Los Angeles, city, seat of Los Angeles county, southern California, U.S. It is the second most populous city and metropolitan area in the U.S. Home of the American entertainment industry, the city is also known for its pleasant weather, urban sprawl, tra
Southern California Offshore, Area Location of Proposed Breakwater inSan Pedro 1891/1892, Index Map Proposed Small Craft Harbors dated Mar. 1947. 1 3 Port of Los Angeles Los Angeles Outer Harbor Area, East of Entrance - Channel Soundings After Partial Dredging, March 1936. 1 3 Ranchos Old ...
mountain building in the Middle Rockies occurred during the Laramide Orogeny, but the mountains of the spectacularTeton Rangeattained their height less than 10 million years ago by moving more than 20,000 vertical feet relative to the floor of Jackson Hole along an east-dipping fault....
state into a relatively consolidated folded structure. This time is reckoned relative to the age of the primary epoch of folding. Individual phases in the development of geosynclines and the folded systems that emerge from them are shown by identifying structural events, which occur in a definite...
They were able to identify nearly 500 additional fault lines that could produce damaging earthquakes. In the last 200 years, 37 U.S. states have seen earthquakes exceeding magnitude 5, "highlighting a long history of seismic activity across this country," the USGS said. ...
an earthquake, a familiar possibility living in Southern California. I’d ridden through a few signficant temblors, often feeling a shudder followed by a gentle rolling sensation as if a large hand had slapped the side of the house and the solid ground it sits upon was now a ...
At Owens Lake (about 160 kilometers from the epicenter), salt beds shifted, and brine lines were bent into S-shapes. Many surface ruptures were observed along the lower slopes of Bear Mountain, in the White Wolf fault zone. The somewhat flat, poorly consolidated alluvium in the valley was...
The San Gabriel, Chino, and San Bernardino sedimentary basins in Southern California amplify earthquake ground motions and prolong the duration of shaking due to the basins' shape and low seismic velocities. In the event of a major earthquake rupture along the southern segment of the San Andreas ...
There are only two subway lines in L.A., one of which shares most of its stops with the other. Underground heavy rail is admittedly not our strong point—blame it on fault lines and politics. Though the original lines were named after colors (with the exception of the Expo Line), Metro...
Western Cordillera, in western North America, a system of mountain ranges extending from the U.S. state of Alaska through northwestern Canada, the western United States, and into Mexico. The largest range is the Canadian Rockies; others include the Rocky