Navigation Links
Seafloor, sea-level, shear zones, subduction, sedimentation, and seismology
Date:1/14/2014

amical origins of seafloor spreading evolution were not available. For ancient times, a fundamental unknown is how seafloor spreading operates before the continents have reached their actual size. This study identifies the mechanisms of seafloor spreading evolution related to the growth of continents, making use of very recent and state-of-the-art 3D spherical dynamic models of convection in the mantle that produce plate-like tectonics. When continents grow, seafloor spreading becomes more active, the production of new seafloor increasing, along with its fluctuations. Because continental freeboard has remained close to its present-day value for two billion years, the results presented in this study reinforce the hypothesis that more than 90% of continental growth is restricted to the Hadean-Archean eons.


Crustal structure in southeastern Egypt: Symmetric thinning of the northern Red Sea rifted margins
Ahmed Hosny, Seismology Department, National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt, ahhosny2000@yahoo.com; and Andrew Nyblade, Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA. Posted online 10 January 2014, http://dx.doi.org/10.1130/G34726.1.

From the abstract: Crustal structure in southeastern Egypt has been investigated to elucidate the nature of crustal thinning across the northern Red Sea. P-wave receiver function modeling for seven stations in southeastern Egypt yields typical Proterozoic crustal thicknesses of 35 to 38 km around Lake Aswan, and thinner crust (25 to 26 km) within 50 km of the Red Sea coast. Vp/Vs ratios are on average 1.78 and indicate an intermediate composition crust. These results, when combined with other estimates of crustal thickness in the region, reveal a symmetric pattern of crustal thickness benea
'/>"/>

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

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Related biology news :

1. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/15/2014)... pneumonia in female mice to an enzyme activated by ... more resistant to respiratory infections than males. Now, an ... to bacterial pneumonia in female mice is linked to ... show that this enzyme is ultimately activated by the ... team, lead by Professor Lester Kobzik at the Harvard ...
(Date:10/15/2014)... Rosenstiel Award for Distinguished Work in Biomedical Science by ... of genomic instability and its implications for the immune ... to win the Rosenstiel Award; the first, Rod McKinnon, ... the Charles A. Janeway Professor of Pediatrics and Professor ... at the Howard Hughes Medical Institute at Boston Children,s ...
(Date:10/14/2014)... discriminating thieves, prostate cancer tumors scavenge and hoard copper ... such avarice may be a fatal weakness. , ... kill prostate cancer cells by delivering a trove of ... diseased cells brimming with the mineral, leaving non-cancer cells ... already commercially available for other uses, could soon be ...
Breaking Biology News(10 mins):Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2Prostate cancer's penchant for copper may be a fatal flaw 2
... issues, 100 percent fruit and vegetable juices do help reduce ... conclusion is the result of a European study designed to ... significant role in reducing risk for both cancer and cardiovascular ... are comparable in their ability to reduce risk compared to ...
... created from poultry feathers may add value to ... environmental problem of plastic waste. , According to ... million tons of non-biodegradable plastic waste ends up ... of biological systems engineering at Virginia Tech, is ...
... to process information more chaotically than has long been ... by scientists at the University of Bonn. The passing ... they show, occur exclusively at the synapses, i.e. the ... that the neurons release their chemical messengers along the ...
Cached Biology News:100 percent juices found as beneficial to health as fruits and vegetables 2Researcher examines polymers created with poultry feathers 2Brain works more chaotically than previously thought 2Brain works more chaotically than previously thought 3
(Date:10/19/2014)... 2014 The report "Chocolate, Cocoa Beans, ... Prices, Geography Trend and Forecast (2011 - 2016)," ... geography and studies the major market drivers, restraints, and ... and Asia. , The global chocolate market is expected ... in 2016 at an estimated CAGR of 2.7% from ...
(Date:10/19/2014)... 19, 2014 According to market ... Points; WLAN Controllers; Wireless gateways)]- Global Advancements, Forecasts ... the global Outdoor Wi-Fi market with analysis and ... MarketsandMarkets also identifies the drivers and the restrains ... trends, opportunities and challenges. , Browse 65 market ...
(Date:10/18/2014)... The report "1,6-Hexanediol Market by Application and ... analyzes the global market on the basis of ... details such as the key drivers, current trends ... Browse 81 Market Data Tables and 29 Figures ... “1,6-Hexanediol Market by Application and by Geography - ...
(Date:10/18/2014)... 18, 2014 The Asia-Pacific Liquid Crystal ... the concerned market in Asia-Pacific with analysis and forecast ... in 2013, and is expected to reach $380.0 million ... to 2018. , Browse through the TOC of the ... of the in-depth analysis provided. This also provides a ...
Breaking Biology Technology:Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3
... Therapeutics Corporation today,announced that Blake M. Paterson M.D., ... in Bioscience Award from the Greater Baltimore Council.,Dr. ... nominees,submitted by businesses, bioscience advocates, higher education,institutions and ... Dr. Paterson has received this award from the ...
... March 18 Caliper Life,Sciences, Inc. (Nasdaq: ... the,Lehman Brothers Global Healthcare Conference in Miami, will ... EDT. Kevin Hrusovsky, President and CEO of,Caliper, will ... The live,webcast can be accessed at, http://cc.talkpoint.com/LEHM002/031808a_jw/default.asp?entity=Caliper . ...
... Three biotech CEOs and,the president of one ... by the Greater Baltimore Committee as winners of ... the 2008 Greater Baltimore Region Bioscience Awards are:, ... E. Askew, President & CEO, CSA,Medical, Inc. Askew,s ...
Cached Biology Technology:Blake M. Paterson MD, CEO and Co-founder of Alba Therapeutics, Wins Greater Baltimore Committee 2008 Leadership in Bioscience Award 2Three CEOs and University President Named Winners of Greater Baltimore Committee's 2008 Baltimore Region Bioscience Awards 2