Mariek Schmidt
@marschm.bsky.social
Volcanologist Petrologist on Earth and Mars, Professor and Chair of Earth Sciences at Brock University, Canada. Mom of two humans, one cat, one dog
I made a marbled loaf!
November 16, 2025 at 3:03 AM
I made a marbled loaf!
By far most common costume is a Blue Jays player. Also, I expect everyone will be done trick or treating by 8. Happy Halloween and Go Jays!
October 31, 2025 at 10:49 PM
By far most common costume is a Blue Jays player. Also, I expect everyone will be done trick or treating by 8. Happy Halloween and Go Jays!
Reposted by Mariek Schmidt
Excellent piece from the Planetary Society highlighting some of the human stories of NASA's workforce losses: www.planetary.org/articles/400...
4,000 gone: Inside NASA’s brain drain
In exclusive interviews, ex-NASA scientists speak out on the impact of the agency's mass departures.
www.planetary.org
October 15, 2025 at 4:42 PM
Excellent piece from the Planetary Society highlighting some of the human stories of NASA's workforce losses: www.planetary.org/articles/400...
Thankful for fall harvest and sunshine enjoyed with family! #canadianthanksgiving
October 12, 2025 at 10:18 PM
Thankful for fall harvest and sunshine enjoyed with family! #canadianthanksgiving
Reposted by Mariek Schmidt
A true honor to perform “American Tune” with #PaulSimon and the incredibly talented students at Juilliard. As I said in the article, I remember first looking at the lyrics of “American Tune” and going “Oh, my God — did you write this yesterday?”
September 22, 2025 at 10:33 PM
A true honor to perform “American Tune” with #PaulSimon and the incredibly talented students at Juilliard. As I said in the article, I remember first looking at the lyrics of “American Tune” and going “Oh, my God — did you write this yesterday?”
www.nature.com/articles/s41... great to see this paper out about potential biosignatures in one of Perseverance’s samples! and it’s making quite a splash! What an amazing discovery and I am lucky to have played a small part.
Redox-driven mineral and organic associations in Jezero Crater, Mars - Nature
A geological, petrographic and geochemical survey of distinctive mudstone and conglomerate outcrops of the Bright Angel formation on Mars reveals textures, chemical and mineral characteristics, and or...
www.nature.com
September 10, 2025 at 5:03 PM
www.nature.com/articles/s41... great to see this paper out about potential biosignatures in one of Perseverance’s samples! and it’s making quite a splash! What an amazing discovery and I am lucky to have played a small part.
John Brown’s body lies amouldering in his grave. His truth is marching on!
A lesson on abolitionists and truth-tellers and good trouble.
A lesson on abolitionists and truth-tellers and good trouble.
August 28, 2025 at 9:47 PM
John Brown’s body lies amouldering in his grave. His truth is marching on!
A lesson on abolitionists and truth-tellers and good trouble.
A lesson on abolitionists and truth-tellers and good trouble.
Reposted by Mariek Schmidt
Post your last photo of DC to show what a hell-hole it is.
August 12, 2025 at 11:47 AM
Post your last photo of DC to show what a hell-hole it is.
Indigo milk cap beauty
July 22, 2025 at 8:06 PM
Indigo milk cap beauty
Reposted by Mariek Schmidt
Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...
Fe-phosphates in Jezero Crater as evidence for an ancient habitable environment on Mars - Nature Communications
The Perseverance rover has made the most definitive identification of Fe-phosphate minerals on Mars to date. High-resolution chemical and textural PIXL analyses suggest they originally formed after vi...
www.nature.com
July 22, 2025 at 1:56 AM
Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...
Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...
Fe-phosphates in Jezero Crater as evidence for an ancient habitable environment on Mars - Nature Communications
The Perseverance rover has made the most definitive identification of Fe-phosphate minerals on Mars to date. High-resolution chemical and textural PIXL analyses suggest they originally formed after vi...
www.nature.com
July 22, 2025 at 1:56 AM
Look at those little blue green minerals! They tell us a lot about the environment where they formed. On Mars! www.nature.com/articles/s41...
July 2, 2025 at 11:25 PM
Reposted by Mariek Schmidt
So, if you enjoy volcanoes and my writing about them, you have options: the Eruptions Newsletter (eruptions.beehiiv.com), the 5 Minute Volcano podcast (5mv.buzzsprout.com) or just follow along here on Bluesky. Who knew you needed all this volcano?
dipper from gravity falls is screaming with his mouth open and his eyes closed .
ALT: dipper from gravity falls is screaming with his mouth open and his eyes closed .
media.tenor.com
June 5, 2025 at 2:00 PM
So, if you enjoy volcanoes and my writing about them, you have options: the Eruptions Newsletter (eruptions.beehiiv.com), the 5 Minute Volcano podcast (5mv.buzzsprout.com) or just follow along here on Bluesky. Who knew you needed all this volcano?
Pride mineral display 🌈
June 2, 2025 at 5:06 PM
Pride mineral display 🌈
www.sciencedirect.com/science/arti... New article by @geochemystery.bsky.social! What might evidence of life on Mars look like? These tuffs in Idaho with putative biosignatures might hold the answer.
May 21, 2025 at 12:44 PM
www.sciencedirect.com/science/arti... New article by @geochemystery.bsky.social! What might evidence of life on Mars look like? These tuffs in Idaho with putative biosignatures might hold the answer.
Sometimes you find a trilobite
May 18, 2025 at 6:11 PM
Sometimes you find a trilobite
Red trillium, Ontario
May 11, 2025 at 9:03 PM
Red trillium, Ontario
Hey there, Jack-in-the-pulpit! These flowers are such fun to photograph and peek inside.
May 5, 2025 at 12:22 AM
Hey there, Jack-in-the-pulpit! These flowers are such fun to photograph and peek inside.
Interviewing a tenure-track candidate as Department Chair today. Wish us both luck!
May 2, 2025 at 11:28 AM
Interviewing a tenure-track candidate as Department Chair today. Wish us both luck!
eos.org/editor-highl... I wrote a highlight for a cool study
Martian Magmas Live Long and Prosper - Eos
The depths, longevity, and potential to generate silicic compositions of magma chambers are linked to crustal temperature, which varies across Mars and over its geological history.
eos.org
April 10, 2025 at 12:42 PM
eos.org/editor-highl... I wrote a highlight for a cool study
Heard but not seen today: owl, turkey, woodpecker, red-winged blackbird, frogs
April 9, 2025 at 8:13 PM
Heard but not seen today: owl, turkey, woodpecker, red-winged blackbird, frogs
Reposted by Mariek Schmidt
Donald Trump’s policies are more than dumb — they’re stupid, according to stupidity researchers
Donald Trump’s policies are more than dumb — they’re stupid, according to stupidity researchers
The actions of the Trump administration on several fronts exhibit scientifically defined features of stupidity of many kinds.
theconversation.com
April 9, 2025 at 12:00 PM
Donald Trump’s policies are more than dumb — they’re stupid, according to stupidity researchers