Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda

George W.A. Nyakairu; Christian Köberl

Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda

George W.A. Nyakairu
, Christian Köberl

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

We analyzed the mineralogical and chemical (including rare earth element [REE]) composition of the >63, 32-63, and 63 œm fraction is enriched in SiO2 when compared to average Upper Continental Crust (UCC). The trace element contents of the 63 œm fraction shows lower contents. The chondrite-normalized REE distribution patterns are remarkably similar for all grain size fractions, with a general enrichment of the LREEs and a negative Eu anomaly. The >63 œm fractions have the lowest REE abundances, no LREE-HREE fractionation, but show a small negative Eu anomaly. The 63 œm fraction. The Eu/Eu*, Th/Sc, and Rb/Sr ratios of the

Original language	English
Pages (from-to)	73-86
Number of pages	14
Journal	Chemie der Erde / Geochemistry
Volume	62
Issue number	1
Publication status	Published - 2002

Austrian Fields of Science 2012

1051 Geology, Mineralogy

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Nyakairu, G. W. A., & Köberl, C. (2002). Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda. Chemie der Erde / Geochemistry, 62(1), 73-86. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7CW6-4DPD0SJ-3&_user=464575&_coverDate=01%2F01%2F2002&_rdoc=3&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%2318098%232002%23999379998%23526633%23FLP%23display%23Volume)&_cdi=18098&_sort=d&_docanchor=&view=c&_ct=3&_acct=C000022258&_version=1&_urlVersion=0&_userid=464575&md5=ea6533001e1f247ed44e53bb230560cd

@article{490f833ca58d4b21ae9d24ebe4dd6586,

title = "Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda",

abstract = "We analyzed the mineralogical and chemical (including rare earth element [REE]) composition of the >63, 32-63, and 63 {\oe}m fraction is enriched in SiO2 when compared to average Upper Continental Crust (UCC). The trace element contents of the 63 {\oe}m fraction shows lower contents. The chondrite-normalized REE distribution patterns are remarkably similar for all grain size fractions, with a general enrichment of the LREEs and a negative Eu anomaly. The >63 {\oe}m fractions have the lowest REE abundances, no LREE-HREE fractionation, but show a small negative Eu anomaly. The 63 {\oe}m fraction. The Eu/Eu*, Th/Sc, and Rb/Sr ratios of the",

author = "Nyakairu, \{George W.A.\} and Christian K{\"o}berl",

note = "Zeitschrift: Chemie der Erde Affiliations: Institute of Geochemistry, University of Vienna, Althanstrasse 14, Vienna A-1090, Austria Adressen: Koeberl, C.; Institute of Geochemistry; University of Vienna; Althanstrasse 14 Vienna A-1090, Austria; email: [email protected] Source-File: EarthScienceScopus\_iso.csv Import aus Scopus: 2-s2.0-0036096508 Importdatum: 27.11.2006 19:27:44 30.10.2007: Datenanforderung 1951 (Import Sachbearbeiter) 09.02.2010: Datenanforderung UNIVIS-DATEN-DAT.RA-2 (Import Sachbearbeiter)",

year = "2002",

language = "English",

volume = "62",

pages = "73--86",

journal = "Chemie der Erde / Geochemistry",

issn = "0009-2819",

publisher = "ELSEVIER GMBH, URBAN \& FISCHER VERLAG",

number = "1",

}

Nyakairu, GWA & Köberl, C 2002, 'Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda', Chemie der Erde / Geochemistry, vol. 62, no. 1, pp. 73-86. <http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7CW6-4DPD0SJ-3&_user=464575&_coverDate=01%2F01%2F2002&_rdoc=3&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%2318098%232002%23999379998%23526633%23FLP%23display%23Volume)&_cdi=18098&_sort=d&_docanchor=&view=c&_ct=3&_acct=C000022258&_version=1&_urlVersion=0&_userid=464575&md5=ea6533001e1f247ed44e53bb230560cd>

TY - JOUR

T1 - Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda

AU - Nyakairu, George W.A.

AU - Köberl, Christian

N1 - Zeitschrift: Chemie der Erde Affiliations: Institute of Geochemistry, University of Vienna, Althanstrasse 14, Vienna A-1090, Austria Adressen: Koeberl, C.; Institute of Geochemistry; University of Vienna; Althanstrasse 14 Vienna A-1090, Austria; email: [email protected] Source-File: EarthScienceScopus_iso.csv Import aus Scopus: 2-s2.0-0036096508 Importdatum: 27.11.2006 19:27:44 30.10.2007: Datenanforderung 1951 (Import Sachbearbeiter) 09.02.2010: Datenanforderung UNIVIS-DATEN-DAT.RA-2 (Import Sachbearbeiter)

PY - 2002

Y1 - 2002

N2 - We analyzed the mineralogical and chemical (including rare earth element [REE]) composition of the >63, 32-63, and 63 œm fraction is enriched in SiO2 when compared to average Upper Continental Crust (UCC). The trace element contents of the 63 œm fraction shows lower contents. The chondrite-normalized REE distribution patterns are remarkably similar for all grain size fractions, with a general enrichment of the LREEs and a negative Eu anomaly. The >63 œm fractions have the lowest REE abundances, no LREE-HREE fractionation, but show a small negative Eu anomaly. The 63 œm fraction. The Eu/Eu*, Th/Sc, and Rb/Sr ratios of the

AB - We analyzed the mineralogical and chemical (including rare earth element [REE]) composition of the >63, 32-63, and 63 œm fraction is enriched in SiO2 when compared to average Upper Continental Crust (UCC). The trace element contents of the 63 œm fraction shows lower contents. The chondrite-normalized REE distribution patterns are remarkably similar for all grain size fractions, with a general enrichment of the LREEs and a negative Eu anomaly. The >63 œm fractions have the lowest REE abundances, no LREE-HREE fractionation, but show a small negative Eu anomaly. The 63 œm fraction. The Eu/Eu*, Th/Sc, and Rb/Sr ratios of the

M3 - Article

SN - 0009-2819

VL - 62

SP - 73

EP - 86

JO - Chemie der Erde / Geochemistry

JF - Chemie der Erde / Geochemistry

IS - 1

ER -

Variation of mineral, chemical, and rare earth element composition in size fractions of clay-rich sediments from the Kajjansi and Ntawo clay deposits, central Uganda

Abstract

Austrian Fields of Science 2012

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