Affiliation:
1. Institute of Geology and Geophysics, Chinese Academy of Sciences
2. Yale University
3. United States Geological Survey
Abstract
The zinc (Zn) isotopic composition (δ66Zn) of the deep ocean (>1000 m) can provide insights into the carbon cycle, the biological pump, and hydrothermal activity. However, we have an incomplete view of the temporal and spatial evolution of deep-ocean Zn isotopes. Here, we present new δ66Zn values of Fe-Mn crusts from the Pacific Ocean, which we used to reconstruct the evolution of deep-ocean δ66Zn for the Cenozoic. Our results suggest that the δ66Zn values remain stable in the deep Pacific Ocean at around ~ 0.5‰ through the Cenozoic. Our results limit the extent of change in organic zinc burial through the Cenozoic. However, given uncertainties in the global mass balance and analytical error, variations of roughly 20% in organic zinc burial are still possible.
Publisher
American Journal of Science (AJS)
Subject
General Earth and Planetary Sciences
Reference47 articles.
1. Growth limitation of a coastal diatom by low zinc ion activity;M. A. Anderson;Nature,1978
2. The determination of the isotopic composition of Cu and Zn in seawater;J. Bermin;Chemical Geology,2006
3. The Phanerozoic carbon cycle: CO2 and O2;Robert A. Berner,2004
4. Temperature controls carbon cycling and biological evolution in the ocean twilight zone;Flavia Boscolo-Galazzo;Science,2021
5. GEOTRACES IC1 (BATS) contamination-prone trace element isotopes Cd, Fe, Pb, Zn, Cu, and Mo intercalibration: GT IC1 contamination-prone trace element isotopes;Edward A. Boyle;Limnology and Oceanography: Methods,2012
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献