Definition of flood basalt
Webbasalt, extrusive igneous (volcanic) rock that is low in silica content, dark in colour, and comparatively rich in iron and magnesium. Some basalts are quite glassy (tachylytes), and many are very fine-grained and compact. It … WebThe main source of rock in this formation is basalt, but both mafic and felsic rocks are present, so this formation is officially called a Flood Basalt Province. The inclusion of mafic and felsic rock indicates multiple other …
Definition of flood basalt
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Webbasaltic flows. THE WORD basalt is said to have an Ethiopian origin, meaning “black stone.”. Basalt is a dark gray to black, dense to finely grained igneous rock that is the result of lava eruptions. Basalts are not only the most abundant lavas, but they are also the most voluminous. Basalt, when exposed to the air, becomes covered with a ... WebA logical definition of lava flow must embrace both simple lava sheets and substantial lava shields (compound lava flows) up to 600 m high. Flood basalt piles include both compound and simple flows, but the most extensive and far-reaching flows are simple and they are believed to form when the rate of extrusion of lava is particularly high.
Webbasalt. 1. (Geological Science) a fine-grained dark basic igneous rock consisting of plagioclase feldspar, a pyroxene, and olivine: the most common volcanic rock and usually extrusive. See flood basalt. 2. (Ceramics) a form of … WebA flood basalt (or plateau basalt) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava.Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the earth via a mantle plume. Flood basalt provinces such as the Deccan Traps of India are often …
WebJul 4, 2014 · A flood basalt province, built from different eruptive fissures dispersed over wide areas, can be considered a polygenetic volcano without any dominant vent. … WebA flood basalt is a type of volcanic activity that results in massive amounts of lava flowing out from the Earth’s crust and covering large areas. This occurs when magma rises …
Webflood basalt. n. (Geological Science) a very extensive lava flow of basaltic composition that has issued from a fissure, often to be found as part of a series of such flows …
WebBasalt is also an abundant rock on the Moon. Much of the Moon's surface is underlain by basaltic lava flows and flood basalts. These areas of the Moon are known as "lunar maria." Large areas of the Moon have been … sheri patterson facebookWebFeb 9, 2024 · The meaning of BASALT is a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite. a … sql select records based on max dateWebThe flood basalts probably damned rivers. When the rivers returned the water seeped down the cracks in the cooling lava and caused rapid cooling from the surface downward (Long and Wood, 1986). The division of colonnade and entablature is the result of slow cooling from the base upward and rapid cooling from the top downward. sheri onewealthllc.comA flood basalt (or plateau basalt ) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the earth via a mantle plume. Flood basalt provinces … See more Flood basalts are the most voluminous of all extrusive igneous rocks, forming enormous deposits of basaltic rock found throughout the geologic record. They are a highly distinctive form of intraplate volcanism, … See more Theories of the formation of flood basalts must explain how such vast amounts of magma could be generated and erupted as lava in such short intervals of time. They must also … See more Flood basalts contribute significantly to the growth of continental crust. They are also catastrophic events, which likely contributed to many mass extinctions in the geologic record. Crust formation The extrusion of … See more • Geology portal • Supervolcano – Volcano that has erupted 1000 cubic km of lava in a single eruption • Volcanic plateau – Plateau produced by volcanic activity See more Large Igneous Provinces (LIPs) were originally defined as voluminous outpourings, predominantly of basalt, over geologically very short durations. This definition did not … See more Representative continental flood basalts and oceanic plateaus, arranged by chronological order, together forming a listing of See more The interlocking crystals of flood basalts, which are oriented at random, make trap rock the most durable construction aggregate of all rock types. See more sherio.ioWebColumbia River Basalts. The Columbia River Basalt Group is the product of the largest eruptions in North America’s history. The Columbia River Basalts are flood basalts (or … sql select name with max valueWebOver time, the layers build up to form a lava plateau. These plateaus are often called 'flood basalts' because the molten basalt flowed out of the volcano like it was water and … sql select left outer join whereWebA flood basalt is a type of volcanic activity that results in massive amounts of lava flowing out from the Earth’s crust and covering large areas. This occurs when magma rises through fissures, or cracks, in the crust and spreads out over hundreds or thousands of square kilometers. Flood basalts are characterized by their low viscosity and ... sql select only most recent records