Geology. A plane or level of stratification assumed to have been once horizontal and continuous; a stratum or set of strata characterized by a…
| 单词 | θ4755 |
| 释义 | the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > stratum by constitution > organic remains or fossils > horizon or assise (3) horizon1856 Geology. A plane or level of stratification assumed to have been once horizontal and continuous; a stratum or set of strata characterized by a… assise1882 A geological formation consisting of parallel beds of rock agreeing in their organic remains. index horizon1956 a horizon distinguished by certain groups of fossils found within it, or other characteristics which make it an indicator of a particular… |
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