| Abstract |
The techniques used and results of the extensive geological and geophysical surveys carried out at the Marysville geothermal area will be more fully described in this workshop session for those interested in the details of the exploration and results. In addition the results of well logging and of core studies in the deep exploration test MGE-1 will e described. Studies on core samples verify in general the values of various properties determined from the well logs. The geothermal system in a hydrothermal cell operating in a distributed set of fractures (a reservoir) in an Oligocene granite. The production capacity of the reservoir was not tested. However, at Roosevelt Hot Springs, Utah, a geothermal system in a similar rock type appears capable of delivering commercial quantities of steam. Thus, exploration should not favor porous sedimentary and volcanic rocks and discrete fault zones as the only viable type of geothermal reservoirs. |