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首页> 外文期刊>Doklady Earth Sciences >First Data about the Geochemistry and Geological Structure of Underwater Seamounts between Ascension and Bode Verde Transform Fracture Zones in the Brazilian Basin (South Atlantic)
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First Data about the Geochemistry and Geological Structure of Underwater Seamounts between Ascension and Bode Verde Transform Fracture Zones in the Brazilian Basin (South Atlantic)

机译:关于巴西盆地(南大西洋)上扬与波特德变换断裂带之间的水下海山的地球化学和地质结构的初步数据

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摘要

The origin of large linear structures in the oceanic crust is one of the pressing problems in marine geology. During the 32nd cruise of RV Akademik Ioffe (2010), geological works were carried out at the Brazil Basin-Mid Atlantic Ridge (MAR) boundary between the passive parts of the Ascension and Bode Verde transform fracture zones in the zone of Middle-Late Eocene age of the oceanic crust (16-18 magnetic anomalies [1]). On the bathymetric structural scheme [2] (Fig. 1), a northwest trending linear chain of nine seamounts with a total length of ~460 km is shown. During field works, the two highest seamounts in the northern part of the chain were investigated.
机译:海洋地壳中大型线性结构的起源是海洋地质学中的紧迫问题之一。在RV Akademik Ioffe(2010)的第32趟航行中,在中晚始新世的上生被动区和Bode Verde转换断裂带之间的巴西盆地-大西洋中脊(MAR)边界进行了地质工作地壳年龄(16-18磁异常[1])。在测深结构方案中[2](图1),显示了一个由9个海山组成的西北趋势线性链,总长约460 km。在野外工作期间,对链条北部的两个最高海山进行了调查。

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    《Doklady Earth Sciences》 |2012年第1期|p.56-62|共7页
  • 作者单位

    Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017 Russia;

    Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017 Russia;

    Shirshov Institute of Oceanology, Russian Academy of Science, Nakhimovskii pr. 36, Moscow, 117218 Russia;

    Shirshov Institute of Oceanology, Russian Academy of Science, Nakhimovskii pr. 36, Moscow, 117218 Russia;

    Shirshov Institute of Oceanology, Russian Academy of Science, Nakhimovskii pr. 36, Moscow, 117218 Russia;

    Shirshov Institute of Oceanology, Russian Academy of Science, Nakhimovskii pr. 36, Moscow, 117218 Russia;

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