A quantitative approach to trace element and Sr isotope evolution in the Adamello batholith (northern Italy)

1986 ◽  
Vol 94 (1) ◽  
pp. 46-53 ◽  
Author(s):  
Giulio Bigazzi ◽  
Aldo Del Moro ◽  
Patrizia Macera
Keyword(s):  
Trace Element ◽  
Northern Italy ◽  
Quantitative Approach ◽  
Sr Isotope

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

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

The amphibolites in the ivreaverbano zone Northern Italy): A trace element and isotopic study

1998 ◽  
Vol 43 (S1) ◽  
pp. 85-85
Author(s):  
Lu Meihua ◽  
Rolf Schmid ◽  
Maurizio Mazzucchelli ◽  
Albrecht W. Hofmann
Keyword(s):  
Trace Element ◽  
Northern Italy ◽  
Isotopic Study

Nature des sources des composants andesitiques des Gres du Champsaur et des Gres de Taveyannaz; implications dans l'evolution des Alpes occidentales au Paleogene

2001 ◽  
Vol 172 (4) ◽  
pp. 487-501 ◽  
Author(s):  
Maud Boyet ◽  
Henriette Lapierre ◽  
Marc Tardy ◽  
Delphine Bosch ◽  
Rene Maury
Keyword(s):  
Trace Element ◽  
Western Alps ◽  
Northern Italy ◽  
Calc Alkaline ◽  
Magmatic Source ◽  
Isotopic Compositions ◽  
Alpine Zone ◽  
Internal Zone ◽  
Isotopic Geochemistry

Abstract Paleogene magmatism is widespread in the western Alps and its origin is still a matter of debate. It consists of calc-alkaline and shoshonitic suites with mainly granodioritic intrusions in the Internal Zone (northern Italy), andesitic volcanism in the Delphino-Helvetic Zone (French-Swiss domain) and the Esterellite intrusions in Provence. In the External Alpine Zone, the Taveyannaz Sandstones and the Champsaur Sandstones preserve andesitic pebbles and mineral fragments dated at 32 Ma. On the basis of trace-element and isotopic geochemistry (Sr, Nd, Pb and O) of mineral separates (amphibole, pyroxene and plagioclase) and andesitic clasts, we characterise the nature of magmatic source(s) and compare the isotopic compositions of the andesites with those of well known Paleogene igneous suites.

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

Sr isotope fractionation in a karst river: case study of Krka, Croatia

2021 ◽  
Author(s):  
Sonja Lojen ◽  
Qasim Jamil ◽  
Tea Zuliani ◽  
Leja Rovan ◽  
Tjaša Kanduč ◽  
...  
Keyword(s):  
Trace Element ◽  
Isotope Fractionation ◽  
Solid Phase ◽  
Isotope Composition ◽  
Karst Water ◽  
Carbonate Precipitation ◽  
Sr Isotopes ◽  
Sr Isotope ◽  
Element Partitioning ◽  
Karst River

<p>Precipitation of calcite from water fractionates strontium (Sr) isotopes because of preferential incorporation of light (<sup>86</sup>Sr) isotopes into the solid phase, making continental carbonates one of the most <sup>88</sup>Sr depleted reservoirs. It was suggested that carbonate precipitation is the most likely process controlling <em>δ</em><sup>88/86</sup>Sr composition of karst water. Therefore, the <sup>88</sup>Sr enrichment of river water could be used for the estimation of Sr and carbonate precipitation at catchment scale.</p><p>In the present study, we report on trace element partitioning and Sr isotope fractionation between tufa and water in the groundwater fed karst river Krka (Croatia). Water and tufa along with samples of bedrock and soil as the main contributors of dissolved and particulate Sr at seven main waterfalls and cascades along a 33 km section of the river were analysed for trace element and Sr isotope composition (<em>δ</em><sup>88/86</sup>Sr).</p><p>The highest δ<sup>88/86</sup>Sr values were measured in soils and in siliciclastic rocks, while in limestone, the <em>δ</em><sup>88/86</sup>Sr values were similar to those of old tufa precipitated in the period between 96 and 141 ky BP. Recent tufa, however, was considerably depleted in <sup>88</sup>Sr. The isotope fractionation between water and recent tufa varied a lot and was inversely correlated with Mg and Sr partitioning coefficients, while correlations with precipitation rates and temperature were rather weak. The <em>δ</em><sup>88/86</sup>Sr of recent tufa was strongly correlated with the stable isotope composition of organic carbon, which indicates that apart from hydrochemical, hydraulic parameters and temperature, plants and microbial communities that knowingly stimulate the tufa formation also affect the isotope fractionation of Sr.</p>

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