CAJ | 학술논문

针对夏明生先生认为"Ma"及其派生单位(如"m/Ma"和"℃/Ma")在地学期刊中属错误用法的观点,查阅了国家标准GB 3100-93和国际地学期刊有关规定.进而提出"Ma"和"Myr"均可表示"100万年"的观点,并指出这两个单位在国际期刊用法中的区别,即"Ma"用于表示某一地质事件距今的绝对年代(absolute dates),而"Myr"用于表示某一地质事件的延续时间或时间间隔(duration或interval).另外,还提出了Ma"和"Myr"的派生单位供大家讨论.
침대하명생선생인위"Ma"급기파생단위(여"m/Ma"화"℃/Ma")재지학기간중속착오용법적관점,사열료국가표준GB 3100-93화국제지학기간유관규정.진이제출"Ma"화"Myr"균가표시"100만년"적관점,병지출저량개단위재국제기간용법중적구별,즉"Ma"용우표시모일지질사건거금적절대년대(absolute dates),이"Myr"용우표시모일지질사건적연속시간혹시간간격(duration혹interval).령외,환제출료Ma"화"Myr"적파생단위공대가토론.
Aiming at the point of view, held by Mr. Xia Mingsheng, that in geological journals, the time unit "Ma"and its derived units such as "m/Ma" and "℃/Ma" are illegal, we referred the stipulations about this issue by the national standard GB 3100-93 and by some foreign geological journals. Based on these stipulations, we propose that both "Ma" and "Myr" can be used to express a time length of millions of years. However, there is a certain difference between them , "Ma, Mega-annum" means millions of years ago (absolute dates) while "Myr, Millions of years" means the duration of time that a geological event lasted. Therefore, the derived units of"settlement rate or accumulation rate" and "cooling rate" can be expressed by "m/Ma" and "℃/Ma" for journals of Chinese edition and "m/Myr" and "℃/Myr" for English edition, respectively.