| Title | Structural Analysis of Precambrian Rocks at the Hot Dry Rock Site at Fenton Hill, New Mexico |
|---|---|
| Authors | Kerry L. Burns and Robert M. Potter |
| Year | 1995 |
| Conference | World Geothermal Congress |
| Keywords | precambrian, metamorphism, radiometric ages, hot dry rock, Fenton Hill, televiewer, foliations, fractures |
| Abstract | The of basement rock at Fenton Hill comprises Precambrian gneiss, schist, amphibolite, pegmatite, and granitoids with affinities in metamorphic and structural history to surface outcrops in the Tusas and Picuris Ranges. Televiewer measurements of structures were analyzed by taking advantage of the spatial continuity of foliations. Folds in the foliation are preaominantly conical forms due to interference between structures formed in F2 and F3 tectonic events. Field observations of outcrops in the Picuris Range show that the fractures are predominantly an X-T network controlled by the lithological layering, and statistical evidence indicates that this layer-controlled network persists to depth at Fenton Hill. |