Barium Isotopes Drivers, Dependencies, and Distributions through Space and Time

About this book

In the modern marine environment, barium isotope (δ¹³⁸Ba) variations are primarily driven by barite cycling – barite incorporates 'light' Ba isotopes from solution, rendering the residual Ba reservoir enriched in 'heavy' Ba isotopes by a complementary amount. Since the processes of barite precipitation and dissolution are vertically segregated and spatially heterogeneous, barite cycling drives systematic variations in the barium isotope composition of seawater and sediments. This Element examines these variations; evaluates their global, regional, local, and geological controls; and, explores how δ¹³⁸Ba can be exploited to constrain the origin of enigmatic sedimentary sulfates and to study marine biogeochemistry over Earth's history.

Contents

1. Introduction
2. Underpinnings
3. Materials and Methods
4. Case Studies
5. Future Prospects
6. Key Papers

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