…The strata are divided into kingdoms (or erathems), systems, series, stages, and substages according to the length of the geological time. These are called geological system, and the process of organizing the geology is called stratigraphy. The geological time is determined by two things: relative age and absolute age. … *Some of the terminology explanations that mention "stratigraphy" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…地層は地質時代の長さに対応して界group(またはerathem),系system,統series,階stage,亜階substageと分けている。これを地質系統といい,地質を編年することを層位学stratigraphyと名付ける。地質時代は相対年代と絶対年代の二つで決定される。… ※「stratigraphy」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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