When did the atlantic ocean started to open?
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this question is related to earth science. it is related to era's and periods. so ho wmany years ago did the atlantic ocean started to open.
http://en.wikipedia.org/wiki/Atlantic_Ocean#History
The Atlantic Ocean began to open during the Mesozoic Era, specifically during a period called the Triassic (approximately 252 million years ago). The opening of the Atlantic Ocean is part of a larger process known as plate tectonics, where the Earth's lithosphere (the rigid outer layer of the Earth) is divided into several large plates that move relative to one another. The Atlantic Ocean opened as a result of the separation of two such plates: the North American plate and the Eurasian plate.
To determine when exactly the Atlantic Ocean started to open, scientists use various techniques, such as studying rock formations, analyzing magnetic anomalies, and dating the oceanic crust. One important piece of evidence is the presence of magnetic stripes in the oceanic crust. As new crust forms at the mid-ocean ridges (underwater mountain ranges), minerals in the rock align with the Earth's magnetic field at the time of their formation. By measuring the magnetic orientation of these rocks, scientists can determine the age of the oceanic crust and infer when the Atlantic Ocean began to open.
In conclusion, the Atlantic Ocean started to open about 252 million years ago during the Triassic period, as a result of the separation between the North American and Eurasian plates. The age of the oceanic crust and the study of magnetic anomalies help scientists determine this timing.