What question did this study set out to answer?

Determine the structural state and coordination environment of strontium incorporated within scleractinian coral skeletal aragonite.

March 7, 1997Science

Strontianite in Coral Skeletal Aragonite

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Authors

RGR.B. GreegorUniversity of Wyoming NPNicholas E. PingitoreThe University of Texas at El Paso FLFarrel W. LytleBoeing (United States)

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Implication

Spectroscopic study reveals strontianite precipitation in scleractinian coral skeletons, highlighting unexpected complexity in strontium-based paleothermometry proxies.

Key Points

Determine the structural state and coordination environment of strontium incorporated within scleractinian coral skeletal aragonite.
Analyzed scleractinian coral skeletons containing approximately 7500 parts per million of strontium using X-ray absorption spectroscopy.
Characterized atomic coordination environments via Fourier transform analysis of extended X-ray absorption fine structure (EXAFS) spectra.
Up to 40 percent of skeletal strontium resided in a distinct strontianite (SrCO3) phase rather than strictly substituting for calcium within aragonite.
EXAFS Fourier transform spectra resolved a doublet peak corresponding to coordination shells at ~4.05 angstroms in strontium-substituted aragonite and ~4.21 angstroms in strontianite.

Cite This Study

Greegor et al. (1997) studied this question.

synapsesocial.com/papers/6a7aaff5e357fbdac589a069 https://doi.org/10.1126/science.275.5305.1452

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Implication

Spectroscopic study reveals strontianite precipitation in scleractinian coral skeletons, highlighting unexpected complexity in strontium-based paleothermometry proxies.

Strontianite in Coral Skeletal Aragonite

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Implication

Key Points

Cite This Study

Strontianite in Coral Skeletal Aragonite

Discussion

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Implication

Key Points

Cite This Study

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