Explore the temporal triple oxygen isotope trend recorded in Precambrian cherts through this 34-minute conference talk presented at the Mineralogical Society of America's Short Course on Triple Oxygen Isotope Geochemistry. Delve into the formation of cherts, Archean opal A, and the use of secondary ion probes for analysis. Examine temperature-dependent fractionation, altered basalts, and measurement strategies. Analyze data collection methods, comparison diagrams, and examples of best-preserved samples. Investigate primary signatures, secondary processes, and the global compilation of charts. Discuss changing seawater composition and its generalized interpretation. Conclude with insights into the implications of this research for understanding Earth's early environment and geological processes.
Temporal Triple Oxygen Isotope Trend Recorded by Precambrian Cherts
Mineralogical Society of America via YouTube
Overview
Syllabus
Introduction
Motivation
How cherts form
Opal A
Archean
Secondary Ion Probe
Temperature dependent fractionation
Altered basalts
Measurement strategy
Data collection
Comparison diagram
Another example
Best preserved samples
Data compilation
Primary signatures
Secondary processes
Primary marine silica
Global compilation of charts
Changing seawater composition
Generalized interpretation
Conclusions
What would it suggest
Taught by
Mineralogical Society of America
