Santa Cruz Mountains (Loma Prieta), California1989 10 18 00:04:15 UTC (Local 10/17/1989)Magnitude 6.9Intensity IX
3,757 Injuries 400 Severely Hurt Approximately 42 Fatalities
It was called the Loma Prieta earthquake, for the mountain closest to the epicenter.
The last big earthquake in San Francisco occurred on October 17, 1989, known as the Loma Prieta earthquake. It measured 6.9 on the Richter scale and caused significant damage to the city and surrounding areas.
The last large quake on the San Andreas was the 1989 Loma Prieta earthquake, magnitude 6.9.
The Loma Prieta earthquake was caused by the rupture of the San Andreas Fault system, resulting from the tectonic forces along the fault line. The movement of the Pacific Plate against the North American Plate caused stress to build up and eventually release in the form of an earthquake.
The Loma Prieta earthquake occurred along the San Andreas Fault in California, which is a transform plate boundary. Transform boundaries are where two tectonic plates slide past each other horizontally. The earthquake was caused by the release of stress that had built up along the fault line due to the plates' movement. The magnitude 6.9 earthquake struck on October 17, 1989, causing significant damage in the San Francisco Bay Area.
Both Mount Saint Helens and the San Andreas Fault (source of the Loma Prieta Earthquake) sit on the Pacific Ring of Fire, but there really is little connection between the two. They both sit on the North American Plate, but San Andreas is a transform boundary with the Pacific Plate (meaning the plates move by each other), while Mount Saint Helens sits on a convergent boundary, where the Juan de Fuca plate is subducting beneath the N. American plate. A connection between the events is unlikely.
because loma preita mountain sits on the boundry between the North American Tectonic plate and the Pacific plate where the san Andreas fault lies.
The 1989 Loma Prieta earthquake lasted about 15 seconds. It was a magnitude 6.9 earthquake that caused significant damage in the San Francisco Bay Area.
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The 1989 Loma Prieta earthquake in California caused an estimated $6 billion in damages.
The October 17, 1989, Loma Prieta, California, Earthquake The October 17, 1989, Loma Prieta, California, Earthquake
The 1989 Loma Prieta earthquake caused major damage to San Francisco.
The loma prieta earthquake in 1989.
The Loma Prieta earthquake occurred in Northern California on October 17, 1989. Its epicenter was located near Loma Prieta Peak in the Santa Cruz Mountains, about 10 miles northeast of Santa Cruz and 60 miles south of San Francisco. The earthquake registered a magnitude of 6.9 and caused significant damage, particularly in the San Francisco Bay Area, including the collapse of the Cypress Street Viaduct and the disruption of the World Series being held at the time.
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