Navigation Links
Contacts, collisions, sutures, belts, and margins -- new GSA Bulletin content
Date:4/9/2013

olution coincided with and was perhaps triggered by major impact events approx. 3260 to 3240 million years ago.


Structural control on the formation of iron-oxide concretions and Liesegang bands in faulted, poorly lithified Cenozoic sandstones of the Paraba Basin, Brazil
F. Balsamo et al., Dept. of Physics and Earth Sciences, Parma University, Campus Universitario, Parco Area delle Scienze 157/A, I-43124, Parma, Italy. Posted online 7 March 2013; http://dx.doi.org/10.1130/B30686.1.

In this contribution, F. Balsamo and colleagues describe the occurrence and geometry of different types of iron oxide deposits, which are significant indicators of the mobility of Fe2+ and O2 in shallow groundwater, associated with strike-slip faults developed in the vadose zone in quartz-dominated sandstones of the Paraba Basin, NE Brazil. The development of highly permeable and low-permeability domains along isolated fault segments promoted the physical mixing of Fe2+-rich waters and oxygenated groundwater. This arrangement favors O2 diffusion in flowing Fe2+-rich waters and, consequently, iron oxide precipitation as sand impregnations, small nodular concretions, and well-cemented mineral masses. The formation of hydraulically isolated compartments along more complex strike-slip fault zones promoted the development of Liesegang bands (a classical example of spontaneous self-organization process) in a reaction zone dominated by pore-water molecular diffusion of O2 into Fe2+-rich stagnant water. The structural-diagenetic coupling described in this paper support the role of tectonic activity on near-surface sandstone diagenesis in determining preferential hydraulic pathways for the physicochemical interaction between oxygenated groundwater and iron-rich fluids. Structural setting, fault zone architecture, and related grain size-permeability structures determine the dominant mode of solution
'/>"/>

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

Page: 1 2 3 4 5 6 7 8 9

Related biology news :

1. GSA Bulletin presents studies in Antarctica, Italy, Mexico, Algeria, Mongolia, and more
2. Summer Geoscience from GSA Bulletin
3. Medbox Communicates with Shareholders, Comments on Pending Transition to OTC Bulletin Board, and Announces Appearance on Fox Business News Channel
4. GSA Bulletin: From Titan to Tibet
5. GSA Bulletin celebrates GSAs 125th Anniversary with new geologic time scale
6. GSA Bulletin starts 2013 with 13 new papers published online ahead of print
7. Kauai, the Petrified Forest, Costa Rica, and more: New GSA Bulletin articles now online
8. Researchers say tart cherries have the highest anti-inflammatory content of any food
9. International Life Sciences Conferences Address Advancements in High-Content Analysis, Sample Preparation, Clinical Trial Supply and Protein and Antibody Engineering
10. JCI early table of contents for Mar. 15, 2013
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/30/2015)... 30, 2015 Genisphere announced ... to help further develop Genisphere,s therapeutics capabilities and portfolio. ... having spent much of the last 25 years in ... Bioscience, and Johnson & Johnson. Tom started his career ... Biotech Corporate Finance. He graduated from Dartmouth College with ...
(Date:6/25/2015)... CITY , June 25, 2015  Imagine a ... steps toward a healthier, happier life. That,s exactly what ... designed to do. The cutting-edge, portable health program provides ... real-life solutions to help improve your lifestyle and nutrition. ... awards dinner and gala Wednesday night, USANA,s THA was ...
(Date:6/24/2015)... , June 24, 2015  Synaptics Inc. ... human interface solutions, today announced that Sharp has ... provide secure authentication for its latest flagship smartphone ... more than 200 million shipments of its fingerprint ... reinforces Synaptics, strength, scalability and leadership in the ...
Breaking Biology News(10 mins):Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3@USANAinc's Personalized Nutrition Program Wins Industry Innovation Award 2Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2
... Technology have developed a computer program that trains itself ... Fungi which range from yeast to mushrooms ... understanding the recently sequenced fungal genomes can help in ... help to identify potential targets for therapeutic intervention and ...
... out of a scrum herpes virus can cause a skin ... studied the spread of the disease among sumo wrestlers in Japan ... be even more pathogenic, according to an article published in the ... "Scrumpox", or herpes gladiatorum , is a skin infection ...
... has established a National Corrosion Center where researchers will ... that is estimated to cost $276 billion a year ... center, Rice is working closely with NACE International, an ... around the world who are involved in virtually every ...
Cached Biology News:Researchers develop new self-training gene prediction program for fungi 2Researchers develop new self-training gene prediction program for fungi 3Researchers develop new self-training gene prediction program for fungi 4Deadly rugby virus spreads in sumo wrestlers 2Rice University establishes National Corrosion Center 2
(Date:6/30/2015)... ... June 30, 2015 , ... Cannavoices , Inc., a ... digital video and broadcast initiative. Produced by filmmakers, the multi-platform initiative aims to ... medical cannabis stories ever assembled. , Cannavoices profiles Advocates, Patients, Entrepreneurs, Growers, ...
(Date:6/29/2015)... and Manhattan, KS (PRWEB) , ... June 29, ... ... acquired US PATENT 7736892 B2. Under the terms of the agreement, MediVet will ... Cord Matrix Stem Cells (UCMSCs). MB-007 is currently in pre-clinical development as a ...
(Date:6/29/2015)... June 29, 2015  AACC, a global scientific ... through laboratory medicine, is pleased to announce that ... Chemistry , has increased to 7.9 in the ... places Clinical Chemistry in the top ... significant influence of the research it publishes on ...
(Date:6/29/2015)... , June 29, 2015 According to ... RNA, XNA), by Application (Diagnostics, Therapeutics, R&D), by Technology (SELEX, ... Pharmaceutical Companies, CRO) - Global Forecast to 2020", published by ... Million by 2020 from $107.56 Million in 2015, at a ... ables and 67 F igures spread ...
Breaking Biology Technology:Cannavoices Launches a Legal Medical Cannabis Documentary Initiative 2Cannavoices Launches a Legal Medical Cannabis Documentary Initiative 3MediVet Biologics Acquires Exclusive Patent License from Kansas State University 2MediVet Biologics Acquires Exclusive Patent License from Kansas State University 3AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 2AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 3Aptamers Market Worth $244.93 Million by 2020 2Aptamers Market Worth $244.93 Million by 2020 3Aptamers Market Worth $244.93 Million by 2020 4
... businesses will receive funding for technology development projects ... Technology Assistance Grant program. , ,The TAG program ... Wisconsin high-tech companies to offset the cost of ... are: Automated Notification Systems, Inc. , Eau ...
... They can cost as much as buildings and there ... the right people are involved and excited, said presenters at ... , ,"User ownership is absolutely essential," said Peter Strombom, CIO ... the application, if they don't feel they're being heard, you're ...
... - The nightmare of managing liability in identity ... of WTN Media's Digital Healthcare Conference, and healthcare providers ... it would be. , ,Using a hypothetical case of ... Michael Best & Friedrich demonstrated how much trouble ...
Cached Biology Technology:Healthcare leaders tell how they rally stakeholders around IT 2Managing the nightmare of identity theft 2Managing the nightmare of identity theft 3Managing the nightmare of identity theft 4
... formulated specifically for Alkaline Phosphatase conjugates. ... activity for both the enzyme and the ... This product has been chemically engineered ... a longer shelf life, resistance to various ...
... for arraying proteins of interest with ... equipment. DiscoverLight Protein Array Kits allow ... cell lysate or antibody in a ... specially designed nitrocellulose membranes with a ...
... formulated specifically for Alkaline Phosphatase conjugates. ... activity for both the enzyme and the ... This product has been chemically engineered ... a longer shelf life, resistance to various ...
Request Info...
Biology Products: