| Lan Dongzhao,Chen Chenghui. 2000. A preliminary study on diatoms and silicoflagellates in cores from CC Zone, the East Pacific. Acta Oceanologica Sinica, (4):107－116 |
| A preliminary study on diatoms and silicoflagellates in cores from CC Zone, the East Pacific |
| A preliminary study on diatoms and silicoflagellates in cores from CC Zone, the East Pacific |
| Received:May 27, 1998 Revised:October 25, 1999 |
| DOI： |
| Key words:Diatoms and silicoflagellates stratigraphy the Pacific |
| 中文关键词: Diatoms and silicoflagellates stratigraphy the Pacific |
| 基金项目: |
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| Abstract: |
| After analyzing the diatoms and silicoflagellates in Core 1787 of east area and Core 2437 of west area from CC Zone, the East Pacific, 31 genus and 81 species and varieties of diatom and 7 genus and 12 species of silicoflagellates are identified.There are 8 diatom canes in Core 1787 and 1 diatom zone in Core 2437.According to the characteristics of diatom zones and the occurring and extinct ages of some diatom and silicoflagellate species, the strata since Oligocene in the region are subdivided.Lastly,combined with the data of radiolarians and paleomagnetism,some problems for Core 1787 are discussed, including where is the lower boundary of Quaternary, whether Pliocene is absent or not and whether Oligocene is present or not. |
| 中文摘要: |
| After analyzing the diatoms and silicoflagellates in Core 1787 of east area and Core 2437 of west area from CC Zone, the East Pacific, 31 genus and 81 species and varieties of diatom and 7 genus and 12 species of silicoflagellates are identified.There are 8 diatom canes in Core 1787 and 1 diatom zone in Core 2437.According to the characteristics of diatom zones and the occurring and extinct ages of some diatom and silicoflagellate species, the strata since Oligocene in the region are subdivided.Lastly,combined with the data of radiolarians and paleomagnetism,some problems for Core 1787 are discussed, including where is the lower boundary of Quaternary, whether Pliocene is absent or not and whether Oligocene is present or not. |
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