Journal
ELEMENTS
Volume 17, Issue 6, Pages 413-418Publisher
MINERALOGICAL SOC AMER
DOI: 10.2138/gselements.17.6.413
Keywords
Continental crust; nontraditional stable isotopes; isotope geochemistry
Categories
Funding
- NSF-EAR [1946856, PF 1952809, 1949655]
- Division Of Earth Sciences
- Directorate For Geosciences [1946856, 1949655] Funding Source: National Science Foundation
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The formation of continental crust through plate tectonics greatly influences Earth's surface characteristics, with nontraditional stable isotopes providing valuable insights into the process. These isotopes have shed light on Earth's earliest continental crust and the mechanisms behind modern crustal generation.
The formation of continental crust via plate tectonics strongly influences the physical and chemical characteristics of Earth's surface and may be the key to Earth's long-term habitability. However, continental crust formation is difficult to observe directly and is even more difficult to trace through time. Nontraditional stable isotopes have yielded significant insights into this process, leading to a new view both of Earth's earliest continental crust and of what controls modern crustal generation. The stable isotope systems of titanium (Ti), zirconium (Zr), molybdenum (Mo), and thallium ( Tl) have proven invaluable. Processes such as fractional crystallization, partial melting, geodynamic setting of magma generation, and magma cooling histories are examples of processes illuminated by these isotope systems.
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