| Information for COL as of February 1994 | |
|---|---|
| Station: College, Alaska | |
| Director: Dr. A W (Bill) Green | Network Affiliation: IRIS/USGS - GSN |
| Address: College Observatory U.S. Geological Survey 800 Yukon Drive Fairbanks, Alaska 99775-5160 |
Network Contact: Albuquerque Seismic Laboratory Building 10002 Kirtland AFB East Albuquerque, NM 87115 |
| Telephone: 303 273-8482 | Open Station: |
| Fax: 303 273-8450 | Parent Organization: USGS |
| Email: awgreen@gldfs.cr.usgs.gov | |
| Coordinates: Latitude: 64.8738N Longitude: 147.8511W |
Elevation to Sensor: 74.5 Depth to Sensor: 120 |
| Geology: The borehole is drilled into approximately 50 meters of various types of silt and loess. A colluvium layer exists between approximately 55 and 61 meters. Beneath the colluvium to 102 meters there are various types of granitic rocks, from felsic granitic finely grained rock to, at deeper sections, a highly altered granite. From 103 meters to 122 meters lithologies range from phyllite to calc phillite to quartzite at the bottom of the borehole. The surface vault sits atop the silt and loess deposits. | |
| Vault Conditions: The surface vault is climate controlled. The concrete pier is isolated from the floor of the vault. | |
| Site Description: N/A | |
| Addresses from which to obtain data. | |
| Station Instrumentation | |
|---|---|
| 1. Global Seismograph Network - GSN: [ IU ] | 14 Jun 1996 to present. |