Sunday, May 16, 2021
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Volcanism ruled out in dino extinction debate


Posted on Saturday, 18 January, 2020 | Comment icon 2 comments

Scientists now believe that the asteroid was almost entirely to blame. Image Credit: PD - Pixabay / AzDude
A new study has suggested that it was an asteroid strike, not volcanism, that ultimately wiped out the dinosaurs.
To determine this, Southampton University's Prof Paul Wilson and colleagues analyzed samples of sediment retrieved by drilling deep beneath the North Atlantic seafloor.

Their findings indicated that while there was a period of destructive volcanism at the end of the Cretaceous, it was not responsible for causing the extinction of the dinosaurs.

In all probability, it would have been over and done with long before the asteroid even struck.

"The deep ocean sediments are packed full of these microscopic marine organisms called Foraminifera," said Prof Wilson.

"You get about a thousand of them in a teaspoon of sediment. And we can use their shells to figure out the chemistry of the ocean and its temperature, so we can study in great detail the environmental changes that are occurring in the run-up to the extinction event."
"And what we discovered is that the only way in which we can get our (climate) model simulations to match the observed temperature changes is to have the volcanic emissions of harmful gases done and dusted a couple of hundred thousand years before the impact event."

"We find the impact event is exactly contemporaneous with the extinction."

The asteroid strike itself would have been absolutely devastating.

Immediately upon impact, it would have produced huge tidal waves and massive fires while filling the planet's atmosphere with a deadly cocktail of choking smoke, dust and debris.

In the years that followed, survival for the remaining dinosaurs would have been all but impossible.

Source: BBC News | Comments (2)


Tags: Dinosaurs, Asteroid, Extinction


Recent comments on this story
Comment icon #1 Posted by DanL on 18 January, 2020, 23:56
This is a NEW study???? Someone is a little slow on the draw!
Comment icon #2 Posted by Nnicolette on 20 January, 2020, 6:40
I thought it was concluded that the two go hand in hand... As in a major asteroid strike causes intense volcanism. Isn't that the case?


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6904468
288769
188882

 
Liquid water discovered inside a meteorite
5-16-2021
For the first time, scientists have found liquid water inside a meteorite from the earliest days of the solar system.
Flight crews saw UFOs 'every day for two years'
5-16-2021
A former US Navy pilot has explained how commonplace sightings of UFOs off the east coast actually are.
Can humans breathe through their rectum ?
5-15-2021
A new study has revealed that pigs and other mammals can absorb oxygen through their rear-ends.
Man has incredible ability to sing backwards
5-15-2021
John Sevier Austin possesses the unique ability to talk and even sing backwards with absolute precision.
Stories & Experiences
Mystery 'troll' captured on camera
4-24-2021 | Marsta, Sweden
 
My Grandfather's NDE
4-24-2021 | Oakland, California
 
The voice of something not human
11-17-2020 | Baldwin Hills, Los Angeles
 
Shadow figure demon ?
11-14-2020 | USA
 
Ghost following me
9-18-2020 | Iowa
 
Mysterious glowing cube
8-23-2020 | Alabama
 
Black blob in my room/bed
7-23-2020 | Powell,TN U.S.
 
Transparent levitating ball
7-14-2020 | Santa Rosa, California
 
 
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2021
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ