Geology. A thin layer or stratum separating two strata of greater magnitude.
单词 | θ4795 |
释义 | the world > the earth > structure of the earth > structural features > thin layer > [noun] > separating strata (6) seam1592 Geology. A thin layer or stratum separating two strata of greater magnitude. lissena1641 A cleft or seam dividing the strata of a rock. parting1708 Mining and Geology. A thin layer of rock, clay, etc., between two strata of a different rock type. stripe1799 Geology. A narrow band of rock interposed between strata of differing character. slick1883 Mining. (See quot. 1883.) seamlet1891 A small seam or stratum. |
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