Hard siliceous rock suitable for making millstones; spec. (frequently Millstone Grit) a coarse sandstone of the British Carboniferous, lying…
单词 | θ5379 |
释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > primary or Palaeozoic > carboniferous spec. (5) millstone grit1682 Hard siliceous rock suitable for making millstones; spec. (frequently Millstone Grit) a coarse sandstone of the British Carboniferous, lying… tumbler-beds1821 plural, a local name for the loose crumbly upper portion of the carboniferous limestone. culm measures or series1836 Geology. (More fully culm measuresor series.) A name given by some geologists to a series of shales, sandstones, etc. containing, in places, thin… Mississippian1893 Geology. The Mississippian period or system of rocks (see sense B. 2). Pennsylvanian1902 Geology. With the. The Pennsylvanian period (see sense B. 2); the system of rocks dating from this time. |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。