| Title | INTERPRETING GEOTHERMAL PROCESSES AND FLUID SOURCES FROM FLUID INCLUSION ORGANIC COMPOUNDS AND CO2/N2 RATIOS |
|---|---|
| Authors | David I. Norman, Nigel Blamey, and Joseph N. Moore |
| Year | 2002 |
| Conference | Stanford Geothermal Workshop |
| Keywords | organic species, fluid inclusions |
| Abstract | The distribution of organic species is explored using data acquired from a new dual quadrupole system that routinely measures eighteen gaseous species. The process of condensation and its affect on gas distribution is modeled, and a new discrimination diagram based on total gaseous species and the CO2/N2 ratio is introduced. We conclude that organic species concentrations indicate source; that pyrolysis of organic material produces significant aromatic compounds; that Fischer-Tropsch reactions produce organic species dominated by methane; CO2/N2 vs. total gas plots are useful for illustrating boiling and condensation processes; and Cerro Prieto gas concentration are consistent with the gaseous species being modified by input of magmatic volatiles. |