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Mariek Schmidt

@marschm

Volcanologist Petrologist on Earth and Mars, Professor and Chair of Earth Sciences at Brock University, Canada. Mom of two humans, one cat, one dog

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10.01.2025
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Latest posts by Mariek Schmidt @marschm

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Spring?

27.02.2026 21:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is why all our graduates find jobs in mineral exploration!

23.01.2026 19:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Assistant Professor, Limited Term Appointment, Structural Geology/Geophysics This position is part of the BUFA (Employee Group) Brock University is located on the traditional territory of the Haudenosaunee and Anishinaabe peoples, many of whom continue to live and work here to...

We are hiring a structural geologist at #BrockU in Ontario, Canada. Reach out if you are interested! brocku.wd3.myworkdayjobs.com/en-US/brocku...

19.01.2026 13:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I received a complaint this semester that I required that students read the textbook. I had pop quizzes based on their reading and I allowed hand-written notes.

09.01.2026 00:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Depends on the position, but chemistry implies more hard science

06.01.2026 22:34 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
An Open Letter Regarding LPSC - The Planetary Research Blog

Instead of an LPSC abstract, a few of us posted our concerns about the censorship of the conference at blog.planetary-research.org/2026/01/06/a..., with some suggestions for other conferences you can attend to discuss planetary science. (Definitely shorter than 2 pages 10 pt font, too!)

06.01.2026 15:20 πŸ‘ 20 πŸ” 14 πŸ’¬ 0 πŸ“Œ 0
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I made a marbled loaf!

16.11.2025 03:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

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!

31.10.2025 22:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
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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.

Excellent piece from the Planetary Society highlighting some of the human stories of NASA's workforce losses: www.planetary.org/articles/400...

15.10.2025 16:42 πŸ‘ 28 πŸ” 13 πŸ’¬ 1 πŸ“Œ 0
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Thankful for fall harvest and sunshine enjoyed with family! #canadianthanksgiving

12.10.2025 22:18 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Goldschmidt is in Montreal. Just saying

11.10.2025 01:34 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

My 7-year old son is jumping up and down and chanting for the blue jays

05.10.2025 21:10 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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A true honor to perform β€œAmerican Tune” with #PaulSimon and the incredibly talented students at Juilliard. As I said in the article, I remember first looking at the lyrics of β€œAmerican Tune” and going β€œOh, my God β€” did you write this yesterday?”

22.09.2025 22:33 πŸ‘ 113 πŸ” 32 πŸ’¬ 5 πŸ“Œ 5
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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/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.

10.09.2025 17:03 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
John Brown’s grave

John Brown’s grave

John Brown’s body lies amouldering in his grave. His truth is marching on!

A lesson on abolitionists and truth-tellers and good trouble.

28.08.2025 21:47 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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12.08.2025 12:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Post your last photo of DC to show what a hell-hole it is.

12.08.2025 11:47 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Just finished rereading a favourite book, To Say Nothing of the Dog. And the cat! A fun escape #booksky #penwiper

10.08.2025 00:30 πŸ‘ 9 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Indigo milk cap beauty

22.07.2025 20:06 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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...

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...

22.07.2025 01:55 πŸ‘ 9 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
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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...

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...

22.07.2025 01:55 πŸ‘ 9 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0

We have a plug in Santa Fe that we like a lot - bigger than our old Forrester but we almost never have to buy gas

09.07.2025 23:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Stingray feeding #stingray #zoo #fortwayne

02.07.2025 23:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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 .

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?

05.06.2025 14:00 πŸ‘ 20 πŸ” 6 πŸ’¬ 0 πŸ“Œ 4

Pride mineral display 🌈

02.06.2025 17:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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.

21.05.2025 12:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Just finished reading this to my son! He was skeptical at first, expecting it to be scary, but laughed so hard and now says it’s one of his favourite books.

20.05.2025 22:01 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Sometimes you find a trilobite

18.05.2025 18:11 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Red trillium, Ontario

11.05.2025 21:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Hey there, Jack-in-the-pulpit! These flowers are such fun to photograph and peek inside.

05.05.2025 00:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0