Navigation Links
March GEOLOGY and GSA TODAY media highlights
Date:2/29/2008

14.

Flow deposits laid down on Mars within the last few years look like they were laid down by flowing water. In this paper, Pelletier et al. test this hypothesis by computer modeling of water-based versus dry landsliding. Dry landslides can "fluidize" under certain conditions and appear as though they were laid down by water. Model results show that the observed deposit on Mars was most consistent with a dry landsliding process. This has important implications in the debate about the presence/absence of liquid water on the surface of Mars today.

Nanometer-scale complexity, growth, and diagenesis in desert varnish

Laurence Garvie et al., Center for Meteorite Studies, School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287, USA. Pages 215-218.

Finely layered coatings, rich in manganese and iron and commonly called desert varnish, are common on rocks in desert environments worldwide. These coatings have been the subject of intense scientific debate and extensive research, owing to their potential for indicating past climates, for dating geological surfaces, and, via artwork carved in varnish, for providing information about ancient cultures. The full scientific potential of desert varnish can only be realized through a rigorous probing of the physico-chemical variables and fundamental properties of varnish components, especially its mineralogical components. Determining the mineralogy of the manganese- and iron-bearing materials is challenging because the minerals are extremely fine grained, generally down to nanometer-sized, and often poorly crystalline. In addition, the thin film-like nature of varnish on rock makes separating and studying it difficult. Garvie et al. used novel sample preparation methods, high-resolution electron microscopy, and spectroscopic imaging to provide novel insights into desert varnish structure, mineralogy, and chemistry. The spectroscopic imaging sho
'/>"/>

Contact: Ann Cairns
acairns@geosociety.org
303-357-1056
Geological Society of America
Source:Eurekalert

2

GOOD

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Related biology news :

1. Media highlights in the March 1 issue of Biophysical Journal
2. February Geology and GSA Today media highlights
3. December GEOLOGY and GSA TODAY media highlights
4. November GEOLOGY and GSA TODAY Media Highlights
5. October Geology and GSA Today media highlights
6. September Geology and GSA Today media highlights
7. Priming scientists for successful media interviews
8. Media highlights in the January issues of Biophysical Journal
9. Media advisory -- 2008 Ocean Sciences Meeting
10. Oliguridylation-mediated histone mRNA decay
11. Immediate action needed to save corals from climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2013)... Science , Automated conserved noncoding ... promoter evolution among grasses , Within the genome ... DNA that undergo little change in position and sequence ... any proteins. Some of these evolutionarily stable sequences, so-called ... expression of other genes or the condensation of chromosomes, ...
(Date:5/23/2013)... Health at Emory University, along with partners at ... $4 million grant over four years to establish ... Exposome Research Center: Understanding Lifetime Exposures). The grant ... the United States. , The HERCULES Center ... Health Sciences (NIEHS) of the National Institutes of ...
(Date:5/23/2013)... undergo surgery or harsh treatments because science fails ... forms of the disease. Researchers at Case Western ... developing technology that allows patients to safely choose ... or take drastic measures. , The project is ... of biomedical engineering at Case Western Reserve and ...
Breaking Biology News(10 mins):Frontiers news briefs: May 23 2Frontiers news briefs: May 23 3Emory, Georgia Tech receive first human exposome center grant in US 2Emory, Georgia Tech receive first human exposome center grant in US 3Using big data to identify prostate cancers and best treatments 2Using big data to identify prostate cancers and best treatments 3
... reporting new evidence that certain high blood pressure drugs may ... cause of vision loss in people with diabetes. The study, ... lead to new ways to prevent or treat the sight-threatening ... of Proteome Research , a monthly publication. Edward ...
... are embracing new tactics to deal with an estimated ... from being won. That,s the focus of an article ... News (C&EN) , ACS, weekly newsmagazine. Counterfeiting ploys include ... identify their products as genuine. C&EN Associate Editor ...
... shown that it is not, as has long been presumed, to ... Biomechanics, who have modelled the cohesive strength of food after a ... food to ensure it is in a firm blob and, therefore, ... Dr Roland Ennos, a biomechanic in the Faculty of Life Sciences ...
Cached Biology News:How people work ... and the fingerprint mystery 2
(Date:5/23/2013)... (PRWEB) May 23, 2013 Patheon ... manufacturing services to the global pharmaceutical industry, will host ... Novel Approaches to Testing” on Tuesday, June 4, 2013 ... pharmaceutical manufacturers are required to comply with regulations for ... practices with limited scientific underpinning and little evaluation of ...
(Date:5/23/2013)... 23, 2013 PI’s new LPS-24 ... provide 15 mm travel range with closed-loop sensor ... dimensions make these new positioners the ideal choice ... vacuum rated version is also available. , ... datasheets can be found at: , http://www.physikinstrumente.com/en/products/prdetail.php?sortnr=1000745&prw-lps24 ...
(Date:5/23/2013)... 23, 2013 BioTrends Research Group, one ... for specialized biopharmaceutical issues, finds that, unaided, one ... specialists reported that in the past six months, ... treatment) in anticipation of the next generation of ... when only 6 percent reported that they had ...
(Date:5/23/2013)... May 23, 2013 The New Jersey ... industries, Black Data Processing Associates (BDPA), is hosting its ... 8, 2013. This all-day event will encourage students and ... the ins and outs from many of the industries’ ... at the New Jersey Institute of Technology, the event ...
Breaking Biology Technology:Patheon to Present on “Cleaning Validation: Science, Risk and Novel Approaches to Testing” 2Precision Positioning System Uses Miniaturezed Piezo Linear Motor: LPS-24 Linear Stage by PI 2The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 2The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 3Black Data Processing Associates (BDPA) New Jersey Hosts 10th Annual Families in Technology Day June 8, 2013 2
... tactics. However, there is one area where I finally decided it's ... sure, there are various articles and such that describe the "improved ... The problem is that at least half of us use no ... to prove my point. I took my laptop home from work, ...
... colony of human embryonic stem cells grown over a period ... feeder cells. The cell nuclei are stained green; the cell ... Madison, Wis. Tackling a pressing and controversial ... Research Institute and the University of Wisconsin-Madison have crafted a ...
... duking it out with Los Angeles for second place in ... Chicago's business community is finite. , ,In Milwaukee and throughout ... therefore follows that the technology business community is even smaller. ... curse. , ,One of the inevitable outcomes of spending some ...
Cached Biology Technology:Screen-door security: most wireless networks left wide open 2Screen-door security: most wireless networks left wide open 3Human stem cells stand on their own 2Human stem cells stand on their own 3How name-dropping can make interviews fail 2How name-dropping can make interviews fail 3How name-dropping can make interviews fail 4