| 释义 |
Definition of fusain in English: fusainnoun ˈfjuːzeɪnˈfjuzeɪn mass nounGeology A lustreless, crumbly, porous type of coal resembling wood charcoal. Example sentencesExamples - The conglomerate is overlain by a claystone-dominated fossiliferous interval, which contains spirorbid worm tubes, abundant conchostracans, plant debris, fusain, and a pygocephalomorph-bearing limestone.
- In nearly all cases, fusain had the largest ratio of C-C bonds.
- As an independent check on the overall oxygen trend, it is notable that fusain is found for the first time in the Late Devonian.
- Forest fire, a major disturbance agent in some modern forests, does not appear to be a major factor given the rarity of fusain in the Buchanan Lake Formation deposits.
- Minor amounts of fusain also occur in association with the fossils.
Origin Late 19th century: from French, literally 'spindle tree', also 'fine charcoal' (made from the spindle tree). Definition of fusain in US English: fusainnounˈfyo͞ozānˈfjuzeɪn Geology A crumbly, porous type of coal resembling wood charcoal, used in drawing. Example sentencesExamples - As an independent check on the overall oxygen trend, it is notable that fusain is found for the first time in the Late Devonian.
- Minor amounts of fusain also occur in association with the fossils.
- The conglomerate is overlain by a claystone-dominated fossiliferous interval, which contains spirorbid worm tubes, abundant conchostracans, plant debris, fusain, and a pygocephalomorph-bearing limestone.
- Forest fire, a major disturbance agent in some modern forests, does not appear to be a major factor given the rarity of fusain in the Buchanan Lake Formation deposits.
- In nearly all cases, fusain had the largest ratio of C-C bonds.
Origin Late 19th century: from French, literally ‘spindle tree’, also ‘fine charcoal’ (made from the spindle tree). |