Titanium stable isotopic compositions of chondrites and ancient to modern terrestrial mantle-derived lavas
Authors
Description
We report ultra-high precision 49Ti/47Ti ratios for chondrites, ancient terrestrial mantle-derived lavas ranging from 3.8 to 2.0 Ga and modern oceanic island basalts (OIBs). Our new Ti bulk silicate Earth (BSE) estimate based on chondrites is 0.052±0.006‰ heavier than the modern upper mantle sampled by normal-type mid-ocean ridge basalts (N-MORBs). The 49Ti/47Ti ratio of Earth’s upper mantle was chondritic before 3.5 Ga and evolved to a N-MORB-like composition between ~3.5-2.7 Ga. Modern OIBs record variable 49Ti/47Ti ratios ranging from chondritic to N-MORBs compositions.
How To Cite
Deng, Z., Schiller, M., Jackson, M., Millet, M., Pan, L., Nikolajsen, K., Saji, N., Huang, D., Bizzarro, M., 2023. Titanium stable isotopic compositions of chondrites and ancient to modern terrestrial mantle-derived lavas, Version 1.0. Astromaterials Data Archive. https://doi.org/10.26022/IEDA/112942 Accessed 2026-09-29.
Files
Select a file for preview.
Funding Sources
N/A
