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单词 basalt
释义

Definition of basalt in English:

basalt

noun ˈbas(ə)ltˈbasɔːltbəˈsɔlt
mass noun
  • 1A dark fine-grained volcanic rock that sometimes displays a columnar structure, typically composed largely of plagioclase with pyroxene and olivine.

    Example sentencesExamples
    • Further up section the geology is dominated by a succession of unmetamorphosed but strongly fractured and veined blocky andesites, basalts and tuffaceous rocks.
    • Some areas of this lava formation are highly mineralized, whereas other equally large areas are hard, solid black basalt without any minerals.
    • These are invariably volcanic rocks, including rhyolites, andesites, basalts, and their explosive equivalents, pyroclastic rocks.
    • On one face of the stone, a tablet of extremely hard black basalt, there is a long trilingual inscription; the three texts begin written one above other.
    • When wet, the basalt changes colour from silvery grey to gleaming black.
    • The Zeederbergs basalts are dominantly tholeiitic and compositionally akin to continental flood basalts.
    • In this interpretation, the Basic Complex consists of basalts, pillowed in places, and derived volcaniclastic rock together with background mudrock.
    • Oceanic sediments on top of the basalts crop out on the northern margin of the ophiolite.
    • At ground level, a bistro and book shop have been elbowed aside to create a senselessly spacious foyer, floored in black basalt.
    • Further east is Diyarbakir, a sultry place, where groups of Kurds lurk on the street corners and the black basalt of the walls and the cobbles fill the alleys with its funereal tones.
    • Thick sequences of basalts form the Morgedal and Gjuve formations and include series of sub-aerial lava flows.
    • Gjuve basalts are generally more primitive and have a greater range of major element compositions than the Morgedal basalts.
    • With walls of black basalt and ice rising 300 metres on each side of the narrow channel, this impression - of cruising through a high mountain valley - is not far from the truth.
    • There are rare dykes with compositions similar to ocean-island basalts.
    • This implies that individual primitive magmas are more likely to represent the composition of their individual mantle sources than more fractionated basalts.
    • Instead there was just a headstone of black basalt.
    • It seems unlikely that the final magma pressure would have been the maximum value of magma pressure reached during the intrusive episode, and so flood basalts probably were erupted.
    • Further, it is a common vesicle-filling mineral in basalts.
    • Calcite is one of the frequently occurring minerals in cavities within the basalts of the Deccan trap rocks of Maharashtra State, India.
    • Some are made up of dense, black, homogeneous basalt, with no visible mineral grains.
    1. 1.1 A kind of black stoneware developed by Josiah Wedgwood.
      Example sentencesExamples
      • If was used to imitate Josiah Wedgwood's rosso ant-leo and black basalt stoneware and was often decorated.
      • One of the leading glass makers of the early 19th century classical revival in Bohemia was Count Von Buquoy, who, in 1817, successfully produced an opaque black glass that resembled Josiah Wedgwood's black basalt stoneware.
      • The fine-grained basalt stoneware reflected Wedgwood's Neoclassicism.
      • Wedgwood's basalt, a hard, black, stone-like material known also as Egyptian ware or basaltes ware, was used for vases, candlesticks, and realistic busts of historical figures.

Derivatives

  • basaltic

  • adjective bəˈsɔːltɪkbəˈsɔltɪk
    • It is a fault line where a basaltic oceanic plate grinds against a continental plate and dives into the hot core of the earth - a subduction zone.
      Example sentencesExamples
      • To the east was the thin crust of soil that covered the great basaltic flows of the Great Basin.
      • Also of interest in the area is a basaltic column by the sea near Owenga.
      • I thought the barrenness was because of basaltic and granite rocks, and the greenery was due to rich soil after Ghodgaon.
      • It consists of a type of basaltic rock favourable to the growth of almond trees.

Origin

Early 17th century (in the Latin form): from Latin basaltes (variant of basanites), from Greek basanitēs, from basanos 'touchstone'.

 
 

Definition of basalt in US English:

basalt

nounbəˈsôltbəˈsɔlt
  • 1A dark, fine-grained volcanic rock that sometimes displays a columnar structure. It is typically composed largely of plagioclase with pyroxene and olivine.

    Example sentencesExamples
    • At ground level, a bistro and book shop have been elbowed aside to create a senselessly spacious foyer, floored in black basalt.
    • In this interpretation, the Basic Complex consists of basalts, pillowed in places, and derived volcaniclastic rock together with background mudrock.
    • On one face of the stone, a tablet of extremely hard black basalt, there is a long trilingual inscription; the three texts begin written one above other.
    • Calcite is one of the frequently occurring minerals in cavities within the basalts of the Deccan trap rocks of Maharashtra State, India.
    • Instead there was just a headstone of black basalt.
    • With walls of black basalt and ice rising 300 metres on each side of the narrow channel, this impression - of cruising through a high mountain valley - is not far from the truth.
    • It seems unlikely that the final magma pressure would have been the maximum value of magma pressure reached during the intrusive episode, and so flood basalts probably were erupted.
    • Further up section the geology is dominated by a succession of unmetamorphosed but strongly fractured and veined blocky andesites, basalts and tuffaceous rocks.
    • Further, it is a common vesicle-filling mineral in basalts.
    • When wet, the basalt changes colour from silvery grey to gleaming black.
    • Thick sequences of basalts form the Morgedal and Gjuve formations and include series of sub-aerial lava flows.
    • There are rare dykes with compositions similar to ocean-island basalts.
    • These are invariably volcanic rocks, including rhyolites, andesites, basalts, and their explosive equivalents, pyroclastic rocks.
    • The Zeederbergs basalts are dominantly tholeiitic and compositionally akin to continental flood basalts.
    • Gjuve basalts are generally more primitive and have a greater range of major element compositions than the Morgedal basalts.
    • This implies that individual primitive magmas are more likely to represent the composition of their individual mantle sources than more fractionated basalts.
    • Further east is Diyarbakir, a sultry place, where groups of Kurds lurk on the street corners and the black basalt of the walls and the cobbles fill the alleys with its funereal tones.
    • Oceanic sediments on top of the basalts crop out on the northern margin of the ophiolite.
    • Some areas of this lava formation are highly mineralized, whereas other equally large areas are hard, solid black basalt without any minerals.
    • Some are made up of dense, black, homogeneous basalt, with no visible mineral grains.
    1. 1.1 A kind of black stoneware resembling basalt.
      Example sentencesExamples
      • If was used to imitate Josiah Wedgwood's rosso ant-leo and black basalt stoneware and was often decorated.
      • Wedgwood's basalt, a hard, black, stone-like material known also as Egyptian ware or basaltes ware, was used for vases, candlesticks, and realistic busts of historical figures.
      • One of the leading glass makers of the early 19th century classical revival in Bohemia was Count Von Buquoy, who, in 1817, successfully produced an opaque black glass that resembled Josiah Wedgwood's black basalt stoneware.
      • The fine-grained basalt stoneware reflected Wedgwood's Neoclassicism.

Origin

Early 17th century (in the Latin form): from Latin basaltes (variant of basanites), from Greek basanitēs, from basanos ‘touchstone’.

 
 
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更新时间:2024/9/21 20:37:28