Navigation Links
Color in fossil insects, diamonds from the ancient ocean floor and modeling the world's largest rivers
Date:2/22/2013

effects of sulfate reduction on carbonate precipitation in normal marine, hypersaline, and alkaline environments
Patrick Meister, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, 28205 Bremen, Germany. Posted online 20 Feb. 2013; http://dx.doi.org/10.1130/G34185.1.

Bacteria living at the bottom of shallow lagoons or lakes are thought to be responsible for the formation of hard, layered limestone structures, so-called stromatolites. Stromatolites occur in some of the oldest rocks on Earth and may thus represent the earliest signature of life. A longstanding controversy is which type of bacteria is responsible for the precipitation of the limestone, the building material of the stromatolites. Some scientists suggest cyanobacteria, which are living at the very surface of the stromatolites and produce oxygen like plants. Others suggest that bacteria below the millimeter thick cyanobacterial layer capable of breathing sulfate in absence of oxygen are responsible for the precipitation of limestone. Patrick Meister of the Max Planck Institute, Bremen, demonstrates by a model calculation that if small amounts of sulfate are consumed, sulfate metabolism promotes limestone dissolution. Only if the available sulfate is almost completely consumed, which is not commonly the case in stromatolites, sulfate metabolism promotes precipitation. If we assume that the ocean was more oversaturated with limestone than the modern ocean during several times in Earth history, he writes, then sulfate metabolism would not have contributed to limestone precipitation at all. Thus, stromatolites may either have formed by other groups than sulfate reducing bacteria, or the bacteria were just passively encrusted by limestone.


Reconstructing magma failure and the degassing network of dome-building eruptions
Yan Lavalle et al., Earth, Ocean and Ecological Sciences, Unive
'/>"/>

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11

Related biology news :

1. University of Colorado and Orphan Technologies sign agreement
2. Bees attracted to contrasting colors when looking for nectar
3. Colorado Marijuana Task Force Gives Green Light To "Pot Tourism"
4. Study shows that diet of resistant starch helps the body resist colorectal cancer
5. Lakewood High School wins Colorado Science Bowl
6. Eating bright-colored fruits and vegetables may prevent or delay ALS
7. Bioinspired fibers change color when stretched
8. Cup color influences the taste of hot chocolate
9. Dance of water molecules turns fire-colored beetles into antifreeze artists
10. 3 new genetic links to colorectal cancer
11. Le Rouge et le Noir: Where the black dahlia gets its color
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... , June 30, 2014  Aware, Inc. (NASDAQ: ... software and services, previously announced on June 26, 2014 ... cash dividend of $1.75 per share, or approximately $40 ... of July 10, 2014 and a payment date of ... NASDAQ that it had set an ex-dividend date for ...
(Date:7/10/2014)... SHELTON, Conn. , July 2, 2014 NXT-ID, Inc., ... market, reports that CEO Mr. Gino Pereira was ... radio show in Tampa Florida . Mr. ... radio host Cedric Harris and how the Wocket™ ... secure alternative.  Cedric Harris tells ...
(Date:7/10/2014)... 2014 According to a new ... Control Systems Market Global Forecast, Market Share, Size, Growth ... Access Control systems market was valued at USD 15,406.1 ... a CAGR of 12.6% from 2014 to 2019, to ... 2019. Browse the full Electronic Access Control ...
Breaking Biology News(10 mins):NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5
... The California Institute for Regenerative Medicine (CIRM) has awarded ... associate professor at Sanford-Burnham Medical Research Institute (Sanford-Burnham). Chen,s ... part of CIRM,s Basic Biology IV awards program, which ... stem cells and how to work with them. This ...
... study tissue engineering and test new drugs often need ... They can do this by prodding the cells into ... the desired direction with acoustic waves, electric fields, or ... can position individual cells with a high level of ...
... , WEST LAFAYETTE, Ind. Researchers have created a new ... be used in drug-delivery patches powered by fermentation., The micropump ... water is added and the patch is placed on the ... yeast and sugar to ferment, generating a small amount of ...
Cached Biology News:California's stem cell agency boosts heart disease research at Sanford-Burnham 2Body heat, fermentation drive new drug-delivery 'micropump' 2
(Date:7/13/2014)... 2014 Deep Research Report on Global and ... study on the current state of the Nano Silver ... a basic overview of the industry, including definitions, applications ... domestic market analysis are provided with a focus on ... A comparison between the international and Chinese situation is ...
(Date:7/11/2014)... WEST PALM BEACH, Fla. , July 11, 2014 ... wide variety of high-quality peptides that are used solely ... online. To honor two successful years in business, Maxim ... Performance LLC, has just launched a new and updated ... addition, the research blog section has been updated with ...
(Date:7/11/2014)... DUBLIN , July 11, 2014 ... "International Transfection Technology Market - Global Industry Analysis, ... report to their offering. ... to introduce nucleic acids (either DNA or RNA) into ... therapy, mutation of cancer cells and protein metabolism by ...
(Date:7/11/2014)... 2014 EPFL and the University of  ... of John P. Donoghue . The American neuroscientist ... . The new Wyss Center for ... Geneva , has named as its director ... P. Donoghue , founder of Brown University,s Institute for ...
Breaking Biology Technology:2014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 22014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 3Maxim Peptide Celebrates Second Anniversary Online with an Updated Website and Special Deals Section 2International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 3
... Institute of Standards and Technology (NIST) may have ... of computer memory now under development. The work, ... University (GMU), aims to optimize nanowire-based charge-trapping memory ... computers and cell phones that can operate for ...
... DIEGO, May 25, 2011 Anadys Pharmaceuticals, Inc. (Nasdaq: ... for the treatment of hepatitis C, announced today that it ... ANA773, the Company,s oral immuno-modulator that acts via the TLR-7 ... Annual Meeting in Chicago, IL.  The data from the completed ...
... 2011 WaferGen Biosystems, Inc. (OTCBB:WGBS), a leading ... it has entered into definitive agreements with three ... LLC, Deerfield Management and Merlin Nexus, and certain ... $30.4 million private placement financing of equity and ...
Cached Biology Technology:NIST 'nanowire' measurements could improve computer memory 2Anadys Highlights ANA773 Data to be Presented at ASCO 2Anadys Highlights ANA773 Data to be Presented at ASCO 3Anadys Highlights ANA773 Data to be Presented at ASCO 4WaferGen Announces $30 Million Financing 2WaferGen Announces $30 Million Financing 3WaferGen Announces $30 Million Financing 4
Mouse Collagen IV...
The Captivate Disposable Sample Chamber is designed for use with the Captivate magnetic yoke assembly (C-24700) and can be used with our Captivate ferrofluid conjugates (C-21473 C-21474 C-21476) or ...
Sheep Serum US Origin...
Human PDGF, CF...
Biology Products: