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Nicole Fernandez-Franzan @nicolefernandez.bsky.social · 13/09/2026

Another Mars-related paper out in JGR: Planets from @agu.org ! What if chlorate, rather than oxygen, drove oxidative weathering on early Mars? Our reactive transport model suggests it can reproduce the widespread clay stratigraphy we observe today. doi.org/10.1029/2025... @eth-eaps.bsky.social

doi.org

The Role of Chlorate‐Driven Oxidative Weathering in Shaping Clay Deposits on Mars

Reactive transport model shows chlorate-driven oxidative weathering on Early Mars reproduces widely observed Martian clay stratigraphy Chlorate oxidation generates Fe(III)-bearing smectites along...

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Nicole Fernandez-Franzan @nicolefernandez.bsky.social · 28/07/2026

We have a new paper out in GRL 📣 We show that chlorate can oxidize aqueous sulfide to form elemental sulfur under low temperature, acidic conditions- highlighting a possible pathway for the native sulfur recently discovered by Curiosity in Gale Crater! agupubs.onlinelibrary.wiley.com/doi/10.1029/...

agupubs.onlinelibrary.wiley.com

Oxidation of Aqueous Sulfide by Chlorate: Implications for Native Sulfur Formation on Mars

Abiotic aqueous oxidation of sulfide by chlorate produces elemental sulfur Elemental sulfur is the main product at low chlorate level (<30 mmol L−1), while sulfate becomes prevalent at higher chl...

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Nicole Fernandez-Franzan @nicolefernandez.bsky.social · 10/07/2026

In the event you’re curious about hypersaline lakes in Western Australia, the role of groundwaters, and what we can learn about Early Martian landscapes from them, then check out our new paper led by Taylor Plattner! It was a fun one to be a part of! agupubs.onlinelibrary.wiley.com/doi/10.1029/...

agupubs.onlinelibrary.wiley.com

Groundwater Connectivity and Buffering in Western Australian Hypersaline Lakes: Implications for Late‐Stage Martian Lacustrine Systems

Across the Yilgarn Craton, lakes are more saline than groundwater; pH and geochemistry vary mainly with paleovalley and geomorphic setting Weathering profiles and mineralogy record acidic-groundw...

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Nicole Fernandez-Franzan @nicolefernandez.bsky.social · 10/07/2026

I’m very excited to announce an open PhD position in the new Geomitigation of Greenhouse Gases Group @eth-eaps.bsky.social ! We are looking for a creative and ambitious candidate who is excited about « cryogenically » low temperature experimental geochemistry 🧊🪨🧪 jobs.ethz.ch/job/view/JOP...

jobs.ethz.ch

PhD Position in Cryogenic Carbonate Mineralization and Carbon Dioxide Fluxes

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Nicole Fernandez-Franzan @nicolefernandez.bsky.social · 01/04/2026

Thrilled by this opportunity to do really fun interdisciplinary research bridging geochemistry and microbiology together to explore biogeochemical cycling in montane groundwaters! 🦠💧🏔️

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Reposted by Nicole Fernandez-Franzan

Ethan Baxter @ethanrockstory.bsky.social · 25/01/2026

⚒️🍎🧪 Stuck at home with the kids in all the snow, ice, and weather? Watch an episode of Every Rock Has A Story! Try this one about increased weathering from STORMS! youtu.be/NWsxE2azGG0 or this one about ICE CORES! youtu.be/hdgLXhILAeI or this one about about ICE! youtu.be/OuAMmHjxBPo

youtu.be

See how scientists determine how water erodes rock! ERHAS Episode 79 w/ Nicole Fernandez

YouTube video by Ethan Baxter's "Every Rock Has A Story"

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