Articles tagged "snowball earth"

snowball earth july 29 2020 2

Snowball Earth events linked to drastic drop in Sun's radiation

Scientists from the Massachusetts Institute of Technology (MIT) suggest that Snowball Earth-- a hypothesis proposing that the planet's surface became entirely frozen at least twice 700 million years ago-- might be linked to dramatic plunges in the amount of...

July 29, 2020

1snowball earth june 12 2020 2

Sand wedges in glacier deposits indicate large seasonal cycle during Marinoan snowball Earth

In the Earth's equatorial regions today, the seasonal cycle of the monthly mean surface air temperature is less than 10 °C (50 °F). However, deep sand wedges discovered near the paleo equator in the Marinoan glaciogenic deposits at 635 million years ago,...

June 14, 2020

LatePermianGlobal

Antarctica and North America were connected more than a billion years ago

An international team of scientists found that the combination of lead isotopes in rocks peeking out of the Antarctic ice is the same as in rocks from a rift that cuts across the United States. Remote Antarctic rocks hold strong new evidence that parts of Antarctica

August 16, 2011