Long Lava Flows May Have Taken Years, Causing Global Cooling And Extinctions


WASHINGTON, D.C. - A multidisciplinary group of scientists is challenging the century old theory that long lava flows must be formed by massive, but short lived, volcanic eruptions. Their research, reported in the Journal of Geophysical Research, suggests that some ancient flows of up to 100 miles in length built up gradually over years, rather than quickly in just days. This finding could have broad implications for the study of Earth and nearby planets.

One result of long but slow moving lava flows may have been global cooling caused by continuing emissions of sulphur dioxide. This cooling could have caused many major extinctions during the past 500 million years. For example, a major eruption in the North Atlantic might have wiped out most dinosaurs by eliminating their plant food supply, even before the presumed asteroid impact that finished the job.

The study is not limited to Earth. Lava flows significantly longer than any known on Earth have been observed on Venus, Mars, and the Moon, and their excellent exposure, coupled with improved spacecraft imagery may actually make them easier to study.

The latest findings on long lava flows are reported in the November 10 issue of the Journal of Geophysical Research, published by the American Geophysical Union. A special section of the journal is devoted to follow-up studies developed from an AGU conference at James Cook University in Townsville, Queensland, Australia. The meeting brought together volcanologists working on active flows in various parts of the world, other volcanologists analyzing flood basalt lava flows, planetary geologists, marine geologists, theoreticians, and economic geologists studying ancient ore-bearing lava flows.

The duration of a lava flow affects the amount of sulfur dioxide released into the atmosphere and therefore the degree of global cooling it causes. This cooling effect was noted following the relat

Contact: Harvey Leifert
American Geophysical Union

Page: 1 2

Related biology news :

1. Bog Beetle, Misidentified For 85 Years, Is Discovered At Cornell
2. Discovery Of Mechanism Causing Colon Cancer
3. Killer Whales Have Begun Preying On Sea Otters, Causing Disruption Of Coastal Ecosystems In Western Alaska
4. Research Team Finds Gene Causing Two Types Of Muscular Dystrophy
5. Virus Linked To Causing Enlarged Hearts In Children With Certain Genetic Makeup
6. Ulcer-Causing Bacteria Found In Central Pa. Surface Water
7. Ulcer-Causing Bacteria Also May Be Associated With Heart Disease
8. UCSF Researchers Identify Mutations In Gene Causing Hereditary Form Of Childhood Rickets
9. Eviction From Scum Home Makes Disease-Causing Microbe Vulnerable
10. Scientists Determine 3-D Crystal Structure Of Cancer-Causing Protein
11. Global competition closes Texas sawmills/paper mills

Post Your Comments:

(Date:3/5/2020)... ... March 05, 2020 , ... ... of its Scientific Advisory Board (SAB) comprised of the industry’s key opinion ... cell therapy centers, and private industry. Cytonus is a leading cell-based platform ...
(Date:3/5/2020)... ... March 05, 2020 , ... In September ... The AlphaSTEM Test™ is the first, and still only, available technology that ... that attempt to provide information about the number and quality of therapeutic tissue ...
(Date:3/4/2020)... WOODLANDS, Texas (PRWEB) , ... March 04, 2020 ... ... quality plasmid DNA-based products and services, announced it has been nominated as a ... Industry Excellence (ViE) Awards. This nomination comes as VGXI expedites manufacturing of a ...
Breaking Biology News(10 mins):
(Date:3/27/2020)... (PRWEB) , ... March 25, ... ... announces the opening of its veterinary histopathology laboratory located centrally in the ... clients the ability to work with a highly motivated, independent, professional team ...
(Date:3/19/2020)... ... March 17, 2020 , ... ... agreement with pioneering gene circuit company Senti Biosciences, Inc. (Senti) to accelerate ... other solid tumor indications. The collaboration will leverage RoosterBio’s human mesenchymal stem/stromal ...
(Date:3/13/2020)... ... March 12, 2020 , ... Today, DuPont Nutrition & ... Center (APC), a pioneer in the field of microbiome science, which focuses on ... in human health, based at University College Cork and Teagasc Moorepark. , Representatives ...
(Date:3/10/2020)... (PRWEB) , ... March 10, 2020 , ... Ortho Clinical ... through innovative laboratory solutions, announced its ORTHOTM Sera, ID-MTS, a suite of extended antigen ... transfusion, is cleared to run on ORTHO VISION® and ORTHO VISION® Max in the ...
Breaking Biology Technology:
Cached News: