Title: Oxygen and carbon isotope studies of calcite from the Cerro Prieto geothermal field
Abstract: The inferences derived from oxygen and carbon isotope data for calcite samples from the Cerro Prieto geothermal field depend on the sample type. The δ18O values for calcite in sandstone provide a reliable basis for estimating stable reservoir temperatures and the δ18O values for calcite in shale can be related to the extent and spatial distribution of subsurface flow. The δ18O values for vein calcite record short-lived polythermal fracture-filling episodes at temperatures that may differ from those in the adjacent stable reservoir. The oxygen isotope data for shales indicate a minimum water - rock volume ratio of 2:1. Even this high flow was greatly exceeded in sandstones, with the result that the reservoir fluids are isotopically well-mixed and of relatively low salinity.
Publication Year: 1979
Publication Date: 1979-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 12
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot