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・ San Jose Earthquakes (1974–88)
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San Jose Hills
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・ San Jose Institute of Contemporary Art
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・ San Jose Island kangaroo rat
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・ San Jose language
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・ San Jose Maverick
・ San Jose mayoral election, 2014
・ San Jose Mercury News


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San Jose Hills : ウィキペディア英語版
San Jose Hills

The San Jose Hills are a part of the Transverse Ranges located in Eastern Los Angeles County, California, marking the border between the San Gabriel Valley and the Pomona Valley in the Inland Empire. It includes portions of Covina, West Covina, Walnut, Pomona, and San Dimas. To the south, the valley of San Jose Creek (a line followed by the Pomona Freeway) separates the San Jose Hills from the Puente Hills.
== Geology ==
The San Jose Hills are part of the geologic history of Southern California. The San Gabriel Mountains (the Transverse ranges located north of the San Jose Hills) were uplifted by tectonic force as a result of the colliding Pacific and North American plates more than a billion years ago. This tectonic pressure created a deeply fractured and fissured sheets of rock that began to shift direction about 25 million years ago. Gradually, a portion of this fissured rock began to uplift from the ocean forming the Los Angeles Basin. Further folding and fissures helped form other uplifts that include both the San Jose Hills and Puente Hills. These hills, prone to erosion, were formed their domed appearance while still submerged under water. The San Jose Hills Fault has the possible magnitude of 6.0 to 6.5 and last was active in 1990.
The San Jose Hills' highest peak is Buzzard Peak at . The highest elevations are composed of conglomerate rock with small, shallow patches of soil. At the bases, silty clay loam dominates. These geologic conditions restrain water absorption towards the rockier higher elevations, which allow runoff to hyrdrate the base creating a more inhabitable (friendly) environment for plants. Because of the transverse (east-west) orientation of the range, this effect is pronounced on the north slope due to the lower rates of evaporation caused by sunlight directed from the south.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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