| 太平洋中部多金属结核生物地层学研究 |
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| 引用本文： | 黄永样,段威武.太平洋中部多金属结核生物地层学研究[J].海洋地质与第四纪地质,1994(2). |
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| 作者姓名： | 黄永样 段威武 |
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| 作者单位： | 广州地质矿产部第二海洋地质调查大队，广州海洋地质调查局 |
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| 摘 要： | 本文利用钙质超微化生物地质学研究方法，分析鉴定了多金属结核中的钙质超微化石，建立了多金属结核生长层柱状剖面图，确定了多金属结核形成的三个生长阶段及其年代，为揭示多金属结核的成矿规律和分布规律提供了必要的地质资料。
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| 关 键 词： | 多金属结核，钙质超微化石，生长速率，太平洋 |
BIOSTRATIGRAPHIC STUDY OF POLYMETALLIC BODULES IN CENTRAL PACIFIC OCEAN |
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| Huang Yongyang.BIOSTRATIGRAPHIC STUDY OF POLYMETALLIC BODULES IN CENTRAL PACIFIC OCEAN[J].Marine Geology & Quaternary Geology,1994(2). |
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| Authors: | Huang Yongyang |
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| Abstract: | This paper deals with calcareous nannofossils within nine different types of poly-metallic nodules from the Central Pacific Ocean,Seven genus and nineteen species of cal-careous nannofossils have been discovered in the polymetallic nodules,The age ranges ofthe nannofossils are from Early Miocene to Quaternary.According to the angular uncon-formity and fossil assemblages within structure layers of polymetallic nodules,thegrowth history of the nodules can be divided into three stages,which are early EarlyMiocene(>18Ma),late Early Miocene to early Middle Miocene(about 15-17Ma)andPliocene to Quaternary.The growth rate of polymetallic nodules calculated with bios-tratigraphic method ranges from l to 12mm/Ma,with an average growth rate of 2.4mm/ Ma. |
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| Keywords: | polymetallic nodule calcareous nannofossil structure layer growth rat |
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