| Information for SCZ as of September 1996 | |
|---|---|
| Station: Santa Cruz, California, USA (UTC-7) | |
| Director: W. Schillinger | Network Affiliation: GEOSCOPE |
| Address: University of California Santa Cruz Richter Seismologial Laboratory 147 Applied Science Building Santa Cruz CA 95064 |
Network Contact: Institut de Physique du Globe Programme GEOSCOPE 4 place Jussieu 75252 Paris cedex 05 France |
| Telephone: 408 459-3878 | Open Station: Yes |
| Fax: 408 459-2127 | Parent Organization: University of California Santa Cruz, USA |
| Telex: 9109971741 | |
| Coordinates: Latitude: 36.598N Longitude: 121.403W |
Elevation to Sensor: 261 Depth to Sensor: 5 |
| Geology: The tunnel descends at an angle of about 20 degrees downward into the canyon wall. It was created by excavation of a pegmatitic dike (probably mistaken for a hydrothermal quartz vein by early miners). The host for the dike is quartz diorite to granodiorite of Middle Cretaceous which is deeply weathered by not hydrothermally altered. Nearby are outcrops of high grade metamorphic rocks, primarily marble and quartzo-feldspathic schist with minor quartzite and amphibolite. These rocks are unknown sedimentary age but their metamorphism probably occured during emplacement of plutons in the Cretaceous. | |
| Vault Conditions: Dry, temperature +14 to +16 Celsius degrees. | |
| Site Description: Located in Chualar Canyon, 24 kilometers southeast of the city of Salinas. Small tunnel 6 meters long supposed to be an abandoned gold mining tunnel. Senors on the bottom on concrete. | |
| Addresses from which to obtain data. | |
| Station Instrumentation | |
|---|---|
| 1.GEOSCOPE Programme network: [G] Teletransmitted station. | 11 Jun 1986 to Present |