Navigation Links
Geological Society of America's top journal, Geology, begins 2014 with 10 new articles
Date:1/8/2014

30 million years ago, was very different than the chemistry of the modern ocean. Estimates by Natalie Spear and colleagues suggest that mid-Neoproterozoic marine sulfate concentrations were almost 90% lower than modern values. The major-ion composition (Na+, K+, Ca2+, Mg2+, Cl-, SO42-, and HCO3-) of seawater has varied considerably during Phanerozoic time (the past 541 million years). This is the first direct measurement of the composition of mid-Neoproterozoic seawater, making it the oldest measurement of seawater chemistry. This research extends present-day knowledge of seawater chemistry by approximately 300 million years.


Basins and bedrock: Spatial variation in 10Be erosion rates and increasing relief in the southern Rocky Mountains, USA
David P. Dethier et al., Department of Geosciences, Williams College, Williamstown, Massachusetts 01267, USA; ddethier@williams.edu. Published online ahead of print on 6 Jan. 2014, http://dx.doi.org/10.1130/G34922.1.

David Dethier and colleagues show that long-term erosion rates can be influenced by rock strength. In the southern Rocky Mountain landscape, weaker sedimentary rocks erode more rapidly than strong rocks such as granite, helping to produce sharp topographic contrasts. On a global basis, slope is the primary control of long-term erosion rates. To estimate erosion rates at time scales of thousands to tens of thousands of years, Dethier and colleagues used the concentration of 10Be (a cosmogenic isotope) in alluvial sediment in 60 small Colorado, Nebraska, and Wyoming watersheds. Their results demonstrate that at a constant slope, sedimentary rocks in Cenozoic basins (e.g., North Park, Colorado) are eroding at about 75 mm per thousand years, two to four times faster than the granitic rocks of the adjacent Rocky Mountains. Concentrations of 10Be and 26Al in near-surface gran
'/>"/>

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. Geological Society of America Cordilleran section meets in the heart of Mexico
2. New Antarctic geological timeline aids future sea-level predictions
3. The Geological Society of America Journal Geology: Dynamic geoscience
4. Research on geological storage of CO2 to reduce greenhouse gas emissions
5. 2013 medals and awards of the Geological Society of America
6. American Society of Plant Biologists honors early career women scientists
7. John A. Kaufman named 2012 Dotter Lecturer by Society of Interventional Radiology Foundation
8. Registration open for the Ecological Society of Americas 2012 Annual Meeting in Portland, Ore.
9. European Society of Human Reproduction and Embryology 28th Annual Meeting -- Istanbul
10. The American Society for Microbiology honors Ellen Jo Baron
11. The Genetics Society of America announces DeLill Nasser Travel Award recipients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/23/2014)... organisms, including humans, have parasitic DNA fragments called "jumping ... instructions in the process. And that phenomenon can result ... the University of Rochester now report that the "jumping ... when a multi-function protein stops keeping them in check ... In a study published today in Nature Communications ...
(Date:9/22/2014)... Yale University researchers are studying a potential new ... respiratory disease in which scars develop in the lungs ... microRNA mimic, miR-29, which is delivered to lung tissue ... fibrosis, it reversed fibrosis after several days. , ... EMBO Molecular Medicine . , "The mimic, when ...
(Date:9/22/2014)... by-products such as straw could be made quicker and ... UK and France. , Researchers funded by the ... variant straw plants whose cell walls are more easily ... significantly smaller or weaker than regular plants. , ... security as biofuels from non-food crops become easier and ...
Breaking Biology News(10 mins):A multi-function protein is key to stopping genomic parasites from 'jumping' 2Reversing the effects of pulmonary fibrosis 2Plant variants point the way to improved biofuel production 2
... protein 'wiring' that differs markedly from the cellular circuitry ... to the development of antimalarial drugs that exploit that ... parasite responsible for an estimated 1 million deaths per ... markedly from the cellular circuitry of other higher organisms, ...
... discovery in basic plant biology that may set the stage ... scientists have identified for the first time a protein that ... toxin to kill the cell. It had been known that ... plant cells, but never before has a protein been found ...
... University have successfully cultured in a laboratory a microorganism with ... advance that may ultimately help shed light on the ecology ... smallest free living cell known and probably the most abundant ... time to study the SAR11 "proteorhodopsin" gene in a laboratory, ...
Cached Biology News:Researchers develop new method to help find deadly malaria parasite's Achilles heel 2Researchers develop new method to help find deadly malaria parasite's Achilles heel 3Biologists discover new pathway into plant cells 2Biologists discover new pathway into plant cells 3Odd energy mechanism in bacteria analyzed 2
(Date:9/23/2014)... (PRWEB) September 23, 2014 For the fifth ... Inc. 500|5000 list of the fastest-growing companies. , “We’re ... acknowledged yet again by Inc. Magazine,” ExakTime CEO Tony Pappas ... list by posting a three-year growth rate of 61 percent ... that time by more than 40 percent. , Pappas cited ...
(Date:9/23/2014)... 23, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the ... Q3 orders to date to $5 million. The orders are ... . "We continue to see new orders coming ... these orders, our backlog has climbed to over $11 million." ... a leading clean technology company that designs, manufactures and distributes ...
(Date:9/23/2014)... TORONTO , Sept. 23, 2014 /PRNewswire/ - Portage ... Canadian Securities Exchange: PBT.U), is pleased to announce ... (PPL) has added two more  consultants to its ... uveitis. PPL-003 uses a new proprietary cell permeable ... deliver its anti-inflammatory cargo into the eye. ...
(Date:9/23/2014)... CAMBRIDGE, Mass. , Sept. 23, 2014   ... developed a comprehensive suite of tools to enable the ... care, today announced that it has been awarded Phase ... Grant (SBIR) from the National Institutes of Health (NIH) ... biorepositories. Logo - http://photos.prnewswire.com/prnh/20140922/147649 ...
Breaking Biology Technology:ExakTime Makes Inc. 5000 List for the Fifth Time 2Portage Announces New Consultants for its PPL-003 Development Programs 2Portage Announces New Consultants for its PPL-003 Development Programs 3Portage Announces New Consultants for its PPL-003 Development Programs 4GenoSpace Awarded Fast Track SBIR Grant to Enable Data Access and Cohort Construction for Biorepositories 2
... ... biotechnology, ... Sciences today announced a partnership under which,Metahelix will assist in ... expert technological guidance,regarding usage. The efforts of this collaboration will ...
... Market Research, a,global provider of pharmaceutical competitive ... report providing critical strategic insight,for pharma and ... market for Rheumatoid,Arthritis (RA) therapies., In ... Analysis: Rheumatoid,Arthritis Q2 2008, MedPredict,s global Thought ...
... Arete Therapeutics Inc., a,privately-held biopharmaceutical company developing first-in-class ... of,James Sabry, M.D., Ph.D., as president and chief ... and member of the board of directors,since March ... position of,president and chief executive officer, who will ...
Cached Biology Technology:Sigma-Aldrich Announces Collaboration With Metahelix Life Sciences 2Sigma-Aldrich Announces Collaboration With Metahelix Life Sciences 3New MedPredict Report Highlights Trend Toward Early Diagnosis and Treatment of Rheumatoid Arthritis, Impact on Pharmaceutical Development 2Arete Therapeutics Names James Sabry, M.D., Ph.D., President and Chief Executive Officer 2