Figure 60. Stacked sections of North America from outer core to surface with inset of Lunar Mares for comparison. Read the annotations on the above figure before you start the … [Read More]
Figure 59 (above). North America interpreted, enhanced seismic tomographic plans at 60 km depth and outer core at 2850 km depth with cross-section 36°N. This figure summarises my concept of … [Read More]
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Seismic tomographic research under North and South America, Africa and Eastern Europe from 170 – 550 km depth shows giant ring structures. It is suggested these formed before or during the Late Heavy Bombardment from 4.1 to 3.8 billion years ago. They exist from the surface down to at least 600 km depth. These relatively undeformed rings occur in the supposed mobile mantle. So, Earth down to 600 km depth is not mobile and so the evolution of Earth by earth-wide Plate Tectonics cannot be correct and needs revision.