Navigation Links
Poisonous Gas Caused Mass Extinction

The largest ever mass extinction on earth may have been triggered by poisonous volcanic gas which erupted in Siberia 250 million years ago // , according to a new research. This must have happened before dinosaurs came into existence, towards the Permian era's end, when over two-thirds of amphibians and reptiles were wiped out.

Possibilities like a deep sea methane release, an asteroid hitting the earth, or a greenhouse effect were contemplated by scientists as reasons for the mass extinction.

According to Discovery News, the eruption was the earth's biggest outpouring as the crust split and torrents of lava were released. They covered vast swaths of land in present-day Siberia and created the Siberian Traps, a large area of igneous rocks around the city of Tura.

New evidence for the volcanic gas hypothesis comes from a unique set of molecules preserved in rocks from the Dolomite mountains in Italy. Dating from the time of the extinction, the molecules are the remains of polysaccharides, large sugar-based structures common in plants and soil. The chemistry of the rocks revealed that although the polysaccharides are remains of marine sediments, they are derived from land, supporting the theory that a massive soil erosion resulting from destruction of land vegetation caused them to end up in the sea.

The excessive supply of soil materials to the oceans provides a direct link between terrestrial and marine ecological crises, suggesting that the ecosystem collapse on land could have contributed to the end-Permian marine extinctions.

The terrestrial ecosystem was the first to suffer. The continent-wide nature of the event implies that it was caused by something in the atmosphere, Sephton said. The soil crisis could have caused a worldwide expanse of uninhabitable low-oxygen conditions in shallow marine waters, a condition similar to the oxygen-depleted waters found today in the Gulf of Mexico's dead zone, said the researchers.

Edited (ANI)
'"/>




Related medicine news :

1. Poisonous Parkinsons molecule discovered
2. Caution: Apricot Seeds May Be Poisonous
3. Hong Kong Citizens Fear over Poisonous Vegetables in Local Markets
4. Investigators Find Poisonous Chemicals In Four More Drugs In China
5. Lakhs of Indians Exposed to High Levels of Poisonous Gases
6. Four of Family Died After Consuming Poisonous Mushrooms
7. Lead With a Poisonous Electron Shield
8. Antibiotics Dangerous for Diarrhoea in Children Caused by E.Coli
9. Albendazole Effective In Reducing Seizures Caused By A Common Parasite
10. Birth Defects Caused By Drugs Used For Epilepsy
11. Alzheimers Disease Caused By Insulin Increase
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/5/2016)... ... 05, 2016 , ... In the fourth quarter of 2015, ... the La Valencia Hotel in San Diego, California to discuss changes in the ... most outstanding franchise, walking away with the coveted David Wright Award of Excellence. ...
(Date:2/5/2016)... ... 05, 2016 , ... Pivot Point Consulting, a leading national ... & Services for HIT Implementation Support & Staffing report with an outstanding score ... by healthcare executives, managers and clinicians representing over 4,500 hospitals and 2,500 clinics. ...
(Date:2/5/2016)... (PRWEB) , ... February 05, 2016 , ... Colorize ... from on one drop zone to the next using Colorize's dynamic moving camera. Colorize ... project. This package includes a 3D slideshow environment with 1 to 5 focus points ...
(Date:2/5/2016)... , ... February 05, 2016 , ... Calls Blacklist has ... completely new user interface design and the developer has fixed known bugs within the ... want to on their phone while not consuming any of their device’s battery power ...
(Date:2/4/2016)... (PRWEB) , ... February 04, 2016 , ... ... "It's All About YOU Re-Treat" on February 19-21, 2016, in Southern California ... at Rancho Palos Verdes, California. These 30 professional speakers, including Clinical Psychologist and ...
Breaking Medicine News(10 mins):
(Date:2/4/2016)... , Feb. 4, 2016 For hospitals ... or those already participating in the program, the Health ... referred to as the , Mega-Guidance , could have ... guidance is published in September 2016. Essential ... and Service Marketing , summarizes the Mega-Guidance,s key proposed ...
(Date:2/4/2016)... -- Worldwide Radiology Oncology surgical robot markets are ... systems provide a way to improve traditional open ... systems pinpoint the delivery of radiation precisely, eliminating ... problem previously, limiting the quantity of radiation that ... far beyond what has been available, promising a ...
(Date:2/4/2016)... , Feb. 4, 2016 Wegener ... Global Markets Direct,s, ,Wegener Polyangiitis - Pipeline ... Wegener Polyangiitis,s therapeutic pipeline. This report provides ... Polyangiitis, complete with comparative analysis at various stages, ... (MoA), route of administration (RoA) and molecule type, ...
Breaking Medicine Technology: