Observation of ferromanganese deposits in the Baltic Sea
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Baltic sediments have been studied by Behrens, Munthe, Küppers, Spethmann, Apstein, Sjöstedt, Pratje and the writer. The following types of sediments have been observed: varved...
波罗的海沉积物（Baltic sediments）已由Behrens、Munthe、Küppers、Spethmann、Apstein、Sjöstedt、Pratje以及本文作者开展过研究。目前已观测到以下类型的沉积物：纹层状沉积物（varved）……
