Navigation Links
Understanding Earth processes and human impacts, plus another look at Mars
Date:3/27/2013

the crater center far from crater-wall katabatic winds, until the increasing relief of the resulting mound generates mound-flank slope winds strong enough to erode the mound. The slope wind enhanced erosion and transport (SWEET) hypothesis indicates mound formation dominantly by aeolian deposition with limited organic carbon preservation potential, and a relatively limited role for lacustrine and fluvial activity. Morphodynamic feedbacks between wind and topography are widely applicable to a range of sedimentary and ice mounds across the Martian surface, and possibly other planets.


Anoxia in the terrestrial environment during the late Mesoproterozoic

Vivien M. Cumming et al., Dept. of Earth Sciences, Durham University, South Road, Durham DH1 3LE, UK. Posted online ahead of print of 26 March 2013; http://dx.doi.org/10.1130/G34299.1.

A significant body of evidence suggests that the marine environment remained largely anoxic throughout most of the Precambrian. In contrast, little attention has been paid to the oxygenation history of terrestrial aquatic environments -- despite the significance of such settings for early eukaryote evolution. Vivien M. Cumming and colleagues address this lack by providing a geochemical and isotopic assessment of sediments from the late Mesoproterozoic Nonesuch Formation of central North America. They utilize rhenium-osmium (Re-Os) geochronology to yield a depositional age of 1078 million years (plus or minus 24 million years), while Os isotope compositions support existing evidence for a lacustrine setting. Fe-S-C systematics suggest that the Nonesuch Formation was deposited from an anoxic Fe-rich (ferruginous) water column. Thus, similar to the marine realm, anoxia persisted in terrestrial aquatic environments in the Middle to Late Proterozoic, but sulfidic water column conditions were not ubiquitous. The data suggest that oxygenati
'/>"/>

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

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

Related biology news :

1. Study amplifies understanding of hearing in baleen whales
2. New genetically engineered mice aid understanding of incurable neuromuscular disease
3. New data improve understanding of breast cancers multiple varieties
4. Understanding why some people have propensity to disease
5. Understanding the RNAi Reagents Market Overlap with Drug Discovery and Therapeutic Development is Critical for Pharmaceutical Leaders
6. Zebrafish could hold the key to understanding psychiatric disorders
7. A trained palate: Understanding complexities of taste, smell could lead to improved diet
8. New understanding of terrestrial formation has significant and far reaching future implications
9. Understanding faults and volcanics, plus life inside a rock
10. Discovery increases understanding how bacteria spread: U of A study
11. Stem cell research aids understanding of cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2015)... According to a new ... Area), Technology, Material (Optical Prism, Piezoelectric, Capacitive & ... Others) & Geography - Global Forecast to 2014 ... is expected to reach $14,500.07 Million by 2020, ... Browse 76 market Tables and 109 Figures spread ...
(Date:6/24/2015)... 24, 2015 The biologics safety testing market ... for the market include growth of the pharmaceutical and ... launches. Over the years, the number of drug approvals ... 2010, the FDA approved 225 drug applications and Health ... Europe accounted for 3,822 of the ...
(Date:6/24/2015)... DUBLIN , June 22, 2015 ... has announced the addition of the "Huawei ... Analysis" report to their offering. ... going to the opposite direction than Apple,s and ... innovative fingerprint sensor developed by Fingerprint Cards, a ...
Breaking Biology News(10 mins):Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2
... and Research Center report in the March issue of ... as fibulins 3 and 5, slow the growth of ... sprouting. The proteins are promising candidates for use in ... which regulate cell proliferation, migration and invasion. In the ...
... imaging study shows that age-related breakdown of myelin, the ... with the presence of a key genetic risk factor ... the January edition of the peer-reviewed journal Archives of ... evidence that myelin breakdown is a key contributor to ...
... home, but the presence of gas stresses out plants too. ... University of Nottingham have found that changes in the physical ... leaks in natural gas pipelines. "Our study was about ... leaks via the spectrum of reflected light from plants, which ...
Cached Biology News:Proteins stop blood-vessel and tumor growth in mice 2Imaging study links key genetic risk for Alzheimer's disease to myelin breakdown 2Plants used to detect gas leaks, from outer space! 2
(Date:7/29/2015)... -- US-Australian drug discovery company, Novogen Limited (ASX: NRT; ... to progressing its ground-breaking technology platforms to Phase 1 ... the Company delivers the best value for shareholders. ... said the Company currently had an extensive program of ... and academic partnerships and initiatives, and he was working ...
(Date:7/29/2015)... (PRWEB) , ... July 29, 2015 , ... ... manufacturer and supplier, announces the launch of their 2nd generation cell therapy POD® ... current miniPOD CT, but it also represents a new POD® design. , ...
(Date:7/29/2015)... 2015  Pfenex Inc. (NYSE MKT: PFNX) announced today ... released on Thursday, August 13, 2015, before the open ... will host a conference call to discuss the financial ... outlining the financial results and business update will be ... call 1-866-376-8058 (US) or 1-412-542-4131 (international) and reference Pfenex ...
(Date:7/29/2015)... (PRWEB) , ... July 29, 2015 , ... Finding gooey ... morning is quite normal. Although there are a considerable number of terms in popular ... that this post-sleep material is a mixture of mucus, blood cells, skin cells and ...
Breaking Biology Technology:Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 2G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 3Pfenex To Report Second Quarter 2015 Results and Provide Business Update on Thursday, August 13, 2015 2What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 2What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 3What Are ‘Eye Crusties’ Made Of? uBiome Invites Citizen Scientists to Find Out 4
... week from his position as director of the nonpartisan ... on the reasons for his ouster. , ,And while ... results of an audit of the bureaus performance as ... Speaker John Gard (R-Peshtigo) said the move was simple ...
... WI. - A business Internet Service Provider (ISP) in ... getting ready to launch a virus protection service ... FirstBridge, McAfee and Postini. , , Cyberlynk Network Inc. ... to add virus protection to the service offering in ...
... , ,MADISON-WI. - The Wisconsin Technology Network recently ... researcher about his work in games and education, and ... used in academics. , ,Kurt Squire, Ph.D., was ... his research on games and learning. A former elementary ...
Cached Biology Technology:Wahl Mute on Firing from Legislative IT Bureau -- but politics could be to blame 2Franklin Firm to Pick Fight with Postini? 2Franklin Firm to Pick Fight with Postini? 3Franklin Firm to Pick Fight with Postini? 4GameBased Learning Strategies 2GameBased Learning Strategies 3
Sequencing and primer design rolled into one. Just give us your clone and a reference sequence, and we'll do the rest. Single-strand or double-strand coverage. Guaranteed results....
... Rabbit polyclonal antibody to human XAB2 (amino ... first identified through its interaction with XPA. ... fraction of XAB2 interacts with the transcription-coupled ... as with RNA polymerase II. Microinjection experiments ...
... coating using advanced automated high throughput microplate processing equipment that ... also accommodate virtually any lot size of the following formats ... 8 and 12 well strips, ... 384 well microplate, ...
...
Biology Products: