Why are there so many faults in the Quaternary Faults Database with the same name?
Many faults are mapped as individual segments across an area. These fault segments are given a different value for name, number, code, or dip direction and so in the database each segment occurs as its own unique entity. For example, the San Andreas Fault has several fault segments, from letters a to h, and fault segment 1h has segments with age of last fault movement from historic (<150 years) to late Quaternary (<13,000 years), with dip direction from vertical to unspecified, and fault type from exposed to concealed.
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Where are the fault lines in the Eastern United States (east of the Rocky Mountains)?
Why are there no faults in the Great Valley of central California?
Why are there so many earthquakes and faults in the Western United States?
What is a "Quaternary" fault?
Where can I find a fault map of the United States? Is one available in GIS format?
I am looking to buy land near the location of a large historical earthquake. I am wondering where the fault line runs. What is the seismic activity in the area today? How did the quake change the contours and elevations of the area?
How do I find fault or hazard maps for California?
What is a fault and what are the different types?
What is the relationship between faults and earthquakes? What happens to a fault when an earthquake occurs?
UCERF3: A new earthquake forecast for California's complex fault system
With innovations, fresh data, and lessons learned from recent earthquakes, scientists have developed a new earthquake forecast model for California, a region under constant threat from potentially damaging events. The new model, referred to as the third Uniform California Earthquake Rupture Forecast, or "UCERF" (http://www.WGCEP.org/UCERF3),...
Field, Edward H.
20 cool facts about the New Madrid Seismic Zone-Commemorating the bicentennial of the New Madrid earthquake sequence, December 1811-February 1812 [poster]
This poster summarizes a few of the more significant facts about the series of large earthquakes that struck the New Madrid seismic zone of southeastern Missouri, northeastern Arkansas, and adjacent parts of Tennessee and Kentucky from December 1811 to February 1812. Three earthquakes in this sequence had a magnitude (M) of 7.0 or greater. The...
Williams, R.A.; McCallister, N.S.; Dart, R.L.
Quaternary fault and fold database of the United States
Machette, Michael N.; Haller, Kathleen M.; Dart, R.L.; Rhea, S.B. Young faults
Wallace, R.E.
Preliminary map showing known and suspected active faults in Colorado
Witkind, Irving Jerome
Preliminary map showing known and suspected active faults in Idaho
Witkind, Irving Jerome
Preliminary map showing known and suspected active faults in Wyoming
Witkind, Irving Jerome
Preliminary map showing known and suspected active faults in western Montana
Witkind, Irving Jerome
New USGS Maps Show San Francisco Bay Area's Active Faults and Underlying Geologic Deposits
The U.S. Geological Survey (USGS) is releasing two new maps providing a new look at the hazards and geologic history of the greater San Francisco Bay Area.
New Maps Show Active Earthquake Faults and Geologic Complexity of Bay Area
The U.S. Geological Survey (USGS) will release new maps of active faults in the Bay Area and the complex geology that underlays the region during the 1906 Earthquake Centennial Conference in San Francisco. Acting USGS Director Patrick Leahy will participate in the news briefing.
A Virtual Tour of the Hayward Fault
The U.S. Geological Survey has a new website that offers a virtual tour of the Hayward fault.
USGS Releases Quaternary Fault Database for the Nation
What are the faults in my state and where are they? When did they last have an earthquake? Now you can find out the answer to these questions online through a user-friendly interface developed by the USGS.
Faults and earthquakes recorded from the Monterey Peninsula to Pigeon Point
Faults and earthquakes recorded from the Monterey Peninsula to Pigeon Point — Map of faults and earthquakes recorded from the Monterey Peninsula to Pigeon Point, including the new offshore
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Santa Rosa area showing active faults
Shaded relief image of the Santa Rosa area showing active faults (black lines) and the detailed rupture pattern of the Rodgers Creek Fault where it crosses central Santa Rosa (in red). The orange, bean-shaped area represents the dense, magnetic body of rock on the east side of the fault beneath Santa Rosa. This body of rock may be largely responsible for the pattern of
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Exposed faults
Two faults (located on either side of project geologist Chris Fridrich) cutting Pleistocene fluvial gravels on the northern edge of the Poncha mountain block. These and other young faults exposed in area help reveal the latest kinematic (movement) and paleostress histories of the mountain block.
San-Andreas Fault
Aerial photo of the San Andreas Fault in the Carrizo Plain. By Ikluft - Own work, GFDL, https://commons.wikimedia.org/w/index.php?curid=3106006
Interactive Quarternary Fault Database
This database contains information on faults and associated folds in the United States that demonstrate geological evidence of coseismic surface deformation in large earthquakes during the Quaternary (the past 1.6 million years).
Traces of the Hayward Fault, California
The purpose of this map is to show the location of and evidence for recent movement on active fault traces within the Hayward Fault Zone, California. The mapped traces represent the integration of the following three different types of data: (1) geomorphic expression, (2) creep (aseismic fault slip),and (3) trench exposures.
Map of known active geologic faults in the San Francisco Bay region
Map of known active geologic faults in the San Francisco Bay region, California, including the Hayward Fault. The 72 percent probability of a magnitude (M) 6.7 or greater earthquake in the region includes well-known major plate-boundary faults, lesser-known faults, and unknown faults. The percentage shown within each colored circle is the probability that a M 6.7 or
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