Pelagic Barite: Tracer of Ocean Productivity and a Recorder of Isotopic Compositions of Seawater S, O, Sr, CA and Ba

ISBN-13: 9781108810692 / Angielski / Miękka / 2021 / 75 str.

Weiqi Yao (University of Toronto);Elizabeth Griffith (Ohio State Universit; Adina Paytan (University of California

Opis

Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may be used to infer oceanic processes. Several important tracers are incorporated into pelagic barite, an authigenic mineral that forms in the water column. Here we summarize the utility of pelagic barite for the reconstruction of export production and as a recorder of seawater S, O, Sr, Ca and Ba.

Spis treści

1. Pelagic Barite Accumulation Rates: a Proxy for Export Production; 2. Non-pelagic Marine Barite; 3. Sulfur Isotopes; 4. Oxygen Isotopes; 5. Strontium Isotopes; 6. Calcium Isotopes; 7. Barium Isotopes; 8. Future Prospects; 9. Key References; 10. Supporting References.