论文部分内容阅读
地质,即地壳的成分和结构。根据生物的发展和地层形成的顺序,按地壳的发展历史划分的若干自然阶段,叫做地质年代。“宙”、“代”、“纪”、“世”分指地质年代分期的第一级、第二级、第三级、第四级。地质年代分期的第一级是宙,分为太古宙、元古宙和显生宙。太古宙时,下一级只有代;元古宙时代下划分出了纪;到显生宙,在纪下又细划出了世。本刊将按照太古宙元古宙显生宙(古生代、中生代、新生代)的顺序进行连载解释。
Geology, the composition and structure of the crust. According to the biological development and stratigraphic order, according to the development history of the crust of a number of natural stages, called the geological era. “Universe ”, “generation ”, “discipline ”, “world ” refers to the first stage, second stage, third stage, fourth stage of geologic age staging. The first stage of geological staging is the universe, divided into archean, Proterozoic and Phanerozoic. Archean, the next generation only generation; Proterozoic era under the division of the discipline; to the Phanerozoic, in the discipline and fine cut out of the world. The journal will follow the Archean Phanerozoic Phanerozoic (Paleozoic, Mesozoic, Cenozoic) sequential interpretation.