• HOME
  • AWARDS
  • Search
  • Help
Current time: 30-07-2018, 02:13 AM
Hello There, Guest! ( Login — Register )
› TIME PASS ZONE › NEWS & KNOWLEDGE v
« Previous 1 ..... 3 4 5 6 7 8 9 ..... 25 Next »

World News Asteroid impact on volcanoes led to mass extinction on Earth

Verify your Membership Click Here

Thread Modes
World News Asteroid impact on volcanoes led to mass extinction on Earth
urpussysucker Offline
Princess Bee
*******
Supporter of en.roksbi.ruMost Number of Threads
Joined: 05 Aug 2014
Reputation: 4,383


Posts: 81,012
Threads: 4,890

Likes Got: 18,876
Likes Given: 18,676


db Rs: Rs 2,328
#1
03-10-2015, 11:24 PM
Asteroid impact on volcanoes led to mass extinction on Earth
New York, Oct 2 (IANS) Geologists from the University of Berkeley have unearthed compelling evidence that an asteroid impact on Earth 66 million years ago accelerated the eruptions of volcanoes in Deccan Traps in west-central India for thousands of years.

This double whammy - huge asteroid impact and erupting volcanoes - caused the extinction of many land and marine animals, including the dinosaurs, the team noted.

Deccan Traps are a large province located on the Deccan plateau of west-central India and one of the largest volcanic features on Earth.

The new evidence includes the most accurate dates yet for the volcanic eruptions before and after the impact.

The new dates showed that the Deccan Traps lava flows, which at the time were erupting at a slower pace, doubled in output within 50,000 years of the asteroid or comet impact that is thought to have initiated the last mass extinction on Earth.

Both the impact and the volcanism would have blanketed the planet with dust and noxious fumes, drastically changing the climate and sending many species to an early grave.

"Based on our dating of the lavas, we can be pretty certain that the volcanism and the impact occurred within 50,000 years of the extinction," explained lead researcher Paul Renne, professor of earth and planetary science and director of the Berkeley Geochronology Centre.

The geologists argue that the impact abruptly changed the volcanoes' plumbing system which produced major changes in the chemistry and frequency of the eruptions.

For the study, the team last year collected lava samples from throughout the Deccan Traps east of Mumbai, sampling flows from near the beginning, several hundred thousand years before the extinction and near the end.

High-precision isotope dating technology allowed them to establish the chronology of the flows and the rate of flow over time.

In the paper, they describe major changes in the Deccan Traps volcanism, which was probably "bubbling along happily, continuously and relatively slowly" before the extinction.

After the asteroid impact, the eruption rate more than doubled and the volcanism became more punctuated, with more voluminous lava flows interspersed with long periods of quiet.

According to the authors, a large nearby earthquake of a magnitude 8, 9 or 10 could also have reignited the Deccan Trap flows.

In fact, large quakes may have rattled underground magma chambers and ignited eruptions throughout Earth's history.

The team described the findings in the journal Science.
Find
Reply


« Next Oldest | Next Newest »


Possibly Related Threads...
Thread Author Replies Views Last Post
Indian News  Mrs India Earth 2016 winners crowned in national capital urpussysucker 0 1,240 06-10-2016, 12:22 AM
Last Post: urpussysucker
World News  Space station crew back on Earth after record U.S. spaceflight urpussysucker 0 1,274 02-03-2016, 01:51 PM
Last Post: urpussysucker
Tech News  Nasa starts new programme to protect Earth from asteroids, comets Joyboy32 0 1,198 19-01-2016, 09:05 PM
Last Post: Joyboy32
World News  SpaceX launches rocket 6 months after accident & lands on Earth safely urpussysucker 0 1,604 22-12-2015, 08:51 PM
Last Post: urpussysucker
World News  Evidence that Earth's first mass extinction was caused by critters not catastrophe rajeshsarhadi 0 1,799 04-09-2015, 12:43 PM
Last Post: rajeshsarhadi
World News  Astrophysicists find supermassive black holes in quasar nearest Earth rajeshsarhadi 0 1,337 28-08-2015, 08:36 AM
Last Post: rajeshsarhadi
Tech News  Destructive electrons streaking into Earth's atmosphere urpussysucker 0 1,088 28-07-2015, 01:03 PM
Last Post: urpussysucker
Tech News  NASA just found 'Earth 2.0' urpussysucker 0 1,403 25-07-2015, 01:59 PM
Last Post: urpussysucker
World News  It's Official: 2014 Was Earth's Hottest Year on Record kishurex-1 0 1,281 18-07-2015, 07:54 PM
Last Post: kishurex-1
Tech News  Earth could well turn into a waterworld urpussysucker 0 1,169 14-07-2015, 04:13 PM
Last Post: urpussysucker

  • View a Printable Version
  • Subscribe to this thread


Best Indian Adult Forum XXX Desi Nude Pics Desi Hot Glamour Pics

  • Contact Us
  • en.roksbi.ru
  • Return to Top
  • Mobile Version
  • RSS Syndication
Current time: 30-07-2018, 02:13 AM Powered By © 2012-2018
Linear Mode
Threaded Mode


suked boobs  best exbii  pakistani gay sex stories  kamapisachi telugu storys  dase khani  vasna hindi sex stories  antarvasna writer  sali sex stories  indian blackmail sex  only telugu sex stories  bollywood sex stori  big navel exbii  free marathi chavat goshti  telugu sex stories pinni tho dengulata  urdu porn story  mummy ko maine choda  ddd boobs pics  blufilm vidio  bhai bahen sexy stories  sexy navel stories  bhai bahan sex story  indian desi aunty hot images  magan munnati olunga  bihar xxx sex  bangali hot sexy  desi bebs  urdu sexy font  puku gula  tamil dirty short stories  telugu dirty stories  hindi font desi stories  sex tulgu  desi sexy aunties photos  mumtaz naked  boobs pressed hard  desi aunty stories  desi school girl video  indian randi pics  filipino erotic stories  desi sex stories hindi font  mummy ko maine choda  kannada sex stores  db wank  gand marwa  desi hijra sex  mother seducing son sex stories  hindi stories in hindi font  malayalam srx stories  tamil sex joke  xxx in gujarati  lonely aunt  simi aur uske bete bharat ka payar maa beta  telugu sex cartoon stories  urdu sexy satories  tamil sx stories  hijab porn pics  1st timesexvideo  dps school sex scandal  aunty nudu  dressed and undressed pictures  gunisha milf hot pis xossip  tamil dirty stories sex  malayalam story hot  cousion bhai ne payas bujayie  telugu dengudu chat  shakila six  eriotic story  sexy stor in hindi  zarina masood galleries  latest tamil sex kathaikal  desi bhabhi ki story  adult bangla choti  urdo sex satore  kashmir xxx videos  andhra aunty puku images