Navigation Links
August 2009 Geology and GSA Today media highlights
Date:7/31/2009

during the mid-Cretaceous (80-120 million years ago): sea level was higher, continents were inundated, the climate was warmer, ocean basins were oxygen poor, voluminous volcanism occurred, and Earth's magnetic field underwent a period of relative stability. In the past, the cause of these substantial changes was believed to be due to a rapid pulse of seafloor spreading. However, it has also been suggested that new mid-oceanic ridges, created after the breakup of the supercontinent Pangea, were responsible. To resolve this debate, Seton et al. have reconstructed the world's ocean basins and obtained estimates of seafloor spreading rates and mid-oceanic ridge lengths from the Cretaceous to the present day. They have found that these planetary-wide changes were not related to a sudden change in global mid-oceanic ridge length, but rather were related to higher seafloor spreading rates and the changing age-area distribution of oceanic lithosphere.


Salt tectonics and collapse of Hebes Chasma, Valles Marineris, Mars
J.B. Adams et al., Dept. of Earth and Space Sciences, University of Washington, Seattle, Washington 98195, USA. Pages 691-694.

Planetary scientists have debated the origin of the great canyons of Valles Marineris on Mars ever since their discovery. Hypotheses have included erosion by giant floods, tectonic rifting, and collapse. Intense interest has been focused on the huge flood channels that drained some of the canyons, and on the materials that are exposed to depths of over 8 km. At stake in the debate is whether large volumes of water shaped the early history of Mars, and how much of that water might still be trapped below the surface. This study by Adams et al. presents evidence that Hebes Chasma, a 310-km-long canyon that has no surface outlet, was formed by collapse and draining of brines and entrained solids into sink holes. The study was based on scaled laboratory models of Hebes and on satellite images and
'/>"/>

Contact: Christa Stratton
cstratton@geosociety.org
303-357-1093
Geological Society of America
Source:Eurekalert

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

Related biology news :

1. USGS news: August science picks
2. August LabBits: A media tip sheet from the MBL in Woods Hole
3. AGU journal highlights -- August 6, 2008
4. Story tips from the US Department of Energys Oak Ridge National Laboratory, August 2008
5. Highlights from the August 2008 Journal of the American Dietetic Association
6. August 2008 Geology and GSA Today media highlights
7. BioScience tip sheet July/August 2008
8. Geoscientists meet to discuss Rocky Mountain geology
9. April 2009 Geology and GSA Today media highlights
10. February 2009 Geology and GSA Today media highlights
11. January GEOLOGY media highlights
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... started near the City of Entiat on Tuesday, July ... fire quickly grew to over 1,000 acres by evening. ... is under investigation by the Washington Department of Natural ... local resources in developing fire control strategies and tactics. ... State Department of Natural Resources, (WA DNR), Bureau of ...
(Date:7/11/2014)... scientists have set a "mouse TRAP" to capture the ... recent study published in the Journal of Clinical ... technique called TRAP to extract cellular and genetic information ... scientists at the Rockefeller Institute for Medical Research in ... protein-making machinery, or ribosomes, of the cell type of ...
(Date:7/11/2014)... group members to reduce aggression and gain access to ... grooming activities shows a certain pattern across the day. ... Biology Letters . , Grooming between individuals in ... motives. To be groomed has hygienic benefits and is ... can provide access to infants, mating opportunities and high ...
Breaking Biology News(10 mins):Baboons groom early in the day to get benefits later 2
... almost 30 years, researchers have sought to identify a ... during photosynthesis. A team at Ludwig-Maximilians-Universitt (LMU) in Munich ... to be an old acquaintance. Photosynthesis sustains ... molecular oxygen that higher organisms depend on. The process ...
... Marine resource managers often gauge the health of species ... relationships in the Bering Sea found that it isn,t the ... how densely they are aggregated. It,s more than searching ... balance how much energy they expend in searching for food ...
... make animals, well, brainier, but that boost in brain size ... evidence reported on January 3rd in Current Biology , ... for large and small brain sizes. The findings lend ... ability do go together, a topic that has been a ...
Cached Biology News:Photosynthesis: The last link in the chain 2Bering Sea study finds prey density more important to predators than biomass 2Bering Sea study finds prey density more important to predators than biomass 3Big brains are pricey, guppy study shows 2
(Date:7/10/2014)... Faso (PRWEB) July 10, 2014 ... today have access to an additional family planning ... access to contraception at all levels of the ... lower-dose formulation of a widely used contraceptive—Pfizer’s Depo-Provera® ... , Burkina Faso is the first of four ...
(Date:7/10/2014)... Boston, Mass. (PRWEB) July 10, 2014 ... , today announced that Alan Swahn, a former vice ... Terascala’s executive team as vice president of marketing. Terascala’s ... from Dell and NetApp create the highest performance and ... has been appointed to guide Terascala’s channel expansion and ...
(Date:7/10/2014)... July 10, 2014 EvoDerma ’s NOOME ... This rejuvenating device now comes with a second treatment cup ... time. , The new cup is thinner on the edges ... to target rough, thin and uneven surfaces on the face, ... for a stimulating treatment on areas such as the cheeks ...
(Date:7/10/2014)... , July 10, 2014  Kainos Capital, a ... brands, today announced that it has acquired the Slim-Fast ... in the business. Terms of the transaction were not ... and meal replacement business that markets ready-to-drink shakes, powders, ... North America and in the ...
Breaking Biology Technology:Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6Terascala Expands Executive Team 2Terascala Expands Executive Team 3Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Kainos Capital Acquires Slim-Fast From Unilever 2
... of dementia ... and participation in clinical trials., Silicon Valley,s Conway, Campbell ... Internet to Transform Medical Research and Philanthropic Outreach, ... of,California, San Francisco (UCSF) today launched a comprehensive Internet,video ...
... Life Sciences Inc.,(TSX: PLI) ("ProMetic") today presented ... trial in patients with chemotherapy-induced,anemia ("CIA") at ... Association,held in Copenhagen, Denmark this week., ... presented data on,PBI-1402 in a poster entitled ...
... VANCOUVER, June 13 /PRNewswire-FirstCall/ - Angiotech Pharmaceuticals,Inc. (NASDAQ: ... pharmaceutical and,medical device company, today announced the market ... available immediately for distribution,and sale in the U.S. ... made from a rapidly resorbing,polymer, is intended primarily ...
Cached Biology Technology:UCSF and YouTube Launch Channel Dedicated to Educating the Public About Neurodegenerative Diseases 2UCSF and YouTube Launch Channel Dedicated to Educating the Public About Neurodegenerative Diseases 3Positive clinical data for PBI-1402 presented at the Annual Congress of the European Hematology Association 2Positive clinical data for PBI-1402 presented at the Annual Congress of the European Hematology Association 3Angiotech announces market launch of Quill(TM) SRS MONODERM(TM) 2Angiotech announces market launch of Quill(TM) SRS MONODERM(TM) 3Angiotech announces market launch of Quill(TM) SRS MONODERM(TM) 4
This antibody detects an ~25 kDa band, corresponding to the expected molecular mass of Rab3A, on immunoblots. The antibody specificity is confirmed in peptide inhibition immunoblotting studies....
HLA II DG+DR+DP Monoclonal Antibody, Purified, Unconjugated, Clone: IQU9 This antibody is specific for the monomorphic determinant of the HLA Class II beta chains of the human MHC (28 kDa)....
Anti-gp120/160(SIV/mac239) Immunogen: gp120(SIV/mac239) protein (Genebank accession #M33262)...
Phospho-MEF2A(Thr312)...
Biology Products: