Geology Times
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Earthquakes |  Subscribe to GeologyTimes.com RSS Feed Subscribe


More Articles
Improvements in fuel cell designImprovements in fuel cell design

Rediscovering Venus to find faraway earthsRediscovering Venus to find faraway earths

Archaeologists discover bronze remains of Iron Age chariotArchaeologists discover bronze remains of Iron Age chariot

Fish tale: New study evaluates antibiotic content in farm-raised fishFish tale: New study evaluates antibiotic content in farm-raised fish

New 3-D display technology promises greater energy efficiencyNew 3-D display technology promises greater energy efficiency

Researchers break nano barrier to engineer the first protein microfiberResearchers break nano barrier to engineer the first protein microfiber

Structure of an iron-transport protein revealedStructure of an iron-transport protein revealed

First step: From human cells to tissue-engineered esophagusFirst step: From human cells to tissue-engineered esophagus

Magnetic mirrors enable new technologies by reflecting light in uncanny waysMagnetic mirrors enable new technologies by reflecting light in uncanny ways

Lift weights, improve your memoryLift weights, improve your memory

Spiders: Survival of the fittest groupSpiders: Survival of the fittest group

Autophagy helps fast track stem cell activationAutophagy helps fast track stem cell activation

Myelin vital for learning new practical skillsMyelin vital for learning new practical skills

More physical activity improved school performanceMore physical activity improved school performance

Engineering new vehicle powertrainsEngineering new vehicle powertrains

Around the world in 400,000 years: The journey of the red foxAround the world in 400,000 years: The journey of the red fox

Active aging is much more than exerciseActive aging is much more than exercise

Study: New device can slow, reverse heart failureStudy: New device can slow, reverse heart failure

Are the world's religions ready for ET?Are the world's religions ready for ET?

Gut bacteria, artificial sweeteners and glucose intoleranceGut bacteria, artificial sweeteners and glucose intolerance

Recreating the stripe patterns found in animals by engineering synthetic gene networksRecreating the stripe patterns found in animals by engineering synthetic gene networks

Laying the groundwork for data-driven scienceLaying the groundwork for data-driven science

Hold on, tiger momHold on, tiger mom

Nature's designs inspire research into new light-based technologiesNature's designs inspire research into new light-based technologies

Missing piece found to help solve concussion puzzleMissing piece found to help solve concussion puzzle

Biologists delay the aging process by 'remote control'Biologists delay the aging process by 'remote control'

Geography matters: Model predicts how local 'shocks' influence U.S. economyGeography matters: Model predicts how local 'shocks' influence U.S. economy

Identified for the first time what kind of explosive has been used after the detonationIdentified for the first time what kind of explosive has been used after the detonation

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Mud pots signal possible extension of San Andreas Fault (7/30/2008)

Tags:
volcanoes, faults, san andreas fault, mud pots

Most of the major mud pots in the Wister Unit are cicular, steep-sided holes, with varying amounts of bubbling water, spattering mud, and hissing gas.  Some are completely inactive.  Their activity and morphology varies seasonally with the amount of rain and the level of the water table.  It is likely that the surface structure of many pots has been influenced by the earthen rings constructed around them.  Unlike the hot steaming mud pots and mud volcanoes, a few kilometers south in the Salton Sea geothermal field, the temperature of wate and mud in the Wister mud pots is not noticeably elevated.
Most of the major mud pots in the Wister Unit are cicular, steep-sided holes, with varying amounts of bubbling water, spattering mud, and hissing gas. Some are completely inactive. Their activity and morphology varies seasonally with the amount of rain and the level of the water table. It is likely that the surface structure of many pots has been influenced by the earthen rings constructed around them. Unlike the hot steaming mud pots and mud volcanoes, a few kilometers south in the Salton Sea geothermal field, the temperature of wate and mud in the Wister mud pots is not noticeably elevated.
A linear string of mud pots and mud volcanoes suggest surface evidence for a southern extension of the San Andreas Fault that runs through the Salton Sea, according to a paper published in the August issue of the Bulletin of the Seismological Society of America (BSSA).

Researchers David K. Lynch and Kenneth W. Hudnut of USGS report the results of a comprehensive survey of mud pots in the area immediately east of the southeastern-most portion of the Salton Sea in Imperial County, Calif. Using satellite imagery, followed by a physical examination of the land, they identified a cluster of 33 mud pots, mud volcanoes and sink holes which, when plotted, form a clear linear pattern.

Mud pots and mud volcanoes are geothermal features produced when water or gas is forced upward through soil and sediments. Mud pots can assume a variety of forms, typically being depressions or enclosed basins containing gas seeps, bubbling water or viscous mud. Mud pots can also be water-laden and appear as bubbling muddy water. Mud volcanoes, on the other hand, are elevated conical structures composed of accumulations of viscous mud extruded from a central vent. They range from finger-sized to several kilometers across, though the largest in the Salton Sea area are about 2 meters high. Small mud volcanoes on land, ranging from one to 10 feet in height, are usually called mud cones or gryphons and are usually associated with volcanic and seismic activity.

"The presence of a linear field of geothermal features is evidence of a planar rift extending to considerable depth in the crust," Lynch and Hudnut write.

While geologists have suspected that the San Andreas Fault extended beyond its confirmed terminal point near Bombay Beach, erosion, seismic inactivity and agricultural reshaping of the land have erased any previously identifiable surface evidence to support the theory.

The San Andreas Fault is a plate boundary separating Pacific and North American plates. "This new evidence indicates that the region is more complicated than we previously thought," Lynch said. "The extension of the San Andreas does not appear to be active. It is probably a very old part of the fault, and helps to explain the larger, more complex transition area between the Imperial fault and San Andreas fault, called the Brawley Seismic Zone."

The southern portion of the San Andreas Fault is the focus of the Great Southern California ShakeOut, which will be an earthquake drill on 13 Nov. 2008 designed to help prepare local citizens for the next very large earthquake. The scenario will call for a quake with a magnitude of 7.8 that begins in the same area that is the subject of this paper.

Original Paper (PDF) 11 MB

Note: This story has been adapted from a news release issued by the Seismological Society of America

Comments:

1. RestfullyGiggling

7/30/2008 4:51:50 PM MST

uugh?!?

Most of the major mud pots in the Wister Unit are cicular, steep-sided holes, with varying amounts of bubbling water, spattering mud, and hissing gas. Some are completely inactive. Their activity and morphology varies seasonally with the amount of rain and the level of the water table. It is likely that the surface structure of many pots has been influenced by the earthen rings constructed around them. Unlike the hot steaming mud pots and mud volcanoes, a few kilometers south in the Salton Sea geothermal field, the temperature of wate and mud in the Wister mud pots is not noticeably elevated.


2. Rayndra

8/18/2008 10:04:16 AM MST

A Tool song comes to mind...


Leave a Reply:

Search

New Articles
Some plants regenerate by duplicating their DNASome plants regenerate by duplicating their DNA

Good vibrations give electrons excitations that rock an insulator to go metallicGood vibrations give electrons excitations that rock an insulator to go metallic

Re-learning how to read a genomeRe-learning how to read a genome

Syracuse geologist reveals correlation between earthquakes, landslidesSyracuse geologist reveals correlation between earthquakes, landslides

Worldwide retreat of glaciers confirmed in unprecedented detailWorldwide retreat of glaciers confirmed in unprecedented detail

Fracture-controlled erodibility, great rock climbing

Study shows tectonic plates not rigid, deform horizontally in cooling processStudy shows tectonic plates not rigid, deform horizontally in cooling process

Felling pine trees to study their wind resistance

Massive geographic change may have triggered explosion of animal lifeMassive geographic change may have triggered explosion of animal life

Lack of oxygen delayed the rise of animals on EarthLack of oxygen delayed the rise of animals on Earth

Sediment supply drives floodplain evolution in Amazon Basin

Study of Chile earthquake finds new rock structure that affects earthquake ruptureStudy of Chile earthquake finds new rock structure that affects earthquake rupture

Magma pancakes beneath Lake Toba

New study finds oceans arrived early to EarthNew study finds oceans arrived early to Earth

Rare 2.5-billion-year-old rocks reveal hot spot of sulfur-breathing bacteriaRare 2.5-billion-year-old rocks reveal hot spot of sulfur-breathing bacteria



Archives
November 2014
October 2014
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007


Science Friends
Agricultural Science
Astronomy News
Biology News
Biomimicry Science
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetic Archaeology
Genetics News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.