GEOLOGY

Detailed explanation-1: -Scientists discovered that as they moved away from the mid-ocean ridge, the samples of both the crustal rock and sediments on the ocean floor increased in age. The newest, youngest rock was closest to the mid-ocean ridge. This evidence supported the theory of seafloor spreading.

Detailed explanation-2: -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-3: -The rocks that make up the crust on the ocean’s floor are youngest near the Mid-Atlantic Ridge. They are colored red in this picture. The rocks are older (yellow, green) further from the spreading ridge. Molten lava pours out at the mid-ocean ridge.

Detailed explanation-4: -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.