Navigation Links
Sandy beaches, hydrocarbon reservoirs, tectonic tilting: It's all about geology
Date:6/29/2012

itute of Technology, Pasadena, California 91125, USA. Posted online 29 June 2012; doi: 10.1130/G33093.1.

The most extreme climate transitions in Earth history are recorded by Neoproterozoic glacial deposits with overlying "cap" carbonate rocks indicating a potential snowball, or ice-entombed, Earth. Giant symmetrical wave ripples preserved within these rocks are often interpreted to form under extreme wave conditions. Using a new model for ripple formation, we show that the first-order control on forming this type of ripple is sediment size, not wave climate. New measurements of ripple wavelengths and particle sizes from the approx. 635 million-year-old Nuccaleena Formation, Australia, indicate that the giant ripples are generally composed of coarse to very coarse sand, indicating that they likely formed under normal wave conditions. Numerical simulations of flow over ripples suggest that the ripples may have formed over long time periods with variable wave climates in conjunction with rapid seabed cementation. Together our analysis indicates that, rather than extreme wave conditions, the giant wave ripples are a consequence of the unusual mode of carbonate precipitation during this unusual period of Earth history.


Influence of drainage divide structure on the distribution of mountain peaks

James A. Spotila, Department of Geosciences, Virginia Tech, Blacksburg, Virginia 24061, USA. Posted online 29 June 2012; doi: 10.1130/G33338.1.

People have long been fascinated by mountainous topography, yet peaks and ridges have been left at the periphery of scientific investigation of landscape evolution, which traditionally has focused on valley-shaping processes. Author James Spotila shows that the distribution of mountain peaks conforms closely with drainage divide structure. Specifically, peaks occur along the intersection of drainage divides, and are not randomly distributed throughout the landscape. This is likely because dra
'/>"/>

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. A new vision for harnessing data about life on Earth
2. NIST launches new website to educate industry about alternatives to mercury thermometers
3. New discoveries about severe malaria
4. Purdue professor to speak before Congress about nanotechnology in brain treatment research
5. Study raises questions about use of anti-epilepsy drugs in newborns
6. Fruit flies provide new knowledge about uninhibited cell growth
7. Analysis raises atmospheric, ecologic and economic doubts about forest bioenergy
8. Whats in a surname? New study explores what the evolution of names reveals about China
9. Consumers need simple, concise messages about benefits of phytonutrients
10. Expedition to undersea mountain yields new information about sub-seafloor structure
11. New discoveries about brain-hand connection sought to improve therapies, treatments, prosthetics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/6/2014)... TALLAHASSEE, Fla. -- A groundbreaking paper from a team ... better understanding of how plants could adapt to and ... The research, published in the latest issue of the ... how chromatin (the complex of DNA and proteins) is ... material, so that some genes are turned on and ...
(Date:11/6/2014)... Baltimore, MD, November 6, 2014 - Insilico Medicine, ... in aging and age related diseases announced a ... medicine of cancer, Champions Oncology, Inc (OTC: CSBR). ... genomics for personalized medicine, but Champions Oncology,s TumorGraft ... can validate the chemotherapy regimen experimentally generating vast ...
(Date:11/5/2014)... Rio de Janeiro, Brazil -Individuals show great diversity in ... importantly, males and females greatly differ in their perceptual ... kinds of smell tests. , Sex differences ... social behaviors and may be connected to one,s perception ... and emotions. Thus, women,s olfactory superiority has been suggested ...
Breaking Biology News(10 mins):Maize analysis yields whole new world of genetic science 2Insilico Medicine, Inc announces research collaboration with Champions Oncology, Inc 2The female nose always knows: Do women have more olfactory neurons? 2
... EUREKA Chairmanship 2009/2010! The conference, hosted and conceptually designed ... be held on July 6-7, 2009, at Maritim Hotel ... heart of the city, only a few steps away ... the current and future opportunities and challenges for Europe,s ...
... used by millions worldwide to effectively lower blood cholesterol ... Sclerosis (MS) patients treated with high daily dosages. ... Institute (MNI), McGill University, demonstrates that statin therapy in ... nervous system. The findings, published in The American ...
... to model in mice because their symptoms are complex ... when transferred to a mouse. The lack of animal ... By strategically altering a protein-making molecule, a mouse was ... feeling and cause paralysis of the arms and legs ...
Cached Biology News:One size does not fit all 2A new mouse model provides insight into genetic neurological disorders 2
(Date:11/18/2014)... SAN BRUNO, Calif. , Nov. 18, 2014 ... is a platinum sponsor of the 10th Annual World Stem ... and regenerative medicine stakeholders. The 2014 World Stem Cell Summit ... San Antonio, Texas . ... the discovery and development of lifesaving cures and therapies, convening ...
(Date:11/18/2014)... Athena Signature Series: Turning Cancer ‘Off’ – ... a professor in the Regulatory Biology Laboratory at the Salk ... points to an “off switch” for drug resistance in cancer. ... local research is making a global impact in the fight ... join host Cheryl K. Goodman, CEO of Social Global Mobile ...
(Date:11/18/2014)... Texas (PRWEB) November 18, 2014 ... Polytetrahydrofuran (PTMEG) Industry is professional and in-depth ... gives Polytetrahydrofuran basic information, including its definition, ... also industry outline. This exploration covers the ... and worldwide industry examination covering macroeconomic environment ...
(Date:11/18/2014)... 2014  Great Basin Scientific, Inc. (NASDAQ: GBSN ... will host a conference call and webcast to provide an ... Nov. 20, at 4:30 pm EST time. "We ... Company,s recent IPO and would like to provide our investors ... Ryan Ashton , President and Chief Executive Officer of Great ...
Breaking Biology Technology:Cord Blood Registry Sponsors 2014 World Stem Cell Summit 2Cord Blood Registry Sponsors 2014 World Stem Cell Summit 3PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 2PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 3Great Basin Scientific Announces Conference Call to Provide Update on Corporate Progress 2
... Ambulance Established in Monterrey, MONTERREY, Mexico, and ... Sangui BioTech GmbH,executives jointly opened another wound management ... occasion of a three day working visit. Sangui,BioTech ... Renate Pentzien discussed the next steps of the ...
... approach to a more effective sunscreen , Chronic ... developing skin cancer because UV light from the sun can ... grow in an uncontrolled manner. Hope for a new sunscreen ... been provided by a new study in a mouse model ...
... WALTHAM, Mass., Dec. 3 Thermo Fisher,Scientific Inc. (NYSE: ... today,announced that the China Doping Control Center (CDCC) has ... instrumentation and software for,the testing of athletes at the ... by the Chinese government and the International Olympic,Committee (IOC) ...
Cached Biology Technology:Sangui Partnership Enters a New Phase: 2Sangui Partnership Enters a New Phase: 3Sangui Partnership Enters a New Phase: 4JCI table of contents: Dec. 3, 2007 2JCI table of contents: Dec. 3, 2007 3JCI table of contents: Dec. 3, 2007 4JCI table of contents: Dec. 3, 2007 5JCI table of contents: Dec. 3, 2007 6JCI table of contents: Dec. 3, 2007 7JCI table of contents: Dec. 3, 2007 8JCI table of contents: Dec. 3, 2007 9JCI table of contents: Dec. 3, 2007 10JCI table of contents: Dec. 3, 2007 11JCI table of contents: Dec. 3, 2007 12JCI table of contents: Dec. 3, 2007 13Thermo Fisher Scientific Selected by China Doping Control Center to Supply Testing Instrumentation for the 2008 Olympic Games in Beijing 2Thermo Fisher Scientific Selected by China Doping Control Center to Supply Testing Instrumentation for the 2008 Olympic Games in Beijing 3Thermo Fisher Scientific Selected by China Doping Control Center to Supply Testing Instrumentation for the 2008 Olympic Games in Beijing 4
Alexa Fluor 647 anti-mouse Qa-2...
... 100 IS System is ideal for developing ... reagents. This system contains the new, improved, ... Luminex. The user can design specific templates ... system has fully integrated graphing and data ...
Mouse monoclonal [0.T.81] to Lac1 ( Abpromise for all tested applications). Antigen: Recombinant TrpE fusion protein containing full length E. coli Lac1....
... Sweep- based acquision and analysis ... response type applications. Contains powerful ... flexible analysis functions including automated ... plotting. Also includes many electrophysiology ...
Biology Products: