Mid-Atlantic Ridge also known as mid ocean ridge is an underwater system formed by divergent plate boundary. This is the site where the North American plate is moving westward, and the Eurasian and African plates are moving eastward. The result is a big scar down the center of Atlantic Ocean where magma is rising from the mantle to fill in the gap that is being created.
Using your understanding of the composition of lithosphere, what type of rock is being created by magma being deposited along mid-ocean ridge? Do you think Iceland is
composed of continental or oceanic rocks? Why?
Using your understanding of the composition of lithosphere, what type of rock is being created by magma being deposited along mid-ocean ridge? Do you think Iceland is
composed of continental or oceanic rocks? Why?
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☆This bubbled-up magma is cooled by frigid seawater to form igneous rock. This rock (basalt) becomes a new part of Earth's crust. Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor.
☆Iceland is a place where a mid-ocean ridge can be seen on land, Iceland is probably the only place in the world where the effects of two major tectonic plates drifting apart can easily be observed above sea level.The thick crust of Iceland and the surrounding Iceland plateau is generated mainly by accumulation of young magmatic rocks and is therefore oceanic in nature. Geochemical and geophysical data, however, indicate that fragments of continental crust are also present beneath the southeast coast of Iceland.