Earth Changes
Vilama Calera may be another unappreciated 'supervolcano' (like Yellowstone) hidden in a mega-volcano nursery, dubbed the Eduardo Avaroa Caldera Complex in the tri-section of Argentine, Bolivia and Chile.
Geologist Miguel M. Soler of the National University of Jujuy in San Salvador de Jujuy, Argentina, said: "Vilama Caldera formed during a single event that emitted approximately 2000 cubic kilometres (almost 500 cubic miles) of pyroclastic material."
The iceberg is about 8 miles wide and 15 miles long. It broke free of the Fimbul Ice Shelf, a large glacial ice sheet along the northwestern section of Queen Maud Land, in the eastern Weddell Sea near Antarctica.
The quake, which struck at 5:56 p.m., occurred on the Mendocino fault and was centered about 6 miles southwest of Petrolia and 180 miles north of San Francisco, the USGS said.
The temblor struck an extremely rural part of the state and was felt as far as the town of Blue Lake, about 50 miles north of the epicenter.
The Humboldt County Sheriff's Department said that no injuries or property damage were immediately reported.
New cracks appear in Elke DeMuynck's ceiling every few weeks, zigzagging across her living room. Month after month, year after year, she patches, paints and waits.
"It definitely lets you know your house is constantly shifting," DeMuynck said. So do the gate outside that swings uselessly 21/2 inches from its latch, the bulges in the street and the geology students who make pilgrimages to her cul-de-sac.
The Hawaii-based Pacific Tsunami Warning Center did not issue a tsunami warning.
The magnitude-6 quake was centered 270 miles west-northwest of the Fiji capital, Suva, USGS said.
There were no immediate reports of casualties.
For no apparent reason, the comet's nucleus split into at least three "mini-comets" flying single file through space. Astronomers watched with interest, but the view was blurry even through large telescopes. The comet was a hundred and fifty million miles away.
We're about to get a much closer look. In May 2006 the fragments are going to fly past Earth closer than any comet has come in almost eighty years.