In seafloor spreading, new oceanic crust is added at the mid-ocean ridge, and, as intrusion continues, seafloor moves toward the edge of the oceanic plate, where it is ultimately pulled back down into the magma below. ... It has deep trenches and high ridges.
Radioactive isotope with long half life would be the way to date a sample of rock that you suspect as being one of the earliest on Earth. Archaeologists very often use this method for checking the dates of the materials they excavate. I hope that this is the answer you were looking for and it has come to your help.
Chronology is defined as a sequential order of events.
Answer:
By answering questions of other people
Explanation:
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The answer is 10, my friend!
