calcium isotopes
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2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Claire J. Nelson ◽  
Andrew D. Jacobson ◽  
Gabriella D. Kitch ◽  
Tobias B. Weisenberger

AbstractZeolites are secondary tectosilicates produced during the hydrothermal alteration of basalt. The minerals serve as major sinks of calcium, which readily exchanges with calcium from surrounding groundwater. However, no studies have specifically investigated the calcium isotope geochemistry (δ44/40Ca) of zeolites. Here, we report δ44/40Ca values for zeolites from East Iceland, where the minerals form during progressive burial of the lava pile. The zeolites show a δ44/40Ca range of 1.4‰, which strongly correlates with average mineral calcium-oxygen bond lengths. As this correlation appears most consistent with equilibrium isotope partitioning, our findings point toward developing a novel geothermometer for studying low-grade basalt metamorphism. The results also have significance for using calcium isotopes to trace basalt weathering, including its role in long-term climate regulation and application in carbon capture and storage, a leading strategy for mitigating anthropogenic climate change.


2021 ◽  
Vol 256 ◽  
pp. 106843
Author(s):  
Théo Tacail ◽  
Jeremy E. Martin ◽  
Estelle Herrscher ◽  
Emmanuelle Albalat ◽  
Christine Verna ◽  
...  

2021 ◽  
Author(s):  
Katie Smart ◽  
Sebastian Tappe ◽  
Alan Woodland ◽  
Chris Harris ◽  
Nikolaus Gussone ◽  
...  

2021 ◽  
Author(s):  
Matthew Fantle ◽  
Benjamin Barnes
Keyword(s):  

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
D. Nguyen ◽  
Z. Ye ◽  
P. Aguilera ◽  
Z. Ahmed ◽  
H. Albataineh ◽  
...  

2020 ◽  
Author(s):  
Elizabeth M. Griffith ◽  
Matthew S. Fantle
Keyword(s):  

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
L. Coraggio ◽  
G. De Gregorio ◽  
A. Gargano ◽  
N. Itaco ◽  
T. Fukui ◽  
...  

2020 ◽  
Vol 102 (3) ◽  
Author(s):  
J. G. Li ◽  
B. S. Hu ◽  
Q. Wu ◽  
Y. Gao ◽  
S. J. Dai ◽  
...  

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