a stiff grey-blue fossiliferous Jurassic clay found in central England.
| 单词 | θ5388 |
| 释义 | the world > the earth > structure of the earth > age or period > stratigraphic units > [noun] > secondary or Mesozoic > Jurassic > specific (20) Oxford clay1812 a stiff grey-blue fossiliferous Jurassic clay found in central England. cornbrash1813 A name, originally local, for the coarse ‘brashy’ calcareous sandstone which forms the upper division of the Lower Oolite in various parts of… Kellaways1813 Used attributively to designate a group of clays and calcareous sandstones of Jurassic age lying below the Oxford clay and above the cornbrash, and… Portland oolite1814 = Portland limestone n. at sense 1f. coral-rag1816 The upper member of the Middle Oolite series, a kind of limestone, containing continuous beds of petrified corals. oolite1816 Usually with capital initial. Any of a series of such limestones and other sedimentary rocks of the Jurassic system, lying above the Lias. Oxford oolite1818 the middle division of the oolitic series in the Jurassic system of southern Britain; an oolitic limestone of this division. Kimmeridge clay1830 Kimmeridge clay n. a bed of clay in the Upper Oolite containing bituminous shales. Kimmeridge coal n. shale of the Kimmeridge clay containing so… lias1833 Geology. A series of strata forming the lower division of the Jurassic series, consisting of thin layers of blue argillaceous limestone, and… Portland sand1836 a stratum of rock underlying the Portland limestone, above the Kimmeridge clay. skull-cap1839 Geology. (See quots.) Solenhofen slate1841 a fine-grained variety of limestone, used esp. in lithographic printing, quarried in the upper beds of the Jurassic formation at Solenhofen. Stonesfield slate1855 a stratum of thin-bedded limestone and calcareous sandstone forming part of the Great Oolite series in Oxfordshire and Gloucestershire. Callovian1856 Chiefly with the. The Callovian stage or period. Tithonian1869 The Tithonian stage (see sense A.); the period of time corresponding to this stage. coralline oolite1871 Of the nature of coral; composed or consisting of coral, as coralline limestone, coralline marble, etc. coralline oolite = coral-rag, n. Lincolnshire limestone1873 a bed of oolitic limestone of Upper Jurassic (Bajocian) age, extensively developed in Lincolnshire and adjoining counties. Ampthill Clay1877 (a bed of) clay, similar to Oxford clay, deposited during the Oxfordian stage of the late Jurassic and cropping out south of the River Humber. Aalenian1882 A stage at the lowest level of the Middle Jurassic, lying next below the Bajocian; the geological age corresponding to this stage. Pliensbachian1903 A stage of the Lower Jurassic in Europe lying above the Sinemurian and below the Toarcian; the geological age during which this was deposited… |
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