Navigation Links
Quakes under Pacific floor reveal unexpected circulatory system
Date:1/9/2008

o record tiny, shallow earthquakesin this study, 7,000 of them, over 7 months in 2003 and 2004. Using new techniques developed by Lamont seismologist Felix Waldhauser, the quakes were located with great precision. They cluster neatly, outlining the cold waters apparent entrance. It dives straight down through the ridge about 700 meters, then fans out into a horizontal band about 200 meters wide before bottoming out at about 1.5 kilometers, just above the magma. Heated water rises back up through a dozen vents about 2 kilometers north along the ridge. The researchers interpret the quakes as the result of cold water passing through hot rocks and picking up their heata process that shrinks the rocks, and cracks them, creating the small quakes.

The downflow zone is thought to have been formed initially by a kink in the ridge, which stresses the rock enough to crack it mechanically. Seawater, forced down into the resulting space, eventually gets heated by the magma, then rises back to the seafloormuch the same process seen in a pot of boiling water. Tolstoy and her coauthors believe the water travels not through large faultsthe model previously favored by some scientists--but through systems of tiny cracks. Furthermore, their calculations suggest that the water moves a lot faster than previously thoughtperhaps a billion gallons per year through this particular system. Their chart of the waters route is reinforced by biologists observations from submersible dives that the area around the downflow chimney is more or less lifeless, while the surging vents are a riot of bacterial mats, mussels, tubeworms, and other weird creatures that thrive off the heat and chemicals.

Its an exciting and substantial contribution. It begins to look at some really big questions, said Dan Fornari, a marine geologist at Woods Hole Oceanographic Institution who was not involved in the study. Among other things, it is a mystery where vent organisms came from-
'/>"/>

Contact: Kevin Krajick
kkrajick@ei.columbia.edu
212-854-9729
The Earth Institute at Columbia University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Radioactive understudy may aid medical imaging, drug development
2. Insects giant leap reconstructed by founder of sociobiology
3. Katherine Freed wins first place at the International ISPE Undergraduate Poster Contest
4. Computational mathematical sciences receives NSF grant for undergraduate research
5. BGSU undergraduates to pilot groundbreaking genome project
6. Indigenous water frogs under threat
7. Atmospheric measuring device for understanding smog formation
8. Sunbathing tree frogs future under a cloud
9. Market testing of dietary supplements and drugs underscores value of USPs public health programs
10. Opium and marijuana research go underground
11. Mice help researchers understand chlamydia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Quakes under Pacific floor reveal unexpected circulatory system
(Date:7/30/2014)... joint venture between The University of Texas at San ... Center at San Antonio, has selected the winners of ... from UTSA and Lei Huang from the Health Science ... engineered ferritins for tracking and protecting neural stem cells ... focused on finding a treatment for stroke through stem ...
(Date:7/30/2014)... A study of dominance in female baboons suggests that the ... with mom, and to have lots of supportive sisters. , ... or strength, but by the rank of her mother - ... will be. For this reason, dominance rank in female baboons ... high-ranking mothers are guaranteed a good spot in the pecking ...
(Date:7/30/2014)... team of biologists, led by Clemson University associate professor ... pest that will pave the way for novel anti-fouling ... for medical and industrial applications. , The team,s findings, ... the last larval stage of barnacles that attaches to ... possibly polymeric material that acts as an underwater heavy-duty ...
Breaking Biology News(10 mins):Supportive moms and sisters boost female baboon's rank 2Supportive moms and sisters boost female baboon's rank 3Study: Marine pest provides advances in maritime anti-fouling and biomedicine 2
... evidence that still "sharp" older brains store and encode memories ... by a Johns Hopkins team in the issue of Nature ... as well to human brains, it could lead eventually to ... what healthy older brains are doing, rather than on the ...
... University of North Carolina at Chapel Hill have purified a ... by reversing a molecular modification previously thought permanent. , In ... is able to remove a methyl group from histone H3, ... just last year, the addition of a methyl group to ...
... noise, leads to oscillations in gene regulation that couldn't ... the relative importance of nature versus nurture in determining ... scientists report that noise could also be an important ... in Proceedings of the National Academy of Sciences released ...
Cached Biology News:'Sharp' older brains are not the same as younger brains 2Novel enzyme offers new look at gene regulation 2Phenotype is influenced by nature, nurture and noise 2
(Date:7/31/2014)... (PRWEB) July 31, 2014 Although ... of the first transcriptome-wide analyses appearing around 2008, ... assay for RNA measurement. In the last several ... more specific, work with smaller input amounts, process ... (eg, blood samples). On the bioinformatics side, there ...
(Date:7/31/2014)... (PRWEB) July 31, 2014 ... and collaboration company, is proud to announce the ... LMS complements Adobe Connect’s elearning tools to quickly ... delivers content with training tools for desktop and ... with LMS is the perfect online training solution, ...
(Date:7/31/2014)... Sales Horizons, a leader in sales ... training course – Mastering the Complex Sale ... Drawn from proven sales training programs used by thousands ... Sale online sales training course is available to every ... contact with customers, like technical support, engineers, clinical support, ...
(Date:7/30/2014)... Columbia, MD (PRWEB) July 30, 2014 ... announces today the release of the REVELERIS® ... allows organic chemists, preparative chromatographers, and other researchers ... (LC) using a single unit. , With the ... between flash and preparative chromatography modes with a ...
Breaking Biology Technology:The Evolution of RNA-Sequencing, Upcoming Live Webinar August 22 hosted by Xtalks 2SoundConnect Enhances Portfolio with Adobe Connect Learning Management System (LMS) 2Sales Horizons Offers Mastering the Complex Sale - a Comprehensive, Online Sales Skills Training Course 2Sales Horizons Offers Mastering the Complex Sale - a Comprehensive, Online Sales Skills Training Course 3Grace Launches New REVELERIS® Prep Purification System 2
... Calif., March 10 Poniard Pharmaceuticals, Inc. (Nasdaq: ... oncology therapies, today announced that it has rescheduled its ... financial results, which was previously scheduled to be held ... Time, in order to complete its financial statement close ...
... New research from Rice University and the University of ... significantly improve the performance of electrical commutators that are ... which appeared online this month in the journal ... of carbon nanotubes had 10 times less resistance than ...
... will be a huge burden on President Obama,s ... coverage. Epinex Diagnostics , a private ... a new diabetes monitoring device that could relieve ... http://www.newscom.com/cgi-bin/prnh/20090310/LA81722 )The Epinex G1A(TM) Rapid ...
Cached Biology Technology:Poniard Pharmaceuticals Reschedules Fourth Quarter and Fiscal 2008 Results Conference Call for Monday, March 16 2Nanotubes find niche in electric switches 2Can Obama Plan Tackle Diabetes Crisis? Epinex Test Could Help 2
... Panels were designed for full-length gene cloning ... to identify the desired cDNA clone. The ... 96-well "Master Plate," where each well contains ... the positive well(s) by gel electrophoresis of ...
... The Rapid-Screen cDNA Library Panels were ... just three sets of PCRs to identify ... analysis is performed in a 96-well "Master ... from 5,000 clones. Having identified the positive ...
... Formula variant: With the ... by Murashige and Skoog (1962) ... by Gamborg, et al. (1968). ... contain 4.4 grams of powder ...
... Maxi Kit provides a fast and simple procedure ... for buffer exchange, and for removing different types ... based on spin-column chromatography using Norgens patented protein ... MgCl 2 , NaCl, KCl, CaCl 2 , ...
Biology Products: