© United States Antarctic Program/Wikipedia Supercontinent Rodinia This map of supercontinent Rodinia shows the ancient locations of the continents. "Mauritia" is sandwiched between what is now India and Madagascar.
The small strip of continent was once tucked tightly between the lands now known as India and Madagascar, back when those areas were packed into a supercontinent known as Rodinia. (It's the older and less-famous relative of supercontinent Pangaea.) Evidence of this sandwiched continent came from sand grains on Mauritius beaches, according to Trond Torsvik of the University of Oslo in Norway and colleagues.
Rodinia would have existed from the Precambrian era, about 2 billion years ago, to around 85 million years ago when plate tectonics broke it apart. Continental breakup is usually a mantle plume's doing--hot rock from within the Earth softens up tectonic plates, which eventually split. This is how the land masses now known as Madagascar, India, Australia and Antarctica broke up and migrated to their current locations on the planet. As this took place and the Indian Ocean formed, small fragments located on the edges of the rupture zone broke off--this is how the Seychelles came to be. Mini-continent Mauritius just wasn't so lucky, and it slipped beneath the waves, disappearing with time.
© GFZ/SteinbergerAncient Lost Continent, Newly Discovered: The areas with topography just below the sea surface are now regarded as continental fragments. The colored track west of Reunion is the calculated movement of the Reunion hotspot. The black lines with yellow circles and the red circle indicate the corresponding calculated track on the African plate and the Indian plate, respectively. The numbers in the circles are ages in millions of years.
They examined sands in Mauritius that formed from eroded volcanic rocks, dating to about 9 million years ago. But when the team looked at these sand grains, they found ancient zircon minerals that were far more ancient--between 660 and 1,970 million years old. The presence of these ancient zircons points to microcontinent fragments churning up due to more recent volcanic activity, the team says.
The discovery of a possible microcontinent fragment suggests continental leftovers like the Seychelles might be more common than scientists thought. A paper describing the research is published this week in Nature Geoscience.
Why does it all fit back together? And why is the oldest crust on land? And why not at the subduction zones in the oceans?
Geiod Expansion is the answer.
The more I research the subject of tectonic plate movement. I’m beginning to believe that the earth has expanded and is continuing to expand. The subduction along the plate boundaries is a result of the expansion of the Earth geoid. A smaller geoid in the past answers a lot of questions.
Do the reseach, see for yourself.
But mainstream science would say otherwise. But remember their science is also based on the weakest force in the universe too, gravity.
Which is like calling the bandage the reason for a cut.