Deep Martian Geology

  • Thread starter BillTre
  • Start date
  • #1
BillTre
Science Advisor
Gold Member
2020 Award
1,757
4,395
Summary:
NASA's Insight lander has been on Mars for 2 years.
Its geological sensors indicate Mars has a thinner than expected crust, a cooler then expected mantle, and a large liquid core.
I have long been intrigued about what's going on inside Mars.
It shows signs of having had a very dynamic past, huge impact craters, huge volcanoes, massive systems of fissures and valleys.
Some think that it went through a period of plate tectonics and had a geological dynamo that generated a global magnetic field protecting its atmosphere from erosion due to the solar wind.

Science magazine news article here.

The results, some debuting this month at an online meeting of the American Geophysical Union (AGU), show the planet’s crust is surprisingly thin, its mantle cooler than expected, and its large iron core still molten. The findings suggest that in its infancy, Mars efficiently shed heat—perhaps through a pattern of upwelling mantle rock and subducting crust similar to plate tectonics on Earth. “This may be evidence for a far more dynamic crust formation in Mars’s early days,” says Stephen Mojzsis, a planetary scientist at the University of Colorado, Boulder, who is unaffiliated with the mission.

Screen Shot 2020-12-16 at 4.16.43 PM.png


On Earth, a geological dynamo and plate tectonics (along with an alternation of the magnetic field) results in a pattern of stripes in the crust as new crust is exuded where the new crust is generated as the crust spreads apart.

This was found on Mars several years ago:

Screen Shot 2020-12-16 at 5.49.42 PM.png
 
  • Like
Likes davenn, jim mcnamara, Klystron and 2 others

Answers and Replies

Related Threads on Deep Martian Geology

  • Last Post
Replies
10
Views
586
  • Last Post
Replies
6
Views
7K
  • Last Post
2
Replies
28
Views
10K
  • Last Post
Replies
4
Views
7K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
341
  • Last Post
Replies
6
Views
8K
  • Last Post
Replies
9
Views
24K
Replies
2
Views
5K
D
  • Last Post
Replies
3
Views
5K
Top