单词 | laccolite |
释义 | laccoliten. Geology. Now rare. A mass of igneous rock, typically lens-shaped, that has been intruded between rock strata causing uplift in the shape of a dome. Now more commonly called laccolith. ΘΚΠ the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > intrusion > others laccolite1877 xenolith1894 bysmalith1898 stock1898 autolith1900 bathylite1902 phacolite1909 phacolith1910 cupola1911 lopolith1918 1877 G. K. Gilbert Rep. Geol. Henry Mts. (U.S. Geogr. & Geol. Surv. Rocky Mt. Region) ii. 19 For this body the name laccolite..will be used. 1895 J. W. Powell Canyons of Colorado 83 The lenses of volcanic rocks by which the domes were upheaved are known as ‘laccolites’, i.e., rock lakes. 1937 S. W. Wooldridge & R. S. Morgan Physical Basis Geogr. viii. 110 Laccolites are closely related in manner of origin to the stratiform intrusions of igneous rock..termed ‘sills’. 2006 B. A. Kennedy Inventing Earth vi. 85 It required a careful analysis..of the probable physical forces at work controlling the emplacement of the laccolites. This entry has been updated (OED Third Edition, March 2017; most recently modified version published online March 2022). < n.1877 |
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