Depth profiles of chemical elements in pelagic clay sediments. Tanaka, S. ; Shibata, S. ; Chen, P. Y. ; Ke, C. H. ; Yeh, S. J. Abstract Publication: Geochemical Journal Pub Date: 1977 DOI: 10.2343/geochemj.11.171 Bibcode: 1977GeocJ..11..171T