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The deposited lava along the North Shore of Lake Superior is 7,620 m (5 mi) thick. [9] This was a fast-spreading rift; the resulting basalts show little interaction with the then-existing rock. These immense volumes of mafic lava were generated in two major pulses, mostly via a hot mantle plume. [21]
Caconemobius fori is a small cricket, approximately 9 mm (0.35 in) in length. [2] It lacks wings but is capable of jumping significant distances when disturbed. This species is darkly colored with an overall shiny quality, causing them to blend in extremely well with the freshly solidified lava that makes up their habitat.
A lava spine (or lava spire) is a vertical growth of solid lava that is forced from a volcanic vent. A lava spine can either be formed by viscous lava slowly being pushed out of the vent, or by magma that has solidified within the vent before being pushed out.
The word lava comes from Italian and is probably derived from the Latin word labes, which means a fall or slide. [2] [3] An early use of the word in connection with extrusion of magma from below the surface is found in a short account of the 1737 eruption of Vesuvius, written by Francesco Serao, who described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of ...
As the lava flowed across the wet sod, the water of the marsh started to boil, the vapour rising through the lava forming lava pillars from drainpipe size up to several meters in diameter. [4] As the lava continued flowing towards lower ground in the Mývatn area, the top crust collapsed, but the hollow pillars of solidified lava remained. The ...
The field was active from 190,000 to 155,000 years ago [2] and includes lava flows, cinder cones, and spatter cones. [1] The oldest lava flows cover about 23 square miles (60 km 2). The cones are aligned and possibly formed above two roughly north-south trending fissures. [3] Vulcan (also called J Volcano) is the highest feature. Its base is ...
Formed of basanite, it is a remnant of a basaltic lake formed of solidified lava and is the site of the most recent volcanic activity in the range. It was formed 2.9 million years ago, above an accumulation of several layers of pyroclastic trachyandesite .
Igneous rock (derived from the Latin word igneus, meaning of fire, from ignis meaning fire) [9] is formed through the cooling and solidification of magma or lava. This magma may be derived from partial melts of pre-existing rocks in either a planet 's mantle or crust .