Rare earths and other trace elements in iron-manganese concretions from a catenary sequence of yellow-grey earth soils, New Zealand
作者:
P.C. Rankin,
C.W. Childs,
期刊:
New Zealand Journal of Geology and Geophysics
(Taylor Available online 1987)
卷期:
Volume 30,
issue 2
页码: 199-202
ISSN:0028-8306
年代: 1987
DOI:10.1080/00288306.1987.10422185
出版商: Taylor & Francis Group
关键词: iron-manganese concretions;soil catena;yellow-grey earths;Otokia soils;rare earth elements;trace elements
数据来源: Taylor
摘要:
Analyses of samples of iron-manganese concretions and their surrounding soil materials, from a catenary sequence of four yellowgrey earth soils (two Fragiaquepts and two Fragiochrepts) near Allanton, have been carried out using spark source mass spectrometry. Data are presented for 12 rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Yb) and 5 others (U, Th, Pb, Cs, and As). The rare earth elements show little or no enrichment in the concretions relative to the surrounding soil and this is consistent with a relatively low degree of enrichment of Mn in the concretions. As, Pb, and Th are enriched in all samples of concretions.
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