The Geological Society of America (GSA)

Congrats to Dr. Mahmud Muhammad, a 2022 GSA Grant Recipient! 🌎
His research connects geoscience with Indigenous culture, showing Qwélqwélústen (Mount Meager) was once a kilometer taller.
#GSA #Geoscience #IndigenousKnowledge

Decades of data show how the Xiaolangdi Reservoir has transformed erosion in China’s Lower Yellow River. This study reveals vital insights for sustainable river management.
👉 Read more: geosociety.co/3VGJ2Ja

🌎✨ Adventure is calling—will you answer?

Join expert guides, discover world-class sites, and experience geoscience where it happens—out in the field.

Spots are limited and selling fast, don’t get left behind!
Explore all field trips here: geosociety.co/FieldTrips
#GSAConnects #GSAintheField

🗻 How did the Appalachian Mountains form—and what do they have in common with mountain belts across the Atlantic?

Geologist Cees van Staal connects the tectonic dots in the latest @geologybites.bsky.social episode.

Listen Now: geosociety.co/4gamRo4
#GeologyBites #Geoscience #AppalachianGeology

We’re proud to be at the Annual Technical Conference of the National Association of Black Geoscientists (NABG) in the Green Center at the Colorado School of Mines campus.

Come connect with the GSA team, learn how we support geoscientists & explore opportunities.

#NABG44 #Geoscience #GSAintheField

🌋 Kīlauea is erupting again! Scientists studying the 2018 eruption discovered that Kīlauea’s lava—full of bubbles and crystals—remains low in viscosity. That means lava can flow faster and farther than expected, making monitoring essential.

Read the #Geology study here: geosociety.co/4mWL3wM

September is #NationalPreparednessMonth, a reminder to plan ahead for natural hazards.

Congress is weighing bills to support #geohazard science: earthquake, volcano, landslide & sinkhole programs. GSA's advocating for science to ensure resilience.

Read our position statement: geosociety.co/46gVohb

TONIGHT’S the deadline! 🚨 Want to host an Alumni Night, affinity group social, or informal meet-up at GSA Connects in San Antonio? Space requests close at midnight.

Don’t let this opportunity slip by—the best connections happen outside the session rooms.
🔗 Submit your request: geosociety.co/3TMVJ4s

YouTube video by geosociety GSA Thompson Field Forum 2025 — Cuba

🌍 Earlier this year, geoscientists from around the world joined our Thompson Field Forum in Cuba. These forums showcase what makes geoscience unique—discovering Earth’s processes through the land itself, enriched by cultural exchange and collaboration.

🔗 Watch here: youtube.com/watch?v=gIw0A3EEN6A

510-Ma fossils from North China reveal that some of Earth’s earliest animals built skeletons with cell-controlled organic templates — pushing back the origin of this strategy to the Cambrian explosion.

Read more: geosociety.co/4fD7wwm
#GSAPubs #Paleontology

New #GSABulletin research links volcanism, environment, and marine influence in forming giant karstic bauxite deposits—using Hg and isotope data from China’s largest bauxite belts.

📖 Read more: geosociety.co/41s4S6s
#Geology #Geochemistry #GSAPubs

Did you know Alabama hosts a 5–7 km-wide marine impact crater?

A new #GSABulletin study models the Wetumpka crater’s Late Cretaceous formation—revealing what shaped its unusual rim.

🔗 geosociety.co/45laxfX
#Geology #GSAPubs

Houston, we’ve landed. 🚀

We're at IMAGE ’25 from today until 28 August! Come visit us at Booth #701 to connect with our team, explore opportunities, and see how GSA can support your geoscience journey.

#IMAGE25 #Geoscience #GSAintheField

A new #Geology study suggests the Northern Appalachian Anomaly is a migrating Rayleigh-Taylor instability, sparked by Labrador Sea rifting ~80 Ma—challenging links to the Central Atlantic margin.

Read more: geosociety.co/4lXmbVn
#Geodynamics #GSAPubs

A new #GSABulletin study analyzes 544 biostratigraphic events across 108 sites in the Mississippi Embayment, revealing patterns of Upper Cretaceous sea-level change and faunal turnover.

🔗 geosociety.co/4fqiogL
#Stratigraphy #CretaceousPeriod #GSAPubs

What drives sedimentation—climate or tectonics?

A new #GSABulletin study from Utah’s Fisher Valley shows a shift from climate-driven to tectonic control, tied to the Onion Creek salt diapir.

📖 geosociety.co/3HoDHme
#Geology #Paleoclimate #GSAPubs

What can manganese reveal about ancient oceans?

A new #GSABulletin study links Permian Mn carbonates in South China to deep-water oxygenation driven by tectonics and sea-level change.

🔗 geosociety.co/4lf7jRa
#Geology #Paleoceanography #GSAPubs

The newest edition of the GSA International Newsletter is here! Stay connected with geoscience news, opportunities, and global perspectives from across the international community.

🔗 Read the latest issue now and be sure to subscribe so you never miss an update: geosociety.co/3Jqcxw7

AAPG Core Elements newsletter spotlights Texas ROCKS!—a beautifully illustrated guide by Nathalie Brandes with photography by Paul Brandes. Explore Texas’s geologic history & must-visit sites.

Read the full review: geosociety.co/3UYhGhh
#GSABooks #TexasGeology #TexasROCKS

What shaped massive microbial buildups 500+ million years ago in Texas?

A new #GSABulletin study links sea level shifts, sedimentation, and microbial activity in the Upper Cambrian.

Read more: geosociety.co/4lcHMaY
#Geology #TexasGeology #GSAPubs

Call for Papers!

Is the Sierra Nevada a geologic relic—or reborn? Submit to Geosphere's themed issue on its uplift history and join the debate.

Submit now: geosociety.co/4oF6SCH
Learn more: geosociety.co/4mv9wZH
#Geosphere #Geology #CallForPapers

Just published in #GSABulletin!
Pizzati and colleagues introduce a new, easy-to-use method for calculating 3-D particle sizes from 2-D images—more accurate and compatible with standard tools.

Read more: geosociety.co/45dWF7a
#Geology #GSAPubs

The science draws us in—but the people keep us coming back. Non-Technical Events at #GSAConnects spark new friendships, rekindle old ones & fuel collaboration long after the conference.

🔗 Submit your request by 29 August 2025: geosociety.co/3TMVJ4s

#GSAConnects #Geology #Geoscience #AlumniNight

New from GSA Special Papers! The Virtue of Fieldwork celebrates Cathy Busby’s career with studies spanning volcanology, tectonics, sedimentology & more—from California to Taiwan.

Explore the legacy: geosociety.co/454xIfH
#GSAPubs #Geology

Over 450 explosive eruptions in 400,000 years—central Mexico’s volcanic past is more intense than we thought. 🌋

A new #GSABulletin study uses Lake Chalco sediment to reveal a long-term record near Mexico City.

Read: geosociety.co/3UHuaKa
#Geology #GSAPubs

New from #Geology: The August issue is live!

Explore fossilized horseshoe crab ovaries, a 1 Ga meteorite impact in Scotland, plant-driven arc magmatism, and early Holocene wetness in the U.S. Southwest.

Cover by Amy Gartman.
Read: geosociety.co/4flt6oR
#GSAPubs #Geoscience

Meet GSA’s 2025–26 Science Communication Fellows!

🌎Rachel Phillips, creator of GEO GIRL on YouTube
🌎Rudy Molinek, host of the podcast Under Our Feet

Learn how they’re sharing geoscience with the world: geosociety.co/4lNTOc6

#GSA #SciComm #Geology

Out Now: August Issue of #GSAToday!

Lead article: Multi-agency effort forecasts & mitigates postfire debris flows in Glenwood Canyon, CO—26 in 2021, 3 in 2023, no major injuries.

Plus: GSA Connects 2025 updates, GSA news & Wonders of Geology.

Read now: geosociety.co/4oqnjlV

A new #GSABulletin study uncovers subtle disconformities in the Ohio Shale, revealing gaps shaped by shifting currents and tectonics.

Explore the findings: geosociety.co/4muwobT
#Geology #GSAPubs

How do seismic waves “X-ray” Earth’s interior?

In this #GeologyBites episode, Andreas Fichtner reveals how quakes uncover mantle plumes & deep tectonic processes shaping our planet.

Listen now: geosociety.co/4fkid6I
#Geoscience #Seismology