| 单词 | rock cycle |
| 释义 | > as lemmasrock cycle rock cycle n. Geology an idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion. ΚΠ 1898 J. S. Diller Educ. Series Rock Specimens U.S. Geol. Surv. 88 When exposed for a considerable time to the weather, shale..is ultimately reduced to a tenacious clay,..ready to be carried away by the rains, rills, and rivers into the sea, and again deposited to initiate a new rock cycle. 1936 C. Croneis & W. C. Krumbein Down to Earth xxiv. 207 All rock processes are aspects of a great rock cycle—a scheme of evolution of the rocks which helps to clarify our ideas of unity in the inorganic world. 1998 Philos. Trans. (Royal Soc.) B. 353 41/1 The rock cycle which over long timespans is thought to control atmospheric carbon dioxide (CO2) concentrations. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。