GEOLOGY

Detailed explanation-1: -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. This process occurs when oceanic crust is pushed back into the mantle at subduction zones.

Detailed explanation-2: -Answer and Explanation: The youngest seafloor rocks can be found on mid-ocean ridges, which form part of the ocean crust. Mid-ocean ridges are dynamic geographic features located in places where the Earth’s plates are pulling away from one another; they are continually producing new rocks.

Detailed explanation-3: -The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.

Detailed explanation-4: -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-5: -The newest, thinnest crust on Earth is located near the center of mid-ocean ridge-the actual site of seafloor spreading. The age, density, and thickness of oceanic crust increases with distance from the mid-ocean ridge.