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The magma hardens and crystallizes as it latches onto the moving plate and continues to cool over millions of years as it move farther away from the divergent boundary.

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(You may have heard this fact before, and while true, there is a logical explanation as to why.) Seafloor mapping, in its earliest, most primitive form, consisted of lowering weighted lines and measuring how far the sunk.This was done mostly to determine near-shore hazards for navigation.An apparently strong argument for an old earth is the seeming agreement between multiple (and supposedly independent) dating methods which yield “millions of years.” Uniformitarian scientists claim that chemical clues within the seafloor sediments tell a “story” of climate change over millions of years and that this “story” agrees well with expectations of the astronomical (or Milankovitch) theory of Pleistocene ice ages. Yet secular scientists routinely use the astronomical theory to date the seafloor sediments in a technique called “orbital tuning.” Of course, this argument is circular, since the astronomical theory of ice ages is simply assumed to be correct and is used as a framework for interpreting chemical clues within the seafloor sediments. A younger oceanic crust is then formed, causing the spread of the ocean floor.

The new rock is dense but not as dense as the old rock that moves away from the ridge.The ocean floor is a mysterious place that marine geologists and oceanographers have struggled to fully grasp.In fact, scientists have mapped more of the surface of the Moon, Mars and Venus than the surface of our ocean.It is the lasting remnant of an ancient ocean, the Tethys, that is shrinking as Africa and Europe collide in the Alpide orogeny.At 280 million years, it still pales in comparison to the four billion-year-old rock that can be found on the continental crust.He believed that the high temperature was due to the magma that leaked out from the ridge.