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The Planet Chronicles by Diatoms

... “diatomaceous” rocks form, some of which consist almost completely of diatom frustules, especially where calcium promoting dissolution of silica is in deficiency. Ancient sea diatomites, diatomaceous shales, and silts are known in many world regions, reaching several ... ... and paleomagnetic scales. R. CRAWFORD : Today diatoms are of major significance for the study of past and present environment: climate changes, cataclysmic events (such as volcanic eruptions and tsunami), anthropogenic effect… It would not be possible ...

Modified: 30.08.2006
diatoms , silica , nature , Arctic , climate , tsunami
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