Lava pillars - NOAA Pacific Marine Environmental Laboratory (PMEL)
Lava pillars are hollow inside forming a pipe-like channel between the bottom and the top of a lava flow. They sometimes coalesce to form walls or can be attached to other pillars by natural bridges. Lava pillars originate as gaps between lava lobes as a lava flow initially advances.
Using submarine lava pillars to record mid-ocean ridge eruption ...
2000年5月30日 · Submarine lava pillars are hollow, glass-lined, basaltic cylinders that occur at the axis of the mid-ocean ridge, and within the summit calderas of some seamounts. Typically, pillars are ∼1–20 m tall and 0.25–2.0 m in diameter, with subhorizontal to horizontal glassy selvages on their exterior walls.
Lava pillars - Wikipedia
Lava pillars are common within collapsed sheet flow terrain. Lava pillars are hollow inside forming a pipe-like channel between the bottom and the top of a lava flow. They sometimes coalesce to form walls or can be attached to other pillars by natural bridges. Lava pillars originate as gaps between lava lobes as a lava flow initially advances ...
Lava pillars - AMNH
Part of Hall of Planet Earth. These pillars were collected on the East Pacific Rise. The cold water solidified the surface, which insulated the molten lava inside. Seawater trapped under the molten flow percolated upward, cooling the surrounding lava …
Lava pillar animation
The lava pillar is a hollow pipe connecting the upper and lower crusts of the flow, allowing seawater trapped beneath the flow to escape upwards. (2) As lava drainback begins, small cavities form under the upper lava crust, and seawater is immediately syringed into these cavities through the crust above.
Incorporation of seawater into mid-ocean ridge lava flows …
2006年12月15日 · Evidence for the interaction between seawater and lava during emplacement on the deep seafloor can be observed in solidified flows at a variety of scales including rapid quenching of their outer crusts and the formation of lava pillars through the body of the flow.
Using submarine lava pillars to record mid-ocean ridge eruption ...
2000年1月1日 · Submarine lava pillars are hollow, glass-lined, basaltic cylinders that occur at the axis of the mid-ocean ridge, and within the summit calderas of some seamounts. Typically, pillars are ~1-20 m tall and 0.25-2.0 m in diameter, with subhorizontal to horizontal glassy selvages on their exterior walls.
Quantitative constraints on the growth of submarine lava pillars …
2003年11月20日 · These data provide the first quantitative constraints on the timescale of lava pillar formation and the rates of submarine lava flow inflation and drainback. They also allow comparisons to lava flow inflation rates observed on land, to theoretical models of crust formation on submarine lava, and to previous models of pillar formation.
Water and lava, but — curiously — no explosion - University at Buffalo
2013年10月7日 · Deep-sea basalt pillars form when columns of super-heated water rise between pillows of lava on the ocean floor, cooling the molten rock into hollow, pipe-like minarets. The structures grow taller as lava levels rise, and remain standing even after volcanic eruptions end and lava levels fall again.
lobate roof are commonly preserved around the fluid lava depressions and also where they form bridges between adjacent pillars. In most cases the lava pool appears to be concave upward