| 大洋钻探与地层学——高分辨率磁性生物年代地层格架 |
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| 引用本文： | 徐钰麟.大洋钻探与地层学——高分辨率磁性生物年代地层格架[J].地球科学进展,1995,10(3):258-262. |
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| 作者姓名： | 徐钰麟 |
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| 作者单位： | 中国地质大学 |
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| 摘 要： | 深海钻探计划（ＤＳＤＰ）和大洋钻探计划（ＯＤＰ）实施以来促进了地层学的发展。通过对大洋沉积物的研究，利用生物属，种的始，末现面事件建立起了晚中生代－新生代高精度的钙质超微化石，有孔虫，放射虫以及沟鞭藻的化石带，综合利用这些基准面事件，可使地层划分精度达１０万年以内。使用液压活塞取心技术，建立起了完整，连续的中，新生代磁性地层剖面，加之放射性年龄的测定，确定了数百个生物属，种始，末现面的绝对年龄值，
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| 关 键 词： | 大洋钻探 地层学 高分辨率 生物地层 生物年代 |
OCEAN DRILLING PRIGRAM AND STRATIGRAPHY:HIGH RESOLUTION MAGNETOBIOCHRONOLOGY SCHEME |
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| Xu Yulin.OCEAN DRILLING PRIGRAM AND STRATIGRAPHY:HIGH RESOLUTION MAGNETOBIOCHRONOLOGY SCHEME[J].Advance in Earth Sciences,1995,10(3):258-262. |
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| Authors: | Xu Yulin |
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| Institution: | China University of Geosciences,Beijing 100083 |
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| Abstract: | years of Ocean Drilling have advanced the stratigraphy. The Late Mesozoic toCenozoic zonation schemes of calcareous nannofossil, foraminifera , radiolaria and dinoflag-ellate were established on basis of the information gained from DSDP and ODP,and theresolution of stratigraphic division can be as high as less than 0. 1Ma using numerous ma-rine bio-datum events.New techniques such as hydraulic piston coring was applied to DSDP Leg 73 in theSouth Atlantic Ocean and yielded a tight calibration between biotratigraphy and magneticpolarity time scale. Since then , biostratigraphic datum has been correlated with magne-tostratigraphic chron for each leg of DSDP and ODP and a high resolution magneto-biochronologic schemes of Late Mesozoic and Cenozoic has been established. As a result,some theoretical topics such as origin,migration,evolution and extinction of microorganismcan be explored using data from legs located at various latitudes. |
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| Keywords: | Ocean Drilling Program High-resolution Magnetostratigraphy Magneto-biochronology |
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