Discussion open for comments: 40Ar/39Ar age constraints on the formation of fluid-rich quartz veins from the NW Rhenohercynian zone (Rursee area, Germany) doi.org/10.5194/gchron…

Discussion open for comments: Further investigations into the accuracy of infrared-radiofluorescence (IR-RF) and its inter-comparison with infrared photoluminescence (IRPL) dating doi.org/10.5194/gchron…

If Earth's 4.51 billion years could be compressed into a single year, on this day plate tectonics could have started. 4.1 to 4.3-billion-year-old zircon crystals found in the Jack Hills region, Australia, could be evidence of some sort of active tectonics...

SAVE THE DATE! 💫 AGeS Virtual Community Symposium 💫 🏆 Wednesday May 7, 2025, 11 am-3 pm ET 🏆 💥 Invited Talks💥 🔬 AGeS project presentations 🔬 🍀 Engage and interact with the geochronology community 🍀 All are invited 😊

I met a traveller from an antique land... 💎 February 24, 2014, a 4.404 billion-year-old zircon crystal from Western Australia’s Jack Hills region is announced to be the oldest known mineral on Earth (with Earth being ~4.51 billion years old) #MineralMonday

AGeS-Grad awardee John M. Brigham just published a paper in Lithos on the temporal and spatial scales of garnet growth during serpentinization, using Belvidere Mountain, Vermont, as a case study. Congrats to John! 🎉 Read all about it below 👇 sciencedirect.com/science/articl…

AGeS-Grad awardee Shanti Penphrase just published a paper in Geology showing that Euro-American farming in the Upper Mississippi eroded soil 8–12× faster than Ice Age glaciers—featured in Science! Congrats, Shanti! 🎉🌽 Read all about it below! 👇 science.org/content/articl…

WEDNESDAY! 💫 AGeS Virtual Community Symposium 💫 🏆 11 am-3 pm ET 🏆 💥 Invited Talks 💥 🔬 AGeS project presentations 🔬 🍀 Engage and interact with the geochronology community 🍀 ☺️ All are invited ☺️ cuboulder.zoom.us/j/95271867802

🧠 Did you know that the AGES geochronology program is now on Instagram? Follow us for a closer look at student research, lab work, field adventures, and all things geochronology! ⛏️🪨🕰️ 📸 instagram.com/agesgeochronol…

Kicking off summer with stunning field scenes from AGeS scholars! 🌍⛰️ 📍Cauca River, Colombia 📍NW Greenland Ice Margin 📍Valles Caldera, NM #GeoChronology #SummerScenes #AGEScholarship

AGeS scholar Isabella Bennett just published in J. Geosci. Educ. on building a program that trains students in research through fieldwork, lab analyses & data interpretation! Congrats, Isabella! 🎉🔬 Read more here 👇 tandfonline.com/doi/full/10.10…

AGeS-scholar Mary Lonsdale just published in Precambrian Research: U–Pb geochronology of the Malokaroy Series (Kazakhstan) constrains the global appearance of vase-shaped microfossils to > 759 million years ago! Congrats, Mary! 🎉🔬 Read more 👇 sciencedirect.com/science/articl…

American Mineralogist: Effects of high-temperature annealing and low-temperature metamictization on Archean zircon: Constraints from U-Pb isotopes, trace elements, and Raman dating Carlos Ribeiro, et al. doi.org/10.2138/am-202…

Potential biosignature on Mars: confirmed. ✔️ After a year of scientific review, we are more sure than ever that our Mars Perseverance's 'Sapphire Canyon' sample could contain signs of ancient microbial life. Learn more about the discovery: go.nasa.gov/46jy4hL

New Research: Exhumation of the Koktokay rare-metal pegmatite group in the China Altai: insights from low-temperature thermochronology of the No. 3 pegmatite and Aler S-type granitic batholith frontiersin.org/articles/10.33… #FrontiersIn #EarthScience

American Mineralogist: In situ Raman spectroscopic investigation on the phase transition of grunerite at high pressures Zhi Zheng, et al. doi.org/10.2138/am-202… Zheng et al. studied grunerite at pressure up to ~23.66 GPa using a diamond anvil cell & in situ Raman spectroscopy.

This article is now free to read through the end of November🔓

American Mineralogist: The transformation of magnesium phosphate minerals at atmospheric conditions: Mechanisms, kinetics, and environmental applications Rebecca Volkmann, Roberts Blukis, Christian Schmidt, Pablo Forjanes, and Liane G. Benning doi.org/10.2138/am-202…