The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies

Jochum, Klaus Peter; Seufert, H.; Spettel, B.; Palme, H.

doi:10.1016/0016-7037(86)90400-x

Cited by 231 publications

(90 citation statements)

References 34 publications

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“…basalts and Ne-norm. alkali basalts of group I, the ratio of P205 / Ce = 100± 5 (Table 3) is similar to the values for the primitive mantle (Jochum et al, 1986) and for Archean basalts (Sun and Nesbitt, 1977). This ratio decreases toward nephelinite.…”

Section: Incompatible Trace Elementssupporting

confidence: 80%

“…A similar conclusion may be reached from the Th / Sc vs Th plot. The slope of this regres sion line (excluding nephelinite 27 which has a high Th / Sc ratio) leads to Do'-0.9 assuming Co° = 15.1 (Jochum et al, 1986). This high Ds' compared to Do" again implies the presence of garnet and can account for the decrease of the Sc/Yb ratio from 11 in the Hy-norm.…”

Section: Incompatible Trace Elementsmentioning

confidence: 94%

“…alkali basalts with La/ Yb < 16; 2-Ne-norm. alkali basalts with Lal Yb > 20; 3 basanites; 4-nephelinite; 5-chondritic or primitive mantle ratios obtained from chondritic values of Thompson (1982) ex cept a-Archean basalt source and Earth mantle (Sun and Nesbitt, 1977), b -primitive mantle of Jochum et al (1986), c Sun and Nesbitt (1977), and d- Sun (1988;pers. communication); 6-Mid-Atlantic ridge basalts , Th/La obtained assuming (La/Yb)N=1, n-number of samples.…”

Section: Incompatible Trace Elementsmentioning

confidence: 99%

“…DO 'b may also be approximated from the slope of this line provided Cob is known. Assuming that the source rock has a primitive mantle composition (Cob = 0.45 ppm; Jochum et al, 1986) Do b is equal to 0.28. This Do b value implies garnet in the source (at least 5%).…”

Section: Incompatible Trace Elementsmentioning

confidence: 99%

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Geochemistry and origin of Pliocene alkali basaltic lavas from Anhui-Jiangsu, eastern China.

Dostál

Dupuy²,

Zhai

et al. 1988

Geochem. J.

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The Pliocene volcanic rocks of the Anhui-Jiangsu region of eastern China are composed of an alkali basaltic suite consisting of alkali basalts, basanites and nephelinites.The basalts underwent a limited degree of fractional crystallization dominated in the initial stage by olivine and subsequently by clinopyroxene.The magmas were derived from a metasomatized amphibole-bearing garnet peridotite source variously enriched in incompatible trace elements. The metasomatic enrichment of the incompati ble trace elements was probably produced by a zone refining process and was superimposed on a depleted upper mantle source compositionally similar to that of mid-ocean ridge basalts.

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Section: Incompatible Trace Elementssupporting

confidence: 80%

Section: Incompatible Trace Elementsmentioning

confidence: 94%

Section: Incompatible Trace Elementsmentioning

confidence: 99%

Section: Incompatible Trace Elementsmentioning

confidence: 99%

See 2 more Smart Citations

Geochemistry and origin of Pliocene alkali basaltic lavas from Anhui-Jiangsu, eastern China.

Dostál

Dupuy²,

Zhai

et al. 1988

Geochem. J.

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“…Both Nb and Ta show similar geochemical behaviors due to their nearly identical ionic radii and charge (Jochum et al, 1986(Jochum et al, , 1989, so Nb/ Ta value is hardly affected by magmatic processes such as fractional crystallization and partial melting unless a significant volume of rutile and/or low-Mgnumber amphibole is involved in the mantle source (e.g., Ionov et al, 1997;Foley et al, 2000Foley et al, , 2002Tiepolo et al, 2001). Partition coefficients for rutile/ melt from both experimental and natural systems suggest that rutile is a potential phase to fractionate Nb from Ta and produce superchondritic Nb/Ta value in the melt (Foley et al, , 2002.…”

mentioning

confidence: 99%

Origin of early Cretaceous calc-alkaline lamprophyres from the Sulu orogen in eastern China: implications for enrichment processes beneath continental collisional belt

Guo

Wang

et al. 2004

Lithos

233

161

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Geochemistry of Zr, Hf, and REE in a wide spectrum of Eh and water composition: The case of Dead Sea Fault system (Israel)

Censi

Raso

Yechieli

et al. 2017

Geochem Geophys Geosyst

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Along the Jordan Valley‐Dead Sea Fault area several natural waters in springs, wells, and catchments occur. The chemical‐physical characters of the studied waters allowed for the first time the investigation of the Zr and Hf geochemical behavior, apart from REE, extended to a wide range of Eh, temperature, salinity, and pH conditions. The results of this study indicate that the dissolved Zr and Hf distribution in natural waters is strongly influenced by redox conditions since these in turn drive the deposition of Fe‐oxyhydroxides or pyrite. In oxidizing waters saturated or oversaturated in Fe‐oxyhydroxides (Group 1), superchondritic Zr/Hf values are measured. On the contrary, in waters where Eh < 0 values occur (Group 2), chondritic Zr/Hf values are found. Superchondritic Zr/Hf values are produced by the preferential Hf scavenging onto Fe‐oxyhydroxides that is inhibited under reducing conditions consistent with the water oversaturation relative to pyrite. Redox conditions also influence the amplitude of Ce and Eu anomalies. Oxidized Group‐1 waters show negative Ce anomalies related to the oxidative Ce scavenging as CeO2 onto Fe‐oxyhydroxide. Reduced Group‐2 waters show positive Eu anomaly values consistent with the larger Eu2+ concentration relative to Eu3+ in these waters suggested by model calculations. The higher stability of Eu2+ with respect to its trivalent neighbors along the REE series can explain the above mentioned positive Eu anomaly values. The middle‐REE enrichment observed in shale‐normalized REE patterns of studied waters can be ascribed to carbonate and/or gypsum dissolution.

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The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies

Cited by 231 publications

References 34 publications

Geochemistry and origin of Pliocene alkali basaltic lavas from Anhui-Jiangsu, eastern China.

Geochemistry and origin of Pliocene alkali basaltic lavas from Anhui-Jiangsu, eastern China.

Origin of early Cretaceous calc-alkaline lamprophyres from the Sulu orogen in eastern China: implications for enrichment processes beneath continental collisional belt

Geochemistry of Zr, Hf, and REE in a wide spectrum of Eh and water composition: The case of Dead Sea Fault system (Israel)

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