Category Archive 'Geology'
25 Jun 2009

Sarychev Peak, Kuril Islands

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Just by good luck, the International Space Station happened to be passing over Sarychev Peak on Matua Island in the Kuril Islands on June 12th at the perfect time to allow astronauts to photograph its volcanic eruption.

NASA Earth Observatory

Hat tip to Karen L. Myers.

05 Jan 2009

Alarm Over Increased Seismic Activity at Yellowstone

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You won’t need to worry about Global Warming if the Yellowstone Caldera decides to erupt.

London Times:

Hundreds of earthquakes have hit Yellowstone National Park, raising fears of a more powerful volcanic eruption.

The earthquake swarm, the biggest in more than 20 years, is being closely monitored by scientists and emergency authorities.

The series of small quakes included three last Friday which measured stronger than magnitude 3.0. The strongest since this latest swarm of quakes began on December 27 was 3.9.

No damage has yet been reported but scientists say this level of activity – there have been more than 500 tremors in the last week – is highly unusual.

“The earthquake sequence is the most intense in this area for some years,” said the Yellowstone Volcano Observatory. Some of the larger earthquakes have been felt by park employees and guests, according to the observatory.

The swarm is occurring beneath the northern part of Yellowstone Lake in the park. Yellowstone sits on the caldera of an ancient supervolcano and continuing geothermal activity can be seen in the picturesque geysers and steam holes, such as Old Faithful.

About 1,000 to 2,000 tremors a year have been recorded since 2004. …

Professor Robert B. Smith, a geophysicist at the University of Utah and one of the leading experts on earthquake and volcanic activity at Yellowstone, said that the swarm was significant.

“It’s not business as usual,” he said. “This is a large earthquake swarm, and we’ve recorded several hundred. We are paying careful attention. This is an important sequence.”

The last full-scale explosion of the Yellowstone Supervolcano, the Lava Creek eruption which happened approximately 640,000 years ago, ejected about 240 cubic miles of rock and dust into the sky.

Geologists have been closely monitoring the rise and fall of the Yellowstone Plateau as an indication of changes in magma chamber pressure.

The Yellowstone caldera floor has risen recently – almost 3in per year for the past three years – a rate more than three times greater than ever observed since such measurements began in 1923.

From mid-summer 2004 through to mid-summer 2008, the land surface within the caldera moved upwards as much as 8in at the White Lake GPS station. The last major earthquake swarm was in 1985 and lasted three months.

USGS Yellowstone Volcano Observatory site

Map of recent earthquakes

03 Dec 2008

New Carbon Dating of Thera Produces Archaeological Puzzle

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Recent carbon dating tests of the Thera Eruption provides a date contradicting the established chronological sequence of Egyptian and Cypriot pottery found on the island.

www.an.gr:

Two olive branches buried by a Minoan-era eruption of the volcano on the island of Thera (modern-day Santorini) have enabled precise radiocarbon dating of the catastrophe to 1613 BC, with an error margin of plus or minus 10 years, according to two researchers who presented conclusions of their previously published research during an event on Tuesday at the Danish Archaeological Institute of Athens.

Speaking at an event entitled “The Enigma of Dating the Minoan Eruption – Data from Santorini and Egypt”, the study’s authors, Dr. Walter Friedrich of the Danish University of Aarhus and Dr. Walter Kutschera of the Austrian University of Vienna, said data left by the branch of an olive tree with 72 annular growth rings was used for dating via the radiocarbon method, while a second olive branch — found just nine metres away from the first — was unearthed in July 2007 and has not yet been analysed. …

On the other hand, as the two researchers pointed out, archaeological evidence linked with the Historical Dating of Ancient Egypt indicate that the Thera eruption must have occurred after the start of the New Kingdom in Egypt in 1530 BC.

The two researchers said their find (olive tree) represents a serious contradiction between the results of the scientific method (radiocarbon dating) and scholarly work in the humanities (history-archaeology), with both sides holding strong arguments to support their conclusions.

The radiocarbon dating places the cataclysmic eruption, blamed for heralding the end to the Minoan civilisation, a century earlier than previous scientific finds.

The eruption and the subsequent devastation throughout the Aegean has long piqued researchers’ interest, with many scholars pointing to Plato’s reference of the “lost continent of Atlantis” on vague memories, passed down generation to generation in the ancient Greek world, of the catastrophe.

05 Aug 2008

A Strange Land Called California

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The LA Times reports a curious local phenomenon.

A patch of land in Ventura County’s section of Los Padres National Forest where the ground recently heated up to 812 degrees continues to puzzle firefighters and geologists after weeks of monitoring.

“It’s a thermal anomaly,” said Ron Oatman, spokesman for the Ventura County Fire Department.

Firefighters responded to reports of a blaze there a month and a half ago, when observers noticed smoke rising from the parched scrub. But when they arrived, they found no flames.

Firefighters and geologists who have surveyed the area in the Sespe Oil Field are uncertain what’s causing the heat, but they do have a theory.

Allen King, a retired geologist with the U.S. Forest Service who went to the site Friday, said the smoking ground is “a normal occurrence” that does not appear to be the result of human activity.

The hot spot is in an area considered to be an active landslide that has shifted for more than 60 years. Several hundred feet below its cracked surface lie pockets of gas, tar and oil.

King said he suspects cracks along the landslide’s slope allow oxygen to enter into the earth and hydrocarbon material to “seep out” of the fine-grain shale. The combination can create underground combustion, he said.

King said the depth at which hydrocarbon material can be found “varies tremendously” and that he does not know at what depth the combustion in the oil field is occurring. The 812-degree temperature was measured Friday about a foot below the surface, he said. No other temperature checks have been made since, according to Oatman.

During Friday’s visit to the hot spot, smoke rose through five cracks in the ground. From a distance, it looked like “a small, smoldering camp fire,” Oatman said. The smoke comes and goes, he said, and fire officials expect it will last until the next heavy rainfall, when water and mud plug the fissures.

Mr. King says similar high temperatures have been recorded at that location five times since 1987.

24 Apr 2008

Worse Than Anthropogenic Global Warming!

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24 Apr 2007

Kryptonite Discovered in Serbia

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Reuters:

Kryptonite, which robbed Superman of his powers, is no longer the stuff of comic books and films.

A mineral found by geologists in Serbia shares virtually the same chemical composition as the fictional kryptonite from outer space, used by the superhero’s nemesis Lex Luther to weaken him in the film “Superman Returns”.

“We will have to be careful with it — we wouldn’t want to deprive Earth of its most famous superhero!,” said Dr Chris Stanley, a mineralogist at London’s Natural History Museum.

Stanley, who revealed the identity of the mysterious new mineral, discovered the match after searching the Internet for its chemical formula – sodium lithium boron silicate hydroxide.

“I was amazed to discover that same scientific name written on a case of rock containing kryptonite stolen by Lex Luther from a museum in the film Superman Returns,” he said.

The substance has been confirmed as a new mineral after tests by scientists at the Natural History Museum in London and the National Research Council in Canada.

But instead of the large green crystals in Superman comics, the real thing is a white, powdery substance which contains no fluorine and is non-radioactive.

The mineral, to be named Jadarite, will go on show at the London’s Natural History Museum at certain times of the day on Wednesday, April 25, and Sunday, May 13.

Hat tip to Dr. Milton Ong.

23 Feb 2007

This Morning’s Rant on Global Warming (From My Class List)

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The liberal view of the universe

Liberals confuse a consensus of journalists, celebrities, and do-gooders, combined with activist science, with something meaningful. If they lived in the 1920s, they’d be championing eugenics. If they lived in the 1880s, they’d be worried about sex as a health threat and the rising tide of inferior races. These kinds of consensi are always wrong.

Sophisters, calculators, and economists have cooked up models and projections based on various kinds of data, but we really know perfectly well that mankind does not understand the typical duration and causes of climate cycles and periods of glaciation, and cannot accurately predict weather more than a week in advance.

The theory of Global Warming is ultimately based on nothing more than the unavailability, post-1980, of a continuing pattern of cooler weather. When it had been getting colder for a few years, the same kinds of authority were projecting a new Ice Age, brought about by mankind’s hubris in creating industrial civilization with attendant contamination of pristine Nature. The vital remedy was more taxes and greater regulatory restriction of American productivity and energy consumption. When temperature trends reversed, curiously enough, the causes and the cure remained exactly the same. The only change is that the media and the left went from agitating over Global Cooling to agitating over Global Warming without missing a beat, and essentially the same agitprop has simply increased in volume and alleged urgency for years.

What depresses me is the fact that Americans can emerge from 16+ years of education still capable of falling for this kind of ridiculous nonsense. To believe in Global Warming, I’d say, you have to be basically unconscious of the highly limited state of human knowledge of the earth’s past. We know that there were periods in which the planet’s climate was considerably cooler than at present, and we know that there were periods when it was considerably warmer. We do not have anything like exhaustive knowledge of the climate throughout earth’s geologic history. Nor do we now why periods of different climate occurred.

The rise of modern science of geology goes back roughly two lousy centuries. Continental drift, a fairly basic factor in geologic matters, was not even accepted before the 1960s, within many of our lifetimes. When that bozo on the evening news starts describing today’s temperature as an all-time record, what kind of records do you suppose he’s working with? Exactly how meaningful is anything of the sort? What can 20+ years of slightly warmer weather signify?

I attribute this lunacy to a combination of too much city living and Hollywood. There has been an endless stream of horror movies about Godzilla rising from Tokyo Bay, giant ants, mutated this, or catastrophic that, all attributable to the wickedness of mankind’s pursuit of material gratification. Today’s citified Americans all believe that they are the absolute center of the universe, and that the world and man’s position in it resembles the old New Yorker cartoon of the view from 9th Avenue. If I dropped all the liberals somewhere west of the Missouri and they had to walk out, their view of man’s centrality in the universe would be changed mightily.

13 May 2006

Mount St. Helens Volcano Grows New Rock Slab

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A new rock slab is growing at more than one meter a day on the Mt. St. Helens volcano in the state of Washington. You can actually see it grow in this very brief time-lapse photopgraphy video. Hit replay, and watch closely a few times.

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