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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 ...
Lava International (stylized as LΛVΛ) is an Indian multinational technology company that manufactures smartphones, laptops, computer hardware, and other consumer electronics. It was founded in 2009 by Hari Om Rai, Shailendra Nath Rai, Sunil Raina, Sanjeev Agarwal, Sunil Bhalla and Vishal Sehgal. [ 1 ]
The lava lake of Halemaʻumaʻu at Kīlauea, Hawaiʻi, United States). Lava lake in Marum crater, Ambrym, Vanuatu. Satellite picture showing the lava lake of Mount Erebus, Antarctica. Aerial view of a lava lake in Pu’u ’Ō’ō crater, east rift zone of Kīlauea. The crater is about 820 ft (250 m) in diameter.
A lava tube is a type of lava cave formed when a low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Tubes form in one of two ways: either by the crusting over of lava channels , or from pāhoehoe flows where the lava is moving under the surface.
The two main types of lava field structures are defined as sheet flow lava and pillow lava. Sheet flow lava appears like a wrinkled or folded sheet, while pillow lava is bulbous, and often looks like a pile of pillows atop one another. [2] An important aspect of lava flow morphology is a phenomenon known as lava flow inflation.
The dashed trajectories are the result of lava pieces with a bright hot side and a cool dark side rotating in mid-air. Volcanology (also spelled vulcanology ) is the study of volcanoes , lava , magma and related geological , geophysical and geochemical phenomena ( volcanism ).
The lava flow hazard zones are based on location of eruptive vents, past lava coverage, and topography. [3]Zone 1 - Includes summits and rift zones of Kilauea and Mauna Loa volcanoes, where vents have been repeatedly active in historical time.
The tendency of felsic lava to be cooler than mafic lava increases the viscosity difference. The silicon ion is small and highly charged, and so it has a strong tendency to coordinate with four oxygen ions, which form a tetrahedral arrangement around the much smaller silicon ion. This is called a silica tetrahedron. In a magma that is low in ...