Sunday, April 11, 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

Sediment cores shine light on Antarctic forests

Posted on Saturday, 4 April, 2020 | Comment icon 21 comments

Antarctica was once very different. Image Credit: CC BY 4.0 J. McKay / Alfred Wegener Institute
It might be a freezing wasteland today, but in the past Antarctica was covered in lush swamps and forests.
Scientists working on the research icebreaker RV Polarstern near the continent's Pine Island Glacier recently obtained sediment cores dating back 90 million years to a time when dinosaurs roamed the land and pterosaurs dominated the skies.

It was also a time when Antarctica saw average temperatures of up to 25 degrees Celsius.

In place of ice and snow, the southernmost continent would have been covered in dense, fertile forests and swamps and was home to a vast array of dinosaurs and other reptiles.

Collected from deep beneath the seafloor, the sediment cores retrieved by the research team contained fine-grained silt and clay as well as the fossil remains of tree roots, pollen and spores.
"If you would go to a forest near you and drill a hole, it would probably look pretty similar," said study lead author and marine geologist Johann Klages.

The findings help to highlight the extent to which Earth's climate has changed over the last few million years and emphasizes that modern global warming is by no means a unique phenomenon.

The sediment samples date back to what is thought to be the warmest period in the last 140 million years during which sea levels were up to 170 meters higher than they are today.

If these conditions were to occur now, most of the world's coastal cities would be totally submerged.

Source: Reuters | Comments (21)

Tags: Antarctica

Recent comments on this story
Comment icon #12 Posted by XenoFish on 4 April, 2020, 23:45
I think the prehistoric world would've been a sight to behold. Equal part beauty and sheer terror.
Comment icon #13 Posted by Piney on 4 April, 2020, 23:46
As a autistic person myself, I wonder the same...
Comment icon #14 Posted by Piney on 4 April, 2020, 23:47
Happens in the womb.
Comment icon #15 Posted by Seti42 on 4 April, 2020, 23:52
Thanks, friend. It's my belief that autism isn't inflicted by a vaccination, injection, etc. It's a thing that is developmental. Actual facts seem to support my beliefs...That's why I have them. If I am wrong, I think scientists (rather than woo-salespeople) will enlighten me. PS: It's also my belief that autistic people are not something to be feared or hated. I know a few, and **** off to people thinking being autistic makes you less of a human.
Comment icon #16 Posted by Piney on 5 April, 2020, 0:13
There is no way that many physical changes in the brain can be madeso late in development. And since mine is a symptom of a chromosomal disorder it happened in the first stages of development.
Comment icon #17 Posted by skookum on 5 April, 2020, 1:27
Crust displacement? This theory always fascinated me. I accept this is most likely justclimate change but could the poles ever receive enough sunlight to get warm? Plus with the Earths 23 degree tilt you have the issue of large periods of time without much sunlight. I understand that even Einstein became interested in the possibility the Earths crust could move as a whole rather than just the plates. I think one theory was if you have enough build up of ice at the poles theweight could cause a slip. Edit: Just had to check I was not being stupid. The Earth got its tilt around 4.5 Billio... [More]
Comment icon #18 Posted by Carnoferox on 5 April, 2020, 3:21
The breakup of Pangea began in the EarlyJurassicc. 200-180Ma, notat 330 Ma in the Carboniferous (not sure where that came from). At 90 Ma in the Late Cretaceous parts of Antarctica werestill locatedfarther north than thepresent, hence the warmer temperatures.
Comment icon #19 Posted by Essan on 5 April, 2020, 8:40
Einstein knew as much about plate tectonics and geology in general as he did about the plot of the 333rd episode of The Simpsons Why do you think trees that shed their leaves and lie dormant for half the year evolved?
Comment icon #20 Posted by Myles on 5 April, 2020, 18:09
You sound like the people who don't wear seat belts because they heard of a person who was killed by the seat belt. It's all an odds thing. I was vaccinated and have not had polio, measles, diphtheria, mumps or type B influenza.
Comment icon #21 Posted by seetheSeeker on 6 April, 2020, 10:33
Would be so amazing to be able to explore all of history as an observer in the after-life. No time/eternity makes you wonder if you can visit ?time? at any point in time.

Please Login or Register to post a comment.

  On the forums
Has 5G achieved what Nikola Tesla could not ?
The 5G network has the potential to realize the dream that Tesla obsessed over more than a century ago.
Monkey plays game of Pong using only its mind
Scientists at Neuralink have made it possible for a monkey to play a computer game just by thinking.
Man freaked out by face in his washing machine
Alex Boardman had been doing his washing when he saw someone inside the machine looking back at him.
Particle is disobeying the known laws of physics
Recent experiments involving muons have blown open a hole in our current understanding of the universe.
Stories & Experiences
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
Grim reaper-like visitation
6-16-2020 | Canada
My monster catfish story
6-15-2020 | Dallas texas

         More stories | Send us your story
Featured Videos
Gallery icon 
NASA studies underwater 'white smoker' vents
Posted 4-17-2020 | 3 comments
Hydrothermal vents on the ocean floor can teach us about possible habitats on other worlds.
10 strange things about our solar system
Posted 3-17-2020 | 0 comments
A look at some of the most mysterious things about our solar system.
Lizzie - Scotland's other loch monster
Posted 3-8-2020 | 0 comments
Amelia Dimoldenberg investigates the Loch Ness Monster's neighbor.
Adam Savage and Spot
Posted 2-14-2020 | 4 comments
Adam Savage tests out Boston Dynamics' impressive Spot robot.
NASA 2020: Are you ready ?
Posted 1-1-2020 | 3 comments
A look at what's coming up in the world of spaceflight this year.
 View: More videos
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 (c) 2001-2021
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ