Science Advances
Supplementary Materials
The PDFset includes:
- Supplementary discussion on quantifying mineralogy using XRD
- Table S1. XRD peak areas for calcite 104 (Acalc) and aragonite 111 (Aarag) of calibration materials and bivalves from the CRNWR excavation site.
- Fig. S1. XRD scans of pure aragonite and calcite.
- Fig. S2. Relative peak area for aragonite and calcite relative to the molar fraction of each mineral.
- Fig. S3. Photographs of all shells analyzed in this study.
- Fig. S4. Cross plot of δ13C and δ18O values for all modern and shell midden bivalves discussed in the main text.
- Legend for data S1
Other Supplementary Material for this manuscript includes the following:
- Data S1 (Microsoft Excel format). Isotopic analyses of equilibrated gases, Cabo Rojo bivalves, and ETH carbonate standards.
Files in this Data Supplement: