Planet Earth and Plate Tectonics Earth is a rocky, dense planet that formed about 4.6 billion years ago from molten material. This material has been cooling and settling ever since. At the center of the Earth lies the extremely hot and dense core. Surrounding the core lies the mantle, and ...
Present day plate movement after Saria et al. [4] (Nubian plate fixed). (b) Geological map, after Persits et al. [13], Geological Survey of Ethiopia [14], Geological Survey of Tanzania [15] and Schlüter [16]. In order to better understand the geometry and kinematics of rifting in ...