Mussel Rock is a physical feature on the coast of San Mateo County, California, offshore from the city of Daly City. It consists of one large and numerous smaller rocks of a type known as a stack, where a headland is eroded unevenly, leaving small islands. Official website: http://www. ... Daly City, known as the “Gateway to the Peninsula”, is located in San Mateo County, California, United States, directly south of San Francisco, California. ... Stack, near Old Harry Rocks Old Harry Rocks A stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast. ...

It is best known for being the closest point to the epicenter of the 1906 San Francisco Earthquake, and where the San Andreas Fault enters the San Francisco Peninsula from the northeast. An additional minor fault, the Mussel Rock Fault, was identified in 2000. The epicenter is directly above the earthquakes focus. ... Arnold Genthes famous photograph of San Francisco following the earthquake, looking towards the fire on Sacramento Street. ... View of the San Andreas Fault on the Carrizo Plain in central California San Andreas Fault is a geological fault that spans a length of roughly 800 miles (1287 kilometres) through California, United States. ... The San Francisco peninsula separates the San Francisco Bay from the Pacific Ocean. ...

The area above Mussel Rock consists of steep cliffs with frequent landslides, threatening homes in a subdivision above. The adjacent area is a city park.

Geology

Mussel Rock is a "greenstone assemblage" which is part of the Franciscan Complex, which is the bedrock under San Francisco, and was transported to the site by subduction about 80 or 90 million years ago. It is older than the nearby sedimentary rocks which are part of the Merced Formation, which are about 3 million years old. Bedrock is the native consolidated rock underlying the Earths surface. ... This page is a candidate for speedy deletion. ... Subduction zones mark sites of convective downwelling of the Earths lithosphere. ... Two types of sedimentary rock: limey shale overlaid by limestone. ...

References

• Sudran, Dan (2004). Where the Faultline Meets the Coastline. (HTML) California Wild: The Magazine of the California Academy of Sciences. URL accessed on 2006-04-26.

2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... April 26 is the 116th day of the year in the Gregorian Calendar (117th in leap years). ...

External links

• 1982-83 El Niño Mussel Rock Coastal Erosion Map - USGS
• Cliff Hangers: 17 houses on Daly City block sliding toward ocean plunge