頁籤選單縮合
題名 | Extraterrestrial Influence on the Evolution of the Early Earth:外來因素對早期地球演化的影響 |
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作者 | 郭新; Kwok, Sun; |
期刊 | 臺北天文館學報 |
出版日期 | 20071200 |
卷期 | 5 2007.12[民96.12] |
頁次 | 頁1-6 |
分類號 | 324 |
語文 | eng |
關鍵詞 | 地球; 演化; |
英文摘要 | After the formation of the solid Earth through accretion 4.6 billion years ago, the atmosphere and oceans of Earth have undergone significant alterations as the result of impacts by comets and asteroids during the heavy bombardment period. Isotopic and chemical analysis of meteorites, interplanetary dust particles, and even comets have now indicated a strong stellar-solar system connection and there is evidence that stellar-synthesized inorganic and organic compounds have been delivered to the solar system. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。