| Relationship between Earth-Sun-Moon 1000 Ma ago： Evidence from the stromatolites |
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| 作者姓名： | QU Yuangao XIE Guwei & GONG Yiming . Faculty of Earth Sciences China University of Geosciences Wuhan China . Nanjing Institute of Geology and Paleontology Chinese Academy of Sciences Nanjing China |
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| 作者单位： | QU Yuangao1,XIE Guwei1,2 & GONG Yiming1 1. Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,China; 2. Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing 210008,China |
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| 摘 要： | Stromatolitesareusuallyinterpretedastheorgano-sedimentarystructurescausedbythegrowthandmetabo-lismofmicro-organisms,principallycyanobacteriaandprecipitatedmineralgrainstrappedtothestickylay-ers1—5].Asthesunlightisstrongindaytime,thealgaefila-mentsshowstrongactivityinphotosynthesisandgrowtowardsunlight.Ontheotherhand,asthesunlightisweakatnight,thealgaefilamentsshowinactivityinphotosyn-thesisandgrowhorizontally.Duringthecourseofgrowth,thealgaewillproducesomeglutinoussecretionwhichcancatchsedim…
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| 关 键 词： | 叠层石 中元生代 古天文学 周口店市 叠层学 地球 太阳 月亮 |
| 收稿时间： | 2004-03-08 |
| 修稿时间： | 2004-05-28 |
Relationship between Earth-Sun-Moon 1000 Ma ago: Evidence from the stromatolites |
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| QU Yuangao,XIE Guwei, & GONG Yiming . Faculty of Earth Sciences,China University of Geosciences,Wuhan ,China, . Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing ,China.Relationship between Earth-Sun-Moon 1000 Ma ago: Evidence from the stromatolites[J].Chinese Science Bulletin,2004,49(21):2288-2295. |
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| Authors: | Email author" target="_blank">Qu?YuangaoEmail author Xie?Guwei Gong?Yiming |
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| Institution: | (1) Faculty of Earth Sciences, China University of Geosciences, 430074 Wuhan, China;(2) Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, 210008 Nanjing, China |
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| Abstract: | The studies on stromatolites occurring in the Mesoproterozoic Tieling Formation, Zhoukoudian, Beijing indicate that the thickness
of bright-dark lamina pairs in the stromatolites shows periodic variations, which are interpreted as monthly and seasonal
rhythms. On the basis of the S-shaped stromatolites, some preliminary paleo-astronomic parameters have been obtained as follows:
In the late Mesoproterozoic (1000 Ma ago) there were at least 516±20 d, 12.9 ±0.5 months per year, 40 d per month and at most
16.99 ± 0.66 h per day, and paleo-obliquity of the ecliptic was 29.2°-30.6°. |
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| Keywords: | stromatolites Tieling Formation Mesoproterozoic Pa- leo-astronomy Zhoukoudian |
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