| 单词 | culmination of pitch |
| 释义 | > as lemmasculmination of pitch 4. Geology (a) Also culmination of pitch. A part of a fold, esp. a nappe, where the strata were at their highest before they were eroded; (b) an axis of a system of folds joining the highest parts of successive folds. ΘΚΠ the world > the earth > structure of the earth > structural features > fold or dip > [noun] > axis of fold system culmination1927 the world > the earth > structure of the earth > structural features > fold or dip > [noun] > part of fold culmination1927 1927 L. W. Collet Struct. Alps ii. i. 27 Windows generally originate..on culminations of pitch. 1927 L. W. Collet Struct. Alps ii. i. 27 The windows of the Lower Engadine and of the Tauern are due to culminations of the substratum. 1942 M. P. Billings Struct. Geol. iii. 49 Culminations and depressions trend essentially at right angles to the trend of the folds; the folds plunge away from culminations toward depressions. 1944 A. Holmes Princ. Physical Geol. xviii. 392 The nappes..are found to undulate up and down in an alternating succession of broad culminations and depressions. 1965 Princ. Physical Geol. (ed. 2) xxx. 1157 (caption) Mt. Blanc (15,782 feet) the highest culmination of the Hercynian massifs. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIII. 408/1 In the culminations, where the higher strata have been removed by erosion, the structure of the lower strata may be seen in the deep valleys. < as lemmas |
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