なぜ珪藻殻のアルミニウムが問題なのか

抄録

The elemental composition of diatom frustules has not been treated as an intensive object of scientific research and it has been lain aside without being fully understood. In this commentary paper some observed evidences are shown for the presence of aluminum at a sub % level. The presence of aluminum in frustules at a certain amount directly indicates that diatoms incorporate some elements from terrigenous particles. It is argued that the presence of aluminum in diatom frustules can be relevant to some outstanding problems, which include a problem of the glacial-interglacial cycles.