Can anyone describe how valcanoes form along the mid-ocean ridge?

Answer 1

As the mantle convects (circulates) hot magma forces its way upward and cracks the lithosphere, pouring out onto the ocean floor. These are not volcanoes, but they form the mid-oceanic ridge, which is the largest mountain chain on the Earth. The only volcanoes on the mid-oceanic ridge are in Iceland, and it is not clearly understood why the volcanoes here are above sea level, a phenomenon not seen anywhere else on the Earth.

Answer 2

All volcanoes are formed by the accumulation of magma (molten rock that forms below the earth's surface). Magma can erupt through one or more volcanic vents, which can be a single opening, a cluster of openings, or a long crack, called a fissure vent. It forms deep within the earth, generally within the upper part of the mantle (one of the layers of the earth’s crust), or less commonly, within the base of the earth's crust. High temperatures and pressures are needed to form magma. The solid mantle or crustal rock must be melted under conditions typically reached at depths of 80 to 100 km (50 to 60 mi) below the earth’s surface.

Once tiny droplets of magma are formed, they begin to rise because the magma is less dense than the solid rock surrounding it. The processes that cause the magma to rise are poorly understood, but it generally moves upward toward lower pressure regions, squeezing into spaces between minerals within the solid rock. As the individual magma droplets rise, they join to form ever-larger blobs and move toward the surface. The larger the rising blob of magma, the easier it moves. Rising magma does not reach the surface in a steady manner but tends to accumulate in one or more underground storage regions, called magma reservoirs, before it erupts onto the surface. With each eruption, whether explosive or nonexplosive, the material erupted adds another layer to the growing volcano. After many eruptions, the volcanic materials pile up around the vent or vents. These piles form a topographic feature, such as a hill, mountain, plateau, or crater, that we recognize as a volcano. Most of the earth's volcanoes are formed beneath the oceans, and their locations have been documented in recent decades by mapping of the ocean floor.

Answer 3

A mid ocean ridge is the reuslt of a divergent boundary interior the sea. Magma rises on the middle as both places bypass faraway from one yet another, progression a mountain-like element. except the plates proceed to bypass aside, so the ridge would not get to be amazingly tall (in many circumstances).

Answer 4

As the continental plates slowly drift apart, they expose more of the magma welling up from the mantle, thereby creating magma flows and volcanoes.