True Polar Wander
First I've heard of this.
Around 84 million years ago, Earth's crust and mantle rotated around the liquid outer core, causing the entire planet to tilt by approximately 12 degrees. This phenomenon moved continents significantly, shifting the location of places like New York City to where Tampa, Florida, is now, before the planet "snapped back" to a more upright position over a period of about five million years.
Cases of true polar wander have occurred several times in the course of the Earth's history.[lIt has been suggested that east Asia moved south due to true polar wander by 25° between about 174 and 157 million years ago. Mars, Europa, and Enceladus are also believed to have undergone true pole wander, in the case of Europa by 80°.
Apparently it is a very slow process though and we do not even know it is happening.
Around 84 million years ago, Earth's crust and mantle rotated around the liquid outer core, causing the entire planet to tilt by approximately 12 degrees. This phenomenon moved continents significantly, shifting the location of places like New York City to where Tampa, Florida, is now, before the planet "snapped back" to a more upright position over a period of about five million years.
Cases of true polar wander have occurred several times in the course of the Earth's history.[lIt has been suggested that east Asia moved south due to true polar wander by 25° between about 174 and 157 million years ago. Mars, Europa, and Enceladus are also believed to have undergone true pole wander, in the case of Europa by 80°.
Apparently it is a very slow process though and we do not even know it is happening.
