By Jim Shelton
May 27, 2021
Share this with FacebookShare this with TwitterShare this with LinkedInShare this with EmailPrint this
An assemblage of burrows produced by some of the earliest seafloor-excavating animals; lower Cambrian Chapel Island Formation, Canada. (Photos by Lidya Tarhan)
The ancient burrowers of the seafloor have been getting a bum rap for years.
These prehistoric dirt churners a wide assortment of worms, trilobites, and other animals that lived in Earth’s oceans hundreds of millions of years ago are thought to have played a key role in creating the conditions needed for marine life to flourish. Their activities altered the chemical makeup of the sea itself and the amount of oxygen in the oceans, in a process called bioturbation.
CMS scientists on the bottom (and top) of the world!
The 79°N glacier in Greenland. Credit: Stephen Krisch
May 27, 2021
Written by Tim Conway, Amelia Shevenell and Brad Rosenheim
Melting polar ice sheets play a pivotal role in changing global sea levels, and are expected to contribute to a six-inch rise in Florida sea level by 2030. But melting ice also provides an important and changing supply of nutrients to the oceans around Greenland and Antarctica. The Southern Ocean, which encircles Antarctica, also plays a vital global role in regulating heat, salt, carbon, and nutrient transfer between the oceans and atmosphere (taking up much of the global carbon emissions),
The Apollo Rock –Half-a-Billion Years Before the Appearance of Life an Asteroid Blasted a Piece of Earth to the Moon dailygalaxy.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailygalaxy.com Daily Mail and Mail on Sunday newspapers.
Ideas, Inventions And Innovations
Volcanoes on Mars Could Be Active
Evidence of recent volcanic activity on Mars shows that eruptions could have taken place in the past 50,000 years, according to new study by researchers at the University of Arizona s Lunar and Planetary Laboratory and the Planetary Science Institute.
Most volcanism on the Red Planet occurred between 3 and 4 billion years ago, with smaller eruptions in isolated locations continuing perhaps as recently as 3 million years ago. But, until now, there was no evidence to indicate Mars could still be volcanically active.
Recent explosive volcanic deposit around a fissure of the Cerberus Fossae system.
Active Volcanoes on Mars Could Mean Planet Was Recently Habitable
Recent volcanic activity might have been triggered by a nearby asteroid impact.
Image Credit:
Email
Evidence of recent volcanic activity on Mars shows that eruptions could have taken place in the past 50,000 years, according to new study by researchers at the University of Arizona’s Lunar and Planetary Laboratory and the Planetary Science Institute.
Most volcanism on the Red Planet occurred between 3 and 4 billion years ago, with smaller eruptions in isolated locations continuing perhaps as recently as 3 million years ago. But, until now, there was no evidence to indicate Mars could still be volcanically active.