The Nunez fault and its surface rupture during the Coalinga earthquake sequence

Journal Article · Mon Jan 01 04:00:00 EST 1990 · United States Geological Survey, Professional Paper; (USA)

OSTI ID:5542402

Rymer, M J; Kendrick, K J; Lienkaemper, J J; Clark, M M

This chapter describes the surface rupture and displacements that formed along the Nunez fault in association with the M{sub L} = 5.2 earthquake of June 11, 1983. It also discusses the probable total displacement, fault history, configuration of the fault at depth, and relations of these characteristics to faulting processes associated with the 1983 Coalinga earthquake sequence. The Nunez fault is situated about 12 km northwest of Coalinga and 14 km west of the May 2 main shock which was on a separate, distinct fault. The Nunez fault is a 4.2-km-long, north-south-trending, right-reverse, oblique-slip fault that parallels local faults of similar size and sense of displacement. This paper describes: surface faulting; surface rupture; displacement; extent of the Nunez fault; history of movement, including the amount of total displacement and timing of fault displacement (slope profiles, Quaternary terrace conglomerate and clastic dikes, and trench exposures); dip of the fault; and seismic moment.

• OSTI ID: 5542402
• Journal Information: United States Geological Survey, Professional Paper; (USA), Journal Name: United States Geological Survey, Professional Paper; (USA) Vol. 1487; ISSN XGPPA
• Country of Publication: United States
• Language: English

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58 GEOSCIENCES
580000* -- Geosciences
AGE ESTIMATION
CALIFORNIA
CENOZOIC ERA
CONGLOMERATES
DEFORMATION
DEPTH
DEVELOPED COUNTRIES
DIKES
DIMENSIONS
EARTHQUAKE MAGNITUDE
EARTHQUAKES
FAILURES
FEDERAL REGION IX
GEOLOGIC AGES
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC HISTORY
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGY
GROUND MOTION
GROUND UPLIFT
INCLINED STRATA
MECHANICS
MOTION
NORTH AMERICA
QUATERNARY PERIOD
ROCK MECHANICS
ROCKS
RUPTURES
SEDIMENTARY ROCKS
SEISMIC EFFECTS
SEISMIC EVENTS
USA