Sunday, April 3, 2011

Stop 1: Mussel Rock Park (Which contains part of the San Andreas fault)


My first stop that I plan on visiting is Mussel Rock Park in Daly City, California which is on the San Andreas (10 letters) fault. This park is at approximately 37 degrees north and 122 degrees west. The San Andreas fault is a transform boundary between the Pacific and North American plates. A transform boundary is when two plates interact with side to side motion but don't actually crash into each other. Though there are no active volcanoes on the San Andreas fault, there are tiny elevated ridges in the ground marking the fault. Probably the most famous historical earthquake here was the 1906 San Franciscoquake which measured at an 8.3 on the Richter scale (very strong!). The ground shifted 31 feet! An estimated 3000 people were killed. The most recent activity is just about now--experts are predicting another major earthquake really soon for the fault has been noted to produce a major earthquake every hundred years or so. Here is a picture of the San Andreas fault [www.qwiki.com]:

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