NON-CHONDRITIC YTTRIUM HOLMIUM RATIO AND LANTHANIDE TETRAD EFFECT OBSERVED IN PRE-CENOZOIC LIMESTONES

被引:113
作者
KAWABE, I
KITAHARA, Y
NAITO, K
机构
[1] Department of Earth Sciences, Ehime University, Matsuyama 790
关键词
D O I
10.2343/geochemj.25.31
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
REE and Y in limestones have been determined by ICP-AES method coupled with pre-concentration chemical procedures. The lanthanide tetrad effect has been clearly observed in the REE patterns of two Permian limestones. It is the W-type tetrad effect seen in seawaters. Y/Ho ratios for the limestones show large positive deviations from the chondritic ratio. Similar non-chondritic Y/Ho ratios are seen in a Precambrian limestone from South Africa, seawaters, and marine phosphorites. Their REE patterns are well characterized by the W-type tetrad effect. These facts and recent results of aquatic geochemistry of REE and Y strongly suggest that the positive Y anomalies are intimately associated with the W-type tetrad effect of REE in natural aquatic solutions including seawaters and in some hydrogenous deposits from the solutions. Y is not a pseudo lanthanide that behaves like Ho in natural conditions where the lanthanide tetrad effect is operative. This must be a thermochemical effect related to the absence of 4f electron in Y3+ and the systematic differences in 4f electronic configurations in the REE3+ series. The REE plus Y patterns with positive Y anomalies and the W-type tetrad effect are important for the geochemical studies of limestones and other hydrogeneous deposits.
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页码:31 / 44
页数:14
相关论文
共 28 条
[1]   ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].
ANDERS, E ;
GREVESSE, N .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (01) :197-214
[2]  
DAIDOJI H, 1985, BUNSEKI KAGAKU, V34, P340
[3]   RARE-EARTH DISTRIBUTIONS WITH A POSITIVE CE ANOMALY IN THE WESTERN NORTH-ATLANTIC OCEAN [J].
DEBAAR, HJW ;
BACON, MP ;
BREWER, PG .
NATURE, 1983, 301 (5898) :324-327
[4]   RARE-EARTH ELEMENTS IN THE PACIFIC AND ATLANTIC OCEANS [J].
DEBAAR, HJW ;
BACON, MP ;
BREWER, PG ;
BRULAND, KW .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1985, 49 (09) :1943-1959
[5]   ANOMALIES IN RARE-EARTH DISTRIBUTIONS IN SEAWATER - GD AND TB [J].
DEBAAR, HJW ;
BREWER, PG ;
BACON, MP .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1985, 49 (09) :1961-1969
[6]   THE RARE-EARTH ELEMENTS IN RIVERS, ESTUARIES, AND COASTAL SEAS AND THEIR SIGNIFICANCE TO THE COMPOSITION OF OCEAN WATERS [J].
ELDERFIELD, H ;
UPSTILLGODDARD, R ;
SHOLKOVITZ, ER .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1990, 54 (04) :971-991
[7]   RARE-EARTH DISTRIBUTIONS IN MARINE ENVIRONMENT [J].
GOLDBERG, ED ;
SMITH, RH ;
KOIDE, M ;
SCHMITT, RA .
JOURNAL OF GEOPHYSICAL RESEARCH, 1963, 68 (14) :4209-+
[8]   THE NORTH-AMERICAN SHALE COMPOSITE - ITS COMPILATION, MAJOR AND TRACE-ELEMENT CHARACTERISTICS [J].
GROMET, LP ;
DYMEK, RF ;
HASKIN, LA ;
KOROTEV, RL .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1984, 48 (12) :2469-2482
[9]  
Haskin L.A., 1966, PHYS CHEM EARTH, V7, P167, DOI [10.1016/0079-1946(66)90004-8, DOI 10.1016/0079-1946(66)90004-8]
[10]   RARE EARTHS IN SEDIMENTS [J].
HASKIN, LA ;
WILDEMAN, TR ;
FREY, FA ;
COLLINS, KA ;
KEEDY, CR ;
HASKIN, MA .
JOURNAL OF GEOPHYSICAL RESEARCH, 1966, 71 (24) :6091-+