HomeSpace & AstronomyTopographic map shows 3.5 billion-year-old coastline on Mars' northern hemisphere

Topographic map shows 3.5 billion-year-old coastline on Mars’ northern hemisphere

We’re familiar with the dry, dusty landscape that Mars looks like today, but there’s plenty of evidence that the planet once had oceans in the past.

Now, scientists have found strong evidence for a vast ocean on the surface of Mars some 3.5 billion years ago, possibly covering hundreds of thousands of square kilometers.

Although planetary scientists have long believed that Mars was a wetter planet than it is today, the scientific community has been debating whether the northern hemisphere of Mars ever had an ocean.

A Penn State team recently constructed a new topographic map based on a trove of satellite imagery, showing definitive evidence of Mars’ coastline some 3.5 billion years ago.

Mapping waterways by looking at sediment deposited over time, the team found more than 6,500 kilometers of river ridges in the Aeolis Dorsa region that are filled with higher sediment than the surrounding landscape.

The researchers further divided the ridges into 20 systems, suggesting they may have formed from deltas or undersea channel belts, which represent remnants of Mars’ ancient coastline.

The team believes that the Aeolis Dorsa area must have been covered by the ocean, and the sea level has risen significantly.

Rocks were deposited along the basin at such a rapid rate that oceanic remnants are visible in the densest ridge areas on the surface of Mars today.

Since Earth’s ancient sedimentary basins contain information about the planet’s evolving climate, the evolution of life, and more, perhaps Aeolis Dorsa is a good place to start for scientists trying to understand the same on Mars.

Related papers have been published in Journal of Geophysical Research: Planets and Nature Geoscience.

SOURCESpace.com
Mehmet S. Kaya
Mehmet S. Kayahttps://teknonel.com
Mehmet is one of the administrator of Teknonel. As a software developer, he loves to share his knowledge in related topics. He is highly familiar with the editorial process from the inception of an article idea, through the iterative process, publishing, and performance analysis as well as product reviews.

Follow us on Social Media!

12FansLike
15,848FollowersFollow
13FollowersFollow
676SubscribersSubscribe

Related Articles

The Most Important space exploration Missions to watch in 2023

Following this year's milestones such as the launch of the Webb Space Telescope for scientific observation, the completion of China's Tiangong space station, and...

Gravitational waves from alien megaships can be detected across the Milky Way

Whether the earth is the only intelligent species in the universe has always been an unresolved question. After all, human search technology is limited...

2 Deep Ocean exoplanets are discovered by Hubble and Spitzer

The solar system contains planets of various characteristics, but lacks water planets that are almost completely covered by deep oceans. Recently, astronomers analyzed data from...

New exoplanet surprises astronomers: Twice the Density of Earth

Scientists discover Jupiter-sized young exoplanet HD-114082b. The analysis results show that it is not like the two common gas giant planets. Simply put, it...

Explore More Articles

Best 300 - 350 Watt Power Supply Units-min

4 Best 300 – 350 Watt Power Supply Units

0
The power supply provides electrical current to all of the computer components. The power supply unit must have sufficient power to supply the various...
Truck-Sized Asteroid passed 3,600 kilometers closer than many satellites-min

Truck-Sized Asteroid passed 3,600 kilometers closer than many satellites

0
The National Aeronautics and Space Administration (NASA) stated that an asteroid the size of a truck passed over the southern tip of South America...
The world's largest electric boat with a capacity of 2,100 people

The world’s largest electric boat with a capacity of 2,100 people

0
Electric vehicles can help reduce carbon emissions, so if ferries that are larger and use more fuel are electrified, can they further reduce carbon...