[HTML][HTML] Subducted carbonates not required: Deep mantle melting explains stable Ca isotopes in kimberlite magmas

MA Antonelli, A Giuliani, Z Wang, M Wang… - … et Cosmochimica Acta, 2023 - Elsevier
Ca isotope geochemistry has great potential for improving our understanding of magmatic
systems and for tracing the deep Earth carbon cycle. There are still many open questions …

Calcium isotope constraints on OIB and MORB petrogenesis: The importance of melt mixing

ZT Eriksen, SB Jacobsen - Earth and Planetary Science Letters, 2022 - Elsevier
Lithological and isotopic heterogeneity in the mantle archive the mantle's melting history and
fingerprint crustal recycling processes coupling the deep Earth with the terrestrial biosphere …

Calcium isotopic evidence for the mantle sources of carbonatites

E Amsellem, F Moynier, H Bertrand, A Bouyon… - Science …, 2020 - science.org
The origin of carbonatites—igneous rocks with more than 50% of carbonate minerals—and
whether they originate from a primary mantle source or from recycling of surface materials …

[PDF][PDF] Ca isotope systematics of carbonatites: Insights into carbonatite source and evolution

J Sun, XK Zhu, NS Belshaw… - Geochemical …, 2021 - geochemicalperspectivesletters.org
Geological reference materials including carbonatite (COQ-1), basalts (BHVO-2, BCR-2,
GSR-3), andesite (AGV-2), granite (GSP-2), seawater (IAPSO) and carbonate (NIST SRM …

Light calcium isotope anomaly observed in continental basaltic lavas: A mixed signal of recycled carbonate and fractionation during melting

Y Wang, X Meng, Y He, J Huang, WN Lu, Q Shi, S Ke… - Lithos, 2023 - Elsevier
We present high-precision Ca isotopic data for 21 Cenozoic basaltic lavas from eastern
China to evaluate the potential of Ca isotopes as a tool to trace the recycling of surface …

Magnesium isotopic fractionation during basalt differentiation as recorded by evolved magmas

XJ Wang, LH Chen, T Hanyu, Y Zhong, JH Shi… - Earth and Planetary …, 2021 - Elsevier
Magnesium isotopic fractionation during basalt differentiation is commonly thought to be
negligible at current levels of analytical precision. However, Mg isotopic variation of∼ …

Global trends in novel stable isotopes in basalts: Theory and observations

CR Soderman, O Shorttle, S Matthews… - … et Cosmochimica Acta, 2022 - Elsevier
The geochemistry of global mantle melts suggests that both mid-ocean ridge basalts
(MORB) and ocean island basalts (OIB) sample lithological and temperature heterogeneities …

Calcium isotopes in high-temperature terrestrial processes

MA Antonelli, JI Simon - Chemical Geology, 2020 - Elsevier
This chapter explores the growing body of stable and radiogenic Ca isotope measurements
in high temperature terrestrial materials and covers the emerging applications for Ca isotope …

Kinetic and equilibrium Ca isotope effects in high-T rocks and minerals

MA Antonelli, M Schiller, EA Schauble, T Mittal… - Earth and Planetary …, 2019 - Elsevier
Calcium isotope data (δ 44 Ca, μ 42/44 Ca, and μ 48/44 Ca) are reported for high-
temperature metamorphic rocks and minerals, and compared with density-functional theory …

Ca-isotopes as a robust tracer of magmatic differentiation

H Fu, SB Jacobsen, BT Larsen, ZT Eriksen - Earth and Planetary Science …, 2022 - Elsevier
The large mass difference (∼ 10%) between the two most abundant isotopes of calcium, 40
Ca and 44 Ca, gives Ca great potential in tracking mass-dependent fractionation during …