@Earth2Pete

🇨🇦Assistant Professor @ErthSciCarleton | PhD @EPS_McGill | Exploring 🌎 history through the sedimentary record

petercrockford.rocks/
Joined May 2019
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  • Followers1.1K
14Media
First student paper! pubs.geoscienceworld.org/gsa…
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New Paper! pnas.org/doi/10.1073/pnas.25…

Chemosymbiotic trophic strategy in an Ediacaran tubular animal | PNAS

Chemosymbiosis may have been a key driver of early animal evolution and diversification. Yet evidence for animal–microbe nutritional partnerships i...

pnas.org
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New Paper! 🚨 nature.com/articles/s43247-0…

Revisiting the greatness of Earth’s great oxidation

Communications Earth & Environment - Advancements in modeling, proxy integration, geochronology, and clarity on the nature of Paleoproterozoic glaciations are essential to improve understanding...

nature.com
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🔥Hot off the press! ❓ How do bacteria get iron when nutrients are scarce and constantly washed away❓ A PriME collective effort reveals—using a new continuous culture device—how bacteria acquire iron under rapid nutrient renewal, beyond #siderophores. pnas.org/doi/10.1073/pnas.25…

Bacterial iron acquisition by Escherichia coli is facilitated by amino acid complexation in a...

In natural environments, bacteria often encounter low concentrations of nutrient mixtures that are continuously replenished by physical processes s...

pnas.org
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Even as demand for geoscientists is growing, researchers say Australia’s universities are having difficulty attracting earth science students and are shuttering programs. scim.ag/4nyEct4

A geoscientist shortage could undermine U.S.-Australian deal on critical minerals

Universities aren’t training the specialists needed to exploit the country’s rich resources

science.org
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Sturtian Barite! pubs.geoscienceworld.org/gsa…
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Congrats to colleagues Hanika Rizo and Jonathan O'Neil! Evidence for Hadean mafic intrusions in the Nuvvuagittuq Greenstone Belt, Canada | Science science.org/doi/10.1126/scie… #Carleton

Evidence for Hadean mafic intrusions in the Nuvvuagittuq Greenstone Belt, Canada

Many questions remain regarding Earth’s earliest crust owing to the rarity of Hadean (>4.03 billion-year-old) rocks and minerals. The Nuvvuagittuq Greenstone Belt (NGB) in Canada may be the only...

science.org
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💥New Paper! Depositional Controls on ∆′17O Signatures of Sedimentary Sulfate - Crockford - 2025 - Geophysical Research Letters - Wiley Online Library agupubs.onlinelibrary.wiley.… Thanks to all of the folks who helped this over the finish line.

Depositional Controls on ∆′17O Signatures of Sedimentary Sulfate

Sulfate triple oxygen isotope signatures are most consistent with terrestrial pyrite oxidation and subsequent dilution Depositional environment must be considered in the translation of sulfate ∆′...

agupubs.onlinelibrary.wiley.com
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Peter Crockford retweeted
CIFAR@CIFAR_News22 May 2025
➕ Peter Crockford (@Earth2Pete), Melisa Diaz (@EarthMAD) and Oliver Warr (@geollygist) will join the Earth 4D: Subsurface Science & Exploration program. cifar.ca/cifarnews/2025/05/2…
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A regional nuclear conflict would compromise global food security | PNAS pnas.org/doi/10.1073/pnas.19…

A regional nuclear conflict would compromise global food security | PNAS

A limited nuclear war between India and Pakistan could ignite fires large enough to emit more than 5 Tg of soot into the stratosphere. Climate mode...

pnas.org
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New Paper! nature.com/articles/s41467-0…

Marine sulphate captures a Paleozoic transition to a modern terrestrial weathering environment

Nature Communications - Ancient sulfate mineral compositions reflect an increase in Earth’s oxidation state ~400 million years ago, likely including an increase in atmospheric oxygen levels...

nature.com
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I am extremely honoured to have been awarded a 2025 Sloan Fellowship. A huge thank you to the Sloan foundation for their support and to my mentors for getting me here.
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🎉Congrats to the 126 early-career scientists who have been awarded a Sloan Research Fellowship this year! These exceptional scholars are drawn from 51 institutions across the US and Canada, and represent the next generation of groundbreaking researchers. sloan.org/fellowships/2025-F…
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should I even bother with earthquakes anymore does anyone even care
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Peter Crockford retweeted
Ichiko Sugiyama@FerrousChiko19 Dec 2024
🚨New paper alert‼️🚨Riss’s awesome paper is out now on “High metabolic zinc demand within native Amundsen and Ross sea phytoplankton communities determined by stable isotope uptake rate measurements.” Check it out here 👇👀 #zinc #oceanography #biogeochemistry
Biogeosciences@EGU_BioGeo19 Dec 2024
New research article: High metabolic zinc demand within native Amundsen and Ross sea phytoplankton communities determined by stable isotope uptake rate measurements doi.org/10.5194/bg-21-5685-2…

High metabolic zinc demand within native Amundsen and Ross sea phytoplankton communities determined...

Abstract. Zinc (Zn) is an essential micronutrient for most eukaryotic phytoplankton. Zn uptake by phytoplankton within the euphotic zone results in nutrient-like dissolved Zn (dZn) profiles with a...

bg.copernicus.org
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Peter Crockford retweeted
Ichiko Sugiyama@FerrousChiko5 Dec 2024
🚨New paper alert🚨Review paper on “The history of Earth’s sulfur cycle” is out now @NatRevEarthEnv ! Link here: rdcu.be/d2vpe ! #sulfur #earthhistory #geology #biogeochemistry
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The number of cells in living things exceeds the estimated number of sand grains on Earth by a factor of a trillion. It’s 1 million times larger than all the stars in the universe. #ScienceMagArchives bit.ly/3BVKQHQ
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Peter Crockford retweeted
Ichiko Sugiyama@FerrousChiko25 Oct 2024
🚨Paper alert🚨Finally published my paper titled,”Long-term interaction of metals and phosphate with ferrihydrite in artificial seawater and implications for past and present environments.” Link here: sciencedirect.com/science/ar…. (1/3)
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New paper by Santos et al. Here we explored evolving conditions out of the Marinoan Snowball Earth through Brazilian seds. enjoy! authors.elsevier.com/a/1jx1j…
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Peter Crockford retweeted
Ichiko Sugiyama@FerrousChiko14 Oct 2024
I love Banff and I love this conference! Highly recommend!
Konhauser Geobiology@KonhauserGeobio14 Oct 2024
This view could be yours next summer at #Geobiology2025 taking place at the heart of the Rockies. Register before Dec 31st for early bird prices! 🦕🦠🗻📈
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