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Marissa Tremblay

@tremblaymarissa.bsky.social
362 followers 370 following 29 posts

Assistant Professor. Noble gas geochemist. she/her/hers www.eaps.purdue.edu/thermochronology

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Reposted by Marissa Tremblay
Alka Tripathy-Lang @dralkatrip.bsky.social · 26/02/2026
Coulomb 4.0 is here, via @temblorinc.bsky.social! What's this, you ask? It's the latest version of an open-source Matlab program that can help you visualize how stress is transferred when faults rupture. Find out more in this article by the scientists that developed and refined it! ⚒️
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Eos @eos.org · 27/01/2026
NCAR represents what is possible when a nation chooses to invest in science as a public good, writes @carlonimbus.bsky.social of @ucs.org. #SaveNCAR eos.org/opinions/wha...
eos.org
What Americans Lose If Their National Center for Atmospheric Research Is Dismantled - Eos
Five ways dismantling NCAR will cost the American people, and two ways to save it.
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Marissa Tremblay @tremblaymarissa.bsky.social · 26/09/2025
Yesterday, I had the honor of giving my tenure talk to the Purdue EAPS department. I won’t actually find out if I was successful until next spring, but no matter what, I am incredibly grateful to have had the opportunity to be a faculty member here and thoroughly enjoyed the last 6 years. #boilerup
photo of me with my talk title slide
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Reposted by Marissa Tremblay
Eos @eos.org · 31/08/2025
A cadre of iron-rich extraterrestrial particles picked up faint whiffs of our planet’s atmosphere when they fell to Earth millions of years ago.
eos.org
Fossilized Micrometeorites Record Ancient CO2 Levels - Eos
A cadre of iron-rich extraterrestrial particles picked up faint whiffs of our planet’s atmosphere when they fell to Earth millions of years ago.
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Reposted by Marissa Tremblay
EarthScope Consortium @earthscope.org · 07/08/2025
Registration is now open for the 2025 Introduction to the Generic Mapping Tools (GMT) for Geophysics short course! This self-paced, asynchronous course introducing learners to modern GMT is available to complete between September 2–25, 2025. Register by August 28 ➡️ loom.ly/hcbJrIQ
Promotional graphic for a 2025 short course titled "Introduction to the Generic Mapping Tools (GMT) for Geophysics." The course is asynchronous and runs from September 2 to 25, 2025. The background features a topographic map of the Atlantic Ocean and surrounding continents with a red-to-purple gradient overlay. Logos for NSF, NASA, USGS, GAGE, SAGE, and EarthScope Consortium appear at the bottom.
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Reposted by Marissa Tremblay
Mineralogical Society of America @mineralsocamerica.bsky.social · 04/08/2025
Mineral Monday: The Handbook of Mineralogy on MSA’s Website Where can you find quick and handy information on 5,663 minerals, both common and rare? In the Handbook of Mineralogy of course. It is available as a set of hardcover volumes, or on the MSA website (handbookofmineralogy.org).
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Eos @eos.org · 02/08/2025
Through social media, talks, and more, @drwendyrocks.bsky.social shares the joy of understanding our planet with audiences that might otherwise have never taken a second look at a rock. buff.ly/fSaRJCX Read more in our August issue: bit.ly/Eos-Aug2025
buff.ly
Wendy Bohon: Quelling Fears and Sparking Geoscience Joy - Eos
This earthquake enthusiast and science communicator wants you to know that a “whole ecosystem” of scientific careers exists outside of academia.
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Eos @eos.org · 10/07/2025
Turns out, most meteorites come from only a few places in the asteroid belt. This could help scientists understand where to send future asteroid exploration missions. eos.org/articles/a-g... Read more in the July issue of Eos: bit.ly/Eos-Jul2025
eos.org
A Geologic Map of the Asteroid Belt - Eos
Scientists leveraged a global camera network and doorbell cameras to track dozens of meteorites to their asteroid families.
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Marissa Tremblay @tremblaymarissa.bsky.social · 10/07/2025
Fellow Geoscientists! We encourage you to attend the third Gordon Research Conference (GRC) on Geochronology (www.grc.org/geochronolog...). This GRC conference will be held August 17-22, 2025 at Sunday River, Maine. The deadline to apply to attend is July 20, 2025!!
grc.org
2025 Geochronology Conference GRC
The 2025 Gordon Research Conference on Geochronology will be held in Newry, Maine. Apply today to reserve your spot.
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Marissa Tremblay @tremblaymarissa.bsky.social · 08/07/2025
🚨 New paper from the T@P group! 🚨 We performed diffusion experiments on laboratory deformed apatite samples, and demonstrated that the deformation-induced dislocations can create helium diffusion 'sink' like behavior observed in some natural samples. Check it out!
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Marissa Tremblay @tremblaymarissa.bsky.social · 13/06/2025
I am so very proud of Dr. Moshammat (Moe) Mijjum, who successfully defended her Ph.D. on Wednesday and is the first Ph.D. student from our research group at Purdue!!!
Picture of Dr. Moe Mijjum
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Dr. Jennifer Wade @volcanojw.bsky.social · 08/02/2025
Do you want a big overview of NSF, explaining things like the fact that 24% of all federally funded academic fundamental research comes from NSF? And that 94% of its budget goes out the door in grants/awards? Here you go. nsf-gov-resources.nsf.gov/files/Factsh...
An “NSF BY THE NUMBERS” fact sheet screenshot with some facts about “ADVANCING SCIENCE AND ENGINEERING RESEARCH IN THE U.S. AND ABROAD”

-The U.S. National Science Foundation was created by Congress in_ 1950 to continue the U.S. science and technology enterprise began during World War II.
-NSF allocates 94% of its approximately $8.5 billion budget for grants and awards to support research projects, facilities and STEM education.
-NSF funds research in all 50 states and U.S. territories.
-NSF fosters international scientific collaboration on all 7 continents around the globe.
-About 2,000 academic and other private and public institutions across the U.S. conduct NSF-funded research.
-NSF supports 24% of all federally funded academic fundamental research at U.S. colleges and universities.
fundamental research comes from NSF.
- In 2020, NSF received approximately 43,000 research proposals from scientists and engineers and funded about 12,000.
- NSF-funded researchers have received 248 Nobel Prizes.
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Matthew Kirk @microbialmatt.bsky.social · 30/01/2025
A nice tribute in honor of Dr Laura Crossey, who has recently retired. I feel very fortunate to have had her as a mentor and role model! www.nmepscor.org/news-and-eve...
nmepscor.org
Pioneering Geoscientist Professor Laura Crossey Retires from University of New Mexico | New Mexico EPSCoR
After a remarkable four-decade career marked by groundbreaking research, educational leadership, and a commitment to diversity in scientific fields, Professor Laura J. Crossey, a distinguished profess...
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Marissa Tremblay @tremblaymarissa.bsky.social · 15/01/2025
Proud advisor week! PhD student Moe Mijjum had her first, first-author paper published in Meteoritics & Planetary Science, and she's got another accepted paper that should be out soon!
heading of journal paper
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Keir Nichols @cosmokeir.bsky.social · 19/12/2024
🚨New paper just in time for the holidays 🚨 We combine exposure ages, glacial geomorphology, and sea level data to show that this pile of rocks near Thwaites Glacier is a moraine that formed in the Late Holocene (~1.4 ka) when a glacier thickened/advanced tinyurl.com/4sanafnb 🧵
A photo taken from a plane that shows a mountain (Mount Murphy, West Antarctica), moraine, and outcrops of a scoria cone, all of which are surrounded by ice and snow. A small glacier that flows from the flanks of Mount Murphy toward the moraine and scoria cone is highlighted in purple. Arrows show our interpreted ice flow directions.
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Shaun Marcott @shaunmarcott.bsky.social · 21/12/2024
Postdoc in Quaternary Icesheet Modeling. Join our new, joint NSF-NERC project with @chrisdarvill.bsky.social @geomatias.bsky.social and several others jobs.leeds.ac.uk/Vacancy.aspx...
jobs.leeds.ac.uk
Job Opportunity at University of Leeds: Research Fellow in Modelling Quaternary Ice-sheet Evolution
Salary: Grade 7 (£39,105 – £46,485 p.a. depending on experience) This role will be based on the university campus, with scope for it to be undertaken in a hybrid manner. We are also open to discussing...
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Marissa Tremblay @tremblaymarissa.bsky.social · 19/11/2024
Welcome all the Bluesky newcomers 🤗
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Reposted by Marissa Tremblay
Dr. Tripti Bhattacharya @triptychphrases.bsky.social · 20/09/2024
Congratulations to Emily Judd and the entire Phantastic DA team on this temperature reconstruction www.science.org/doi/10.1126/...
science.org
A 485-million-year history of Earth’s surface temperature
A long-term record of global mean surface temperature (GMST) provides critical insight into the dynamical limits of Earth’s climate and the complex feedbacks between temperature and the broader Earth ...
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Marissa Tremblay @tremblaymarissa.bsky.social · 09/09/2024
A happy update: I resubmitted the same paper to another journal, and received FOUR REVIEWS within 1 month of that submission! Thank you to the editor who did the hard work of finding reviewers and to the four individuals who said YES! PS - on the whole they like the paper 🤗
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Reposted by Marissa Tremblay
Greg Tucker @gregtucker.bsky.social · 26/08/2024
So much discovery came from the Joides Resolution. Hopefully NSF will find a way to revitalize the vital window into earth’s past that deep-sea drilling provides (gift link): www.nytimes.com/2024/08/26/s...
nytimes.com
Dismantling the Ship That Drilled for the Ocean’s Deepest Secrets
The JOIDES Resolution, which for decades was key to advancing the understanding of the Earth and its innards, concluded what could be its final scientific expedition.
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Marissa Tremblay @tremblaymarissa.bsky.social · 11/08/2024
When a journal rejects your manuscript two months after you submit it because they were unable to find reviewers 🫠
media.tenor.com
a close up of a man 's face with a blurred background
ALT: a close up of a man 's face with a blurred background
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William Colgan @glacierbytes.bsky.social · 28/07/2024
Hey All! We're looking for a glaciology PhD student at DTU-Space to model the ice flow of the Greenland ice sheet over the past 12,000 years. 👇 efzu.fa.em2.oraclecloud.com/hcmUI/Candid... The CISP team is fun and growing! This call closes 16 August 2024.
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Marissa Tremblay @tremblaymarissa.bsky.social · 13/06/2024
Wow, very sad news to learn today. It was a pleasure getting to work with David on a large collaborative project when I was a PhD student.
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Dr Mark D. Scherz @markscherz.bsky.social · 23/02/2024
The Natural History Museum of Denmark is looking for a new Assistant, Associate, or Full Professor of Geology! Come and join our museum at perhaps the most exciting time in its >300 year history! employment.ku.dk/all-vacancie...
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Jim Metcalf @thermochronic.bsky.social · 11/01/2024
If you are a graduate student in the US and want up to $10,000 to collect geochronology data The AGeS-Grad program deadline is Feb 1st! It's an exceptional program, check out the website for details! www.colorado.edu/program/ages...
colorado.edu
AGeS-Grad
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Erin Biba @erinbiba.bsky.social · 31/12/2023
A three panel cartoon by Tina Mendel of a cat standing next to a 2023 and the final panel is the cat pushing the 2023 off a table.
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Reposted by Marissa Tremblay
Dr. Judith Hubbard @judithgeology.bsky.social · 17/10/2023
On our blog, there are a few posts that present critical analyses of recent earthquake papers. In order to ensure that these posts are open to the scientific community and public, we have removed any paywalls. earthquakeinsights.substack.com/s/more-tecto... 🧪 ⚒️
Headlines showing the four posts being made free-to-read.
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Rowan Martindale @rowanmartindale.bsky.social · 16/10/2023
If you're at #GSA2023, check out Liam Norris's talk: INTER-TOOTH VARIABILITY IN CA STABLE ISOTOPES COMPLICATES DINOSAUR PALEOECOLOGICAL RECONSTRUCTIONS @ GSA Connects He's my rogue dinosaur student 🦖 🦕 🦷 gsa.confex.com/gsa/2023AM/m...
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Marissa Tremblay @tremblaymarissa.bsky.social · 14/10/2023
Being indoctrinated with @ickert.bsky.social
Me dressed like Taylor Swift's 1989 album and Ryan dressed like Taylor Swift's Lover album, at the movie theater.
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Justin Filiberto @planetaryrocks.bsky.social · 12/10/2023
First look at the orex sample from bennu. Such amazing preliminary science of a carbon and water rich rock. Geology ⚒️🧪
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Marissa Tremblay @tremblaymarissa.bsky.social · 11/10/2023
@ickert.bsky.social 👀👀👀
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Matthew Morriss @rockiceandsnow.bsky.social · 05/10/2023
Looking for a tephra chronologist or tephra ID-ing lab that works on ashes collected in the four corners region of the USA. Not looking for U-Pb age, but geochemical correlation ID. Any ideas? Thanks!
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Benjamin Gill @sedgeochem.bsky.social · 22/09/2023
Our group at Virginia Tech is recruiting a Ph.D. student to work on a NASA funded project looking at changes in the environment and biogeochemical cycles between the Cambrian Explosion and Great Ordovician Biodiversification Event. (1/2) ⚒️
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Brenhin Keller @brenhinkeller.bsky.social · 29/09/2023
If you like the K-Pg boundary and/or Bayesian inversions, check out this paper out today in Science by my @dartmouthears.bsky.social MS student Alex Cox!! www.science.org/doi/full/10....
science.org
A Bayesian inversion for emissions and export productivity across the end-Cretaceous boundary
Inverse carbon cycle modeling reveals environmental forcings associated with mass extinction.
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Marissa Tremblay @tremblaymarissa.bsky.social · 02/10/2023
When it rains it pours; I sent out 1 manuscript to coauthors and received 3 coauthor manuscripts to edit within 7 working days. Guess you know where you can find me for the next little while:
Meme of a cat furiously typing on a laptop
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Marissa Tremblay @tremblaymarissa.bsky.social · 29/09/2023
Wow this is super cool!! Will definitely be sharing with folks I think might be interested in the #geoscience community ⚒️
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ghoulzie @gawdz0rz.bsky.social · 29/09/2023
FAT BEAR WEEK VOTING IS OPEN
explore.org
Fat Bear Week 2023 | VOTE
Choose the fattest bear of the year! Some of the largest brown bears on Earth make their home at Brooks River in Katmai National Park, Alaska. Brown bears get fat to survive and Fat Bear Week is an an...
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Marissa Tremblay @tremblaymarissa.bsky.social · 28/09/2023
Today I submitted my first final report for a grant that ended. Feels pretty good! We did some cool science studying the diagenesis of fossil gar scales. TLDR, they aren't great for #geochronology. Manuscript led by my former MS student is forthcoming!
Photograph of a fossil gar scale. The bone component is light brown; the ganoine component is black.
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Marissa Tremblay @tremblaymarissa.bsky.social · 28/09/2023
Oo thanks for the reminder! Ordered ✅
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Marissa Tremblay @tremblaymarissa.bsky.social · 28/09/2023
Why though 😭
Map of US time zones showing how dumb it is that eastern time extends to the western border of Indiana
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Marissa Tremblay @tremblaymarissa.bsky.social · 24/09/2023
Congrats to the #OSIRISREx team!!! You punched 🤜 the asteroid and then you kissed 💋 the Earth!!! Can’t wait to hear about the mass estimate 👀
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Alexandra Witze @alexwitze.bsky.social · 24/09/2023
And the #OSIRISREX samples are on the ground. Here's our story about why that's important and what happens next: www.nature.com/articles/d41...
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Marissa Tremblay @tremblaymarissa.bsky.social · 23/09/2023
Thank you for the invite code, @alisabokulich.bsky.social! Happy to move to this platform 🤗
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