Geochemical types of pacific polymetallic nodules: An application of multivariate analysis
作者:
L. Gromoll,
期刊:
Marine Georesources & Geotechnology
(Taylor Available online 1996)
卷期:
Volume 14,
issue 4
页码: 361-379
ISSN:1064-119X
年代: 1996
DOI:10.1080/10641199609388323
出版商: Taylor & Francis Group
关键词: chemical composition;cluster analysis;factor analysis;manganese nodules;multivariate analysis;Pacific Ocean;polymetallic nodules
数据来源: Taylor
摘要:
A total of 843 samples of Pacific Ocean polymetallic nodules (PNs) from five survey areas have been studied (metals analyzed: Mn, Fe, Ni, Cu, Co, Zn, Pb). The statistical analysis included the following techniques: factor R analysis, quick cluster Q analysis into 50 preclasses, various hierarchical cluster Q analyses (HCAs) using the preclasses (application of different HCAs to an identical set of data and of an identical HCA to two different subsets of the data), comparison of the HCA. The PNs of the survey areas can be grouped into five geochemical types (I‐V). The genesis of the PNs was interpreted as early diagenetic, hydrogenetic, and mixed (early diagenetic/hydrogenetic and hydrogenetic/hydrothermal. In addition, some further conclusions regarding the applicability of various HCA techniques depending on the structure of the data set have been drawn.
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