Evidence of young fault movements on the Pajarito fault system in the area of Los Alamos, New Mexico
Technical Report
·
OSTI ID:5177604
Los Alamos lies along and upon the Pajarito fault system, a major intragraben structure of the Rio Grande rift. This fault system consists of over 100 km of interconnected fault zones and traces. Geomorphic evidence, including righ-lateral steps in stream valleys and disrupted drainages, as well as apparent vertical offset of alluvial units determined by seismic refraction, strongly suggests that the Pajarito fault zone is active. To evaluate seismic hazards in the Los Alamos area, values for recurrence intervals and characteristic earthquakes of the faults must be determined. We recommend the trenching of young alluvium in Rendija and Guaje canyons to obtain information regarding recurrence of the characteristic earthquake. 23 refs., 9 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5177604
- Report Number(s):
- LA-11156-MS; ON: DE88007818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
510500* -- Environment
Terrestrial-- Site Resource & Use Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
580201 -- Geophysics-- Seismology & Tectonics-- (1980-1989)
FEDERAL REGION VI
FORECASTING
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GROUND MOTION
LOS ALAMOS
MOTION
NEW MEXICO
NORTH AMERICA
RECOMMENDATIONS
RIO GRANDE RIFT
SEISMIC EVENTS
SEISMICITY
USA
Terrestrial-- Site Resource & Use Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
580201 -- Geophysics-- Seismology & Tectonics-- (1980-1989)
FEDERAL REGION VI
FORECASTING
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GROUND MOTION
LOS ALAMOS
MOTION
NEW MEXICO
NORTH AMERICA
RECOMMENDATIONS
RIO GRANDE RIFT
SEISMIC EVENTS
SEISMICITY
USA