Dating rocks from mt st helens
Tremblers from the three quake swarms mostly hit in three areas: Lewis Lake, the Lower Geyser Basin and the northwest part of Norris Geyser Basin.
But, including many smaller events which were not detected, there were many more quakes than this.With 1620 small earthquakes between January 17, 2010 and February 1, 2010, this swarm was the second largest ever recorded in the Yellowstone Caldera.The largest of these shocks was a magnitude 3.8 on January 21, 2010 at PM MST.18 earthquakes on January 2, 2009 12 earthquakes on January 1, 2009 58 earthquakes on December 31, 2008 23 Earthquakes on December 30, 2008 38 Earthquakes on December 29, 2008 103 Earthquakes on December 28, 2008 "I am advising all State officials around Yellowstone National Park for a potential State of Emergency.The three swarms hit in the following areas: Lewis Lake, the Lower Geyser Basin and the northwest part of Norris Geyser Basin.Earlier this month, on September 15, the largest earthquake to rock Yellowstone in over a year occurred about six miles north of the Old Faithful Geyser. It takes a magnitude of about 3.0 for people to feel it, a Yellowstone representative named Al Nash told the The recent swarms of earthquakes began on September 10 and finished up on September 16.It can go on for hundreds of years.” Usually only about half a dozen earthquakes occur each year in Yellowstone, Smith noted, so it is quite unusual for this level of swarm activity to rock the park.
Written by: Nancy Schimelpfening The most recent swarm started after the January 2010 Haiti earthquake.
"The research could not have been done without satellite radar data." On 7-31-05, I watched a film on the Discovery Channel with Tom Brokaw, most of which was fiction based on a future scenario but, based on real science of Yellowstone history, and using real films from Mt. Norris Basin itself has raised 5 inches, and the entire Caldera has raised 35 inches since 1923.
It is also known that one end of Yellowstone Lake is 100 feet higher than it used to be and flooding the land at the other end and killing the trees.
The quakes happened about 15 miles southeast of West Yellowstone.
The largest earthquake recording during the swarm, a 3.6, was measured nearby about 4 1/2 hours later.
"I don't know of any other magma body that's been imaged that's that big," says Robert Smith, a geophysicist at the University of Utah in Salt Lake City.