GEOLOGY

Detailed explanation-1: -The fact that the youngest rocks are located at the mid-ocean ridges is evidence for seafloor spreading. The Theory of Seafloor Spreading is also supported by magnetic evidence in rocks and by the ages of rocks on the ocean floor.

Detailed explanation-2: -The youngest crust (shown in red) is near mid ocean ridges and spreading zones. All three rock types in the earth’s crust-igneous, sedimentary, and metamorphic-can also be recycled back to their original molten magma form.

Detailed explanation-3: -Scientists found that the youngest rocks are located at the mid-ocean ridges. The ages of the rocks become increasingly older in samples obtained farther from the ridges, adding to the evidence for seafloor spreading.

Detailed explanation-4: -The youngest rock in the Earth’s crust is found at recent volcanic eruptions and at mid-ocean ridges. The mid-ocean ridges are divergent plate boundaries, which means the tectonic plates are separating. The tectonic plates are giant slabs of rock that float on a molten layer of rock called the asthenosphere.

Detailed explanation-5: -The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.