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

bursts. What remains unknown is why marine clathrates, which are common today, would suddenly destabilize 55 mya. Zachos presents geochemical evidence from deep sea sediments that indicates the event was preceded by slow warming of the ocean, which served as a trigger for destabilizing the clathrates.

A poster presentation by Jzsef Plfy, Institut fr Palontologie at the Museum fr Naturkunde in Hungary, was recently announced in a New York Times online article, "Clues to a Meteor That Aided Dinosaurs." Among the five largest extinctions documented in the fossil record, only the end-Triassic (200 million years ago) has not been previously linked to changes within the global carbon cycle. Study of rocks of that age in Hungary suggests that this extinction is also associated with environmental perturbations that are reflected in anomalous carbon isotope ratios. One scenario consistent with these results is that short-term, intensive volcanism of the Central Atlantic Magmatic Province triggered environmental changes and led to a biological crisis. Effects of volcanism at a magnitude only rarely experienced in Earth history may be similar to the current, man-made global change which also seems to drive scores of species to extinction.

Lawrence H. Tanner, Geography and Geosciences at Bloomsburg University, takes a look at scientists' ability to test various hypotheses for the cause of large-scale extinction events of the past. The Triassic-Jurassic boundary extinction event is one of the "big five" mass extinctions of the Phanerozoic Eon. The current favorite theory to explain this event is that eruptions of flood basalts that constituted the Central Atlantic Magmatic Province released CO2 or SO2 aerosols. This, in turn, caused intense global warming (from the former) or cooling (the latter). New data on the isotopic composition of fossil soils of Late Triassic and Early Jurassic age fails to find evidence of any change in the CO2 composition of the atmosphere
'"/>

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:
*Name:
*Comment:
*Email:


(Date:4/13/2017)... India , April 13, 2017 According to ... Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, ... MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 Billion ... Growth Rate (CAGR) of 17.3%. ... MarketsandMarkets ...
(Date:4/6/2017)... LONDON , April 6, 2017 ... Control, RFID, ANPR, Document Readers, by End-Use (Transportation & ... Energy Facility, Oil, Gas & Fossil Generation Facility, Nuclear ... Healthcare, Educational, Other) Are you looking for ... Authentication sector? ...
(Date:4/3/2017)... , April 3, 2017  Data ... precision engineering platform, detected a statistically significant ... product prior to treatment and objective response ... the potential to predict whether cancer patients ... to treatment, as well as to improve ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ... any gene in its endogenous context, enabling overexpression experiments and avoiding the use ... with small RNA guides is transformative for performing systematic gain-of-function studies. , ...
(Date:10/11/2017)... ... 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for its 4th ... in San Francisco, CA. The Summit brings together current and former FDA office bearers, ... and government officials from around the world to address key issues in device compliance, ...
(Date:10/11/2017)... INDIANAPOLIS , Oct. 11, 2017  VMS BioMarketing, a ... of a nationwide oncology Clinical Nurse Educator (CNE) network, which ... growing need for communication among health care professionals to enhance ... physicians, nurses, office staff, and other health care professionals to ... for breast cancer. ...
(Date:10/11/2017)... ... , ... Disappearing forests and increased emissions are the main causes of the ... Especially those living in larger cities are affected by air pollution related diseases. , ... pollution-affected countries globally - decided to take action. , “I knew I had to ...
Breaking Biology Technology:
Cached News: