HOME >> BIOLOGY >> NEWS
International scientists probe unsolved puzzles of the Earth and beyond at "Earth System Processes"

ddress the geological debate about whether or not the early Earth behaved the same way as at present, with plate tectonics. Using evidence from Venus, Ghail will explain that the early Earth did not have modern plate tectonics, but did have something that looked similar to it, which explains the confusing evidence from the geological record. He will further argue that since this situation is unstable on Venus today (i.e., every so often Venus undergoes a cataclysmic resurfacing), early Earth did the same.

Grant M. Young, Department of Earth Sciences at the University of Western Ontario, explores the role of plate tectonics in bringing about dramatic climate oscillations, changes in the atmosphere and hydrosphere, and setting the stage for the "explosive" evolution of life in the Cambrian. The Proterozoic eon began and ended with unbelievable climatic changes--ancient sedimentary rocks bear silent testimony to severe glaciations on every continent. The cause of these glaciations remains one of the great unanswered questions of science, but one possibility is that they were induced by plate tectonic processes. Following continental collisions, enhanced physical and chemical breakdown of minerals from resulting mountainous land-masses would have resulted in removal of CO2 from the atmosphere, and climatic cooling. The glaciations appear to be interspersed with warm climatic episodes, when atmospheric CO2 (from volcanic eruptions) built up again because during glaciations, weathering processes are inhibited.

James C. Zachos, of the Earth Sciences Department at UCLA, notes that the current warming of global climate may not be unprecedented in terms of rate and magnitude. Some 55 mya, Earth's atmosphere and oceans warmed by more than 6C in a period of less than 20 kyrs. Geochemical evidence suggests that the warming was caused by the release of a massive quantity of methane from the destabilization of marine clathrates (frozen water and methane) in several short
'"/>

Contact: Ann Cairns
acairns@geosociety.org
303-447-2020 x 1156
Geological Society of America
24-May-2001


Page: 1 2 3 4 5 6 7 8 9

Related biology news :

1. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
2. USAID, Conservation International & Starbucks launch Conservation Coffee Alliance in Central America
3. ConocoPhillips & Conservation International launch Biodiversity Action Plan in Venezuela
4. A room with a view for the International Space Station: Completion of the cupola observation module
5. International symposium on nutritional genomics
6. First International Scientific Conference on Childhood Leukaemia
7. 1st International Conference on Cell Therapy for Cardiovascular Disease
8. International research conferences at the Villa Vigoni
9. Conservation International & SC Johnson invest in Ecuadors rainforest to offset climate impacts
10. STN International launches Derwent World Patents Index First View
11. Media invited to attend International Society For Heart & Lung Transplantation meeting April 21-24

Post Your Comments:
(Date:6/23/2015)...   Valencell, a leader in performance ... recent study that illustrates its PerformTek biometric technology ... In a study conducted at Valencell,s Biometric Lab, ... Apple Watch against a chest strap – the ... The study demonstrated that Valencell,s biometric technology delivers ...
(Date:6/18/2015)... 2015 This report analyzes the worldwide markets ... Product Segments, which includes Immunoassay Analyzers and Reagents: Enzyme ... Immunoassay Systems, and Nephelometric Immunoassay Systems. The report provides ... , Japan , ... Latin America , and Rest of World. ...
(Date:6/17/2015)... HILDEN , Deutschland und GERMANTOWN, Maryland ... Investigator ®   Produktlinie mit ... QIAGEN N.V. (NASDAQ: QGEN ; Frankfurt Prime ... neue STR-Testkits der Produktlinie Investigator ... DNA-Spuren in den Markt eingeführt. Die neuen Kits zur ...
Breaking Biology News(10 mins):Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3Global Immunoassay Systems Market 2Global Immunoassay Systems Market 3Global Immunoassay Systems Market 4Global Immunoassay Systems Market 5Global Immunoassay Systems Market 6Global Immunoassay Systems Market 7Global Immunoassay Systems Market 8Global Immunoassay Systems Market 9Global Immunoassay Systems Market 10Global Immunoassay Systems Market 11Global Immunoassay Systems Market 12Global Immunoassay Systems Market 13Global Immunoassay Systems Market 14Global Immunoassay Systems Market 15Global Immunoassay Systems Market 16Global Immunoassay Systems Market 17Global Immunoassay Systems Market 18Global Immunoassay Systems Market 19Global Immunoassay Systems Market 20Global Immunoassay Systems Market 21Global Immunoassay Systems Market 22Global Immunoassay Systems Market 23Global Immunoassay Systems Market 24Global Immunoassay Systems Market 25Global Immunoassay Systems Market 26Global Immunoassay Systems Market 27Global Immunoassay Systems Market 28Global Immunoassay Systems Market 29QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6
(Date:7/2/2015)... ... , ... Cuvettes have been used in countless labs for decades. In the past, people ... As expected, this was a daunting and tiring process looking at endless data tables ... able to navigate the complex catalog structure. , Now thanks to FireflySci, scientists are throwing ...
(Date:7/2/2015)... ... July 02, 2015 , ... In’Tech Medical ... instruments in Orthopedics, announced today the acquisition of Turner Medical, Inc ., ... of surgical instruments to the Spine Industry. The acquisition of Turner Medical ideally ...
(Date:7/1/2015)... India , July 1, 2015  Strand Life ... generation sequencing technology to empower cancer care, today announced ... chief executive officer. In his expanded role as now ... strategy, business expansion and worldwide operations effective immediately.  Dr. ... chairman and CEO since its founding in 2000, will ...
(Date:7/1/2015)... , July 1, 2015 InferMed ... technology will ... evidence-based clinical s olutions suite   ... and medical information products and services, announced today the acquisition ... decision support (CDS) technology company. InferMed,s Arezzo technology ...
Breaking Biology Technology:New Cuvette E-Commerce Website Launched by FireflySci 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 3Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 2Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 2Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 3Elsevier Acquires InferMed, Provider of Clinical Decision Support Technology 4
Cached News: