scholarly journals Genetic relationship between post-caldera and caldera-forming magmas from Aso volcano, SW Japan: Constraints from Sr isotope and trace element compositions

2011 ◽  
Vol 106 (2) ◽  
pp. 114-119 ◽  
Author(s):  
Masaya MIYOSHI ◽  
Tomoyuki SHIBATA ◽  
Masako YOSHIKAWA ◽  
Takashi SANO ◽  
Taro SHINMURA ◽  
...  
Keyword(s):  
Trace Element ◽  
Genetic Relationship ◽  
Sr Isotope ◽  
Aso Volcano ◽  
Sw Japan

Carbonatite-Like Rock in a Dike of the Aikhal Kimberlite Pipe: Comparison with Carbonatites of the Nomokhtookh Site (Anabar Area)

2021 ◽  
Vol 62 (6) ◽  
pp. 605-618
Author(s):  
S.I. Kostrovitsky ◽  
D.A. Yakovlev ◽  
L.F. Suvorova ◽  
E.I. Demonterova
Keyword(s):  
Trace Element ◽  
Genetic Relationship ◽  
Kimberlite Pipe ◽  
Sr Isotope ◽  
Accessory Minerals ◽  
Fine Grained ◽  
Incompatible Elements ◽  
Open Issue ◽  
Carbonate Composition ◽  
Kimberlite Field

Abstract ––A dike of rock similar in composition to carbonatites has been found in the Aikhal diamondiferous pipe of the Alakit–Markha field of the Yakutian kimberlite province (YaKP). The fine-grained rock of essentially carbonate composition (dolomite and calcite) rich in thin-platy phlogopite contains minerals typical of carbonatites: monazite, baddeleyite, and pyrochlore. In the high contents and distribution of incompatible elements the rock differs significantly from kimberlites and is transitional from kimberlites to carbonatites. The content of incompatible elements in this rock is 3–5 times lower than that in carbonatite breccias of the pipes in the Staraya Rechka kimberlite field of the YaKP (Nomokhtookh site). The compositions of accessory trace element minerals from the Aikhal dike rock and the Nomokhtookh carbonatite breccias are compared. An assumption is made that the high contents of incompatible elements in the carbonatite-like rock, which caused the crystallization of accessory minerals, are due to the differentiation of kimberlite melt/fluid. The high Sr isotope ratios indicate that the rock altered during hydrothermal and metasomatic processes. The obtained data on the composition of the carbonatite-like rock cannot serve as an argument for the genetic relationship between the Aikhal kimberlites and typical carbonatites. The genetic relationship between kimberlites and carbonatites in the northern fields of the YaKP remains an open issue.

Trace element and Nd–Sr isotope constraints on origin of the Chifeng flood basalts, North China

1999 ◽  
Vol 155 (3-4) ◽  
pp. 187-199 ◽  
Author(s):  
Bao-fu Han ◽  
Shi-guang Wang ◽  
Hiroo Kagami
Keyword(s):  
Trace Element ◽  
North China ◽  
Sr Isotope ◽  
Flood Basalts

scholarly journals Amphibole–melt disequilibrium in silicic melt of the Aso-4 caldera-forming eruption at Aso Volcano, SW Japan

2018 ◽  
Vol 70 (1) ◽  
Author(s):  
Hidemi Ishibashi ◽  
Yukiko Suwa ◽  
Masaya Miyoshi ◽  
Atsushi Yasuda ◽  
Natsumi Hokanishi
Keyword(s):  
Aso Volcano ◽  
Sw Japan

Major, trace element, and Sr isotope geochemistry of surface and ground waters in the Chiavenna Valley (Sondrio, Northern Italy)

2014 ◽  
Vol 30 ◽  
pp. 62-65 ◽  
Author(s):  
Laura Pinarelli ◽  
Barabara Nisi ◽  
Orlando Vaselli ◽  
Angelo Minissale ◽  
Antonella Buccianti ◽  
...  
Keyword(s):  
Trace Element ◽  
Isotope Geochemistry ◽  
Northern Italy ◽  
Sr Isotope ◽  
Ground Waters
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