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Now showing items 261-264 of 264
Coral biomineralization, climate proxies and the sensitivity of coral reefs to CO₂-driven climate
(Massachusetts Institute of Technology, 2017)
Scleractinian corals extract calcium (Ca²⁺) and carbonate (CO₃²⁻) ions from seawater to construct their calcium carbonate (CaCO₃) skeletons. Key to the coral biomineralization process is the active elevation of the CO₃²⁻ ...
The marine biogeochemistry of chromium isotopes
(Massachusetts Institute of Technology, 2018)
In the ocean, chromium (Cr) is a redox-sensitive trace metal. The reduction of Cr(VI) to Cr(III) occurs in oxygen deficient zones (ODZs), and Cr reduction in general has been identified as a significant Cr isotope fractionation ...
Lithospheric dynamics of Earth's subduction zones and Martian tectonic provinces
(Massachusetts Institute of Technology, 2015)
This thesis investigates lithospheric dynamics of Earth's subduction zones and Martian tectonic provinces on multiple time scales ranging from short-term earthquake deformation to long-term tectonic loading. In Chapter 2, ...
A study of the remineralization of organic carbon in nearshore sediments using carbon isotopes
(Massachusetts Institute of Technology, 1986)
A study of the remineralization of organic carbon was conducted in the organic-rich sediments of Buzzards Bay, MA. Major processes affecting the carbon chemistry in sediments are reflected by changes in the stable carbon ...