proterozoic era meaning in English
元古代
Examples
- The progeny of vocahic spurting injinningian is studied through isotopic era , which belonys to the morning of new proterozoic era
经同位素年龄研究属晋宁期火山喷发产物，时代归属为新元古代早期。 - Four tectonic evolution phases have been made out in this area . they are original crust formed in the archean - early proterozoic era , continental crust shearing in the middle - new proterozoic era , plate tectonic developed in sinian - triassic period and intracontinental orogeny in the middle cenozoic period
将区内构造演化归纳为太古?早元古代原始地壳形成、中新元古代大陆地壳裂解、震旦?三叠纪板块构造体制、中新生代陆内造山等四个演化阶段。