Pinball1970
Valued Senior Member
Can we have a look on one more "pseudo"-science picture ?
According to the location of the ice masses during our last ice age, the old north pole could theoretically be in Greenland! But only theoretically!
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They are measured via GPS
"The GPS satellite network includes twenty-four satellites that are currently in orbit 20,000 km above the Earth as part of the NavStar system of the U.S. Department of Defense. These satellites continuously transmit radio signals back to Earth. To determine a precise position on Earth (longitude, latitude, elevation) triangulation is used. From any one position on earth one must simultaneously receive signals from at least four satellites, recording the exact time and location of each satellite when its signal was received. By repeatedly measuring distances between specific points, geologists can determine if there has been active movement between plates.
Plate motion can be measure as relative movement or absolute movement. Absolute plate movement is the motion of a plate with respect to the Earth’s deep interior (Figure 14). Relative movement refers to the movement between two plates at a given point on the plate boundary."
