basalt age distribution,i.e.,plate tectonics may start at 110 km.A geochemical transition layer may lie at 1550 km to 1600 km,with different geochemical indexes for the upper and lower spaces.There may be geochemical(mantle)separation surfaces between Jason and Tuzo super mantle trees,with the northern and southern ends approximately pointing to the geomagnetic north and south poles,respectively,and current growth spaces in the Pacific and Atlantic hemispheres.A three-dimensional(3D)structural model of the Tibetan Plateau and surroundings shows that the rotation of Jason and Tuzo super mantle trees changes or destroys the basic global tectonic framework,which the canopy movement further refines and transforms into a complex and regular panorama.
super mantle treeglobe tectonicsmantle separation surfacemantle movement3D structural model of the Tibetan Plateau
国家科技期刊平台
NSTL
万方数据
维普
