| 单词 | recessional moraine |
| 释义 | > as lemmasrecessional moraine recessional moraine n. Physical Geography a moraine deposited during a temporary halt or minor readvance of a receding glacier or ice sheet, similar in appearance to a terminal moraine. ΘΚΠ the world > the earth > land > landscape > high land > rising ground or eminence > [noun] > glacial mound moraine1783 osar1842 esker1852 kame1862 sow-back1874 push moraine1890 whaleback1893 recessional moraine1897 Ra1902 Salpausselkä1923 the world > the earth > structure of the earth > structural features > deposited by water, ice, or wind > [noun] > glacial > moraine moraine1783 push moraine1890 recessional moraine1897 1897*Recessional moraines [see sense A. 3]. 1925 W. J. Miller Introd. Physical Geol. viii. 255 Recessional moraines, forming a great succession of curving ridges, are wonderfully displayed to the south of Lakes Michigan and Erie. 1976 C. L. Matsch N. Amer. & Great Ice Age vii. 84 Recessional moraines are valuable aids to the glacial geologist because their spacing might allow the calculation of rates of melting if appropriate materials are available for radiocarbon dating. 1995 A. M. Cvancara Field Man. Amateur Geologist (rev. ed.) iii. 26 If the ice front recedes and restabilizes, a recessional moraine..—up-valley from the end moraine—is laid down. < as lemmas |
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