Table 4. δ18O measured in clinopyroxenes and sanidines of Campi Flegrei selected rocks.
| Volcanic Formation | Samples | Weight (µg) | δ18Ocorr(‰) | assumed % | %yield |
|---|---|---|---|---|---|
| clinopyroxene | |||||
| Averno | V6 CPX | 1753 | 7.04 | 43 | 121 |
| Pomici Principali | P1 CPX | 1724 | 6.95 | 43 | 87 |
| Monte Olibano | OL CPX | 1736 | 6.66 | 43 | 103 |
| sanidine | |||||
| Averno | AVI SAN | 1720 | 8.38 | 47 | 75 |
| Averno | AV6 fallout | 1751 | 8.32 | 47 | 73 |
| Pomici Principali | PP1 SAN | 1722 | 8.09 | 47 | 67 |
| Pomici Principali | P3 SAN | 1751 | 8.11 | 47 | 67 |
| Monte Olibano | OL SAN | 1724 | 8.16 | 47 | 65 |
| Campanian Ignimbrite | TF SAN | 1722 | 8.51 | 47 | 70 |
| Standards | |||||
| G JAG | 1732 | 5.40 | |||
| G JAG | 1726 | 5.45 |
*G JAG - internal standard calibrated against the NBS-30 biotite international standard.