演化时间 meaning in English
evolutionary time
Examples
- Ordos basin is a polycyclic superposition basin that is formed in an earlier geological history and has experienced a longer evolution
鄂尔多斯盆地是一个多旋回叠合型盆地，其形成历史早、演化时间长。 - Xikuangshan type copper ore deposit named those fe - cu deposits hosted in yinmin formation , kunyang group , which located in kunyang rift valley and the edge of southwest yangzi platform . the best example is xikuangshan allotment , luoxue ore area , dongchuan , yunnan . the type deposit spread in south kunyang rift valley , include dongchuan , wuding - luoci , yuanjiang , yimen , huashengping , hongmenchang and so on
稀矿山式铜矿是指赋存在昆阳群因民组地层中的铜铁矿床，其大地构造背景属于元古代裂谷带，大陆裂谷是超大型铜等多金属矿形成和分布的有利环境，在裂谷下部常发育异常地幔和岩浆源，裂谷空间上的多层次性使矿床具有明显垂向分带特征，其演化时间的长期性、脉动性和继承性便于多期成矿作用相互叠加、矿质的高度聚集。