Earth MRI provides critical geoscience data for resources, groundwater, and natural hazards. GSA supports the bipartisan Earth MRI Reauthorization Act and urges continued investment in this vital program. Read GSA’s full letter: geosociety.co/earth-MRI-letter #EarthScience #EarthMRI

We're looking for passionate geoscientists to share authentic stories that celebrate geoscience, showcase research, and highlight opportunities in our field. Apply to be an official GSA Ambassador today: geosociety.co/ambassador

New in #GSABulletin: New U-Pb, Sm-Nd & cooling ages reveal the Siskiyou and Nevadan orogenies were distinct Jurassic events in the Klamath Mountains, with peak metamorphism linked to transcrustal magma transport and slab breakoff. 🔗 geosociety.co/Barnes_et_al Image: Figure 1 from the paper.

GSA Connects 2026 field trips take you beyond the meeting to explore iconic landscapes, world-class outcrops, and active research sites alongside scientists who know them best. Add field trips when you register for the meeting or book separately through the GSA Store: geosociety.co/field-trips

New in #GSABulletin: Machine learning meets deep Earth science By combining seismic velocities and density, researchers predict lithosphere composition—revealing new insights into the South China Block and challenging long-held ideas about the mantle. 🔗 geosociety.co/Yang_et_al26 Image: Fig 10

Behind every grant awarded and researcher recognized are members who choose to serve. Self-nominate for: • Graduate Research Grants Committee • Bromery Award Committee • Research Award Committee 📅 Deadline: 17 August 📅 Terms begin: 1 December Learn more: geosociety.co/serve

A powerful earthquake struck western Colombia early Monday, causing widespread shaking across the region. This is a reminder of the remarkably complex tectonics beneath northwestern South America. Learn more about the geology of this region in this #GSABulletin article: geosociety.co/Leon_et_al

Sign up for a short course to make your GSA Connects 2026 experience even more valuable and bring new ideas back to your lab, classroom, or workplace. Swipe through featured courses, and browse the full list here: geosociety.co/short-courses #GSAConnects2026 #ShortCourses #ProfessionalDevelopment

New #Geology research reports the first evidence of very shallow crustal seismicity (2–6 km depth) along the West Andean Front of central Chile (~32.8°S), providing new insight into the role of flat-slab subduction in forearc tectonics. 🔗 geosociety.co/Pinto_et_al Photo by Abigail Jackson-Gain

Make your GSA Connects 2026 experience more affordable. Apply for a Student Travel Grant to help offset travel expenses: geosociety.co/Travel_Grants Become a Student Volunteer to receive complimentary meeting registration: geosociety.co/volunteer

New in #GSABulletin: What can tiny detrital garnet grains reveal about the geologic evolution of East Antarctica? This study reconstructs the continent’s metamorphic history, showing how garnet preserves key stages of metamorphism. geosociety.co/Verhaert_et_al Image: Fig 2 from the paper.

Mega-Scale Glacial Lineations—streamlined bedforms typically found beneath fast ice streams in Antarctica and Greenland—have now been identified for the first time beneath an outlet glacier in the Alps. Read the #OpenAccess #Geology article: geosociety.co/Verite_et_al Image: Fig 2 from the study

EARTHCACHE: Cedar Park Limestone in Houston, Texas, USA. Discover ancient seas at Houston City Hall. Cedar Park Limestone preserves fossils, ooids, and marine life from nearly 100 million years ago, dating to the Lower Cretaceous. 🧭 Explore more: geosociety.co/GC1MWBC

The geoscience community needs more voices—and yours could be one of them. Become a GSA Ambassador to help us bring Earth science to the masses. Applications are now open—learn more and apply: geosociety.co/ambassador #GSAAmbassador #Geoscience #SciComm

When did one of our early ape relatives live? New #GSABulletin research refines the age of the Middle Miocene Napudet fossil site in Kenya—the home of Nyanzapithecus alesi, an exceptionally preserved infant ape skull. Read more: geosociety.co/Cox_et_al Image: Fig 1 from the paper

What can a passion for geoscience lead to? Clare combined her geology background with her love of reading and writing to build a career in environmental law. Where could your journey lead? Join GSA: geosociety.org/membership. Share your story: geosociety.co/submit-spotlight.

New #GSABulletin research posits that porphyritic cobbles in the Cenomanian Frontier Formation in Bighorn basin (Wyoming, USA) are derived from ca. 92–104 Ma porphyritic intrusions now exposed in the Beartooth Mountains. Read the paper: geosociety.co/Thacker_et_al Image: Figure 14 from the paper.

Do you have research to share? Time is running out—the final abstract submission deadline for GSA Connects 2026 is tomorrow, 6 August, and we don't want you to miss it. Submit your abstract by tomorrow and register by 27 August to lock in early registration rates. 🔎 connects.geosociety.org

Squids are thriving in the modern oceans, but little is known about their past due to their patchy fossil record. New #Geology research provides insight through Cretaceous squid fossils: geosociety.co/Ikegami_et_al Photo courtesy Shin Ikegami

Some of the world's leading voices in geoheritage are joining us virtually for two special Geoheritage Pardee Symposium Webinars following GSA Connects 2026. 📅 Part I - 12 November: geosociety.co/Geoheritage-Webinar-I 📅 Part II - 17 November: geosociety.co/Geoheritage-Webinar-II

Could iron microbialites help reveal past life on Mars? New #GSABulletin research uses Spain’s Río Tinto as a Martian analog to investigate biosignatures—and the challenges of detecting life with rover instruments. geosociety.co/Pei_et_al #Mars #PlanetaryScience Photo by NASA on Unsplash.

Please join us in welcoming Alyssa Pietraszek as GSA's 2026–2027 Science Communication Fellow! The GSA Science Communication Fellowship provides early-career science communicators with hands-on experience while advancing GSA's mission to share geoscience with the world.

Help shape the future of GSA. Self-nominations are now open for the Graduate Research Grants, Bromery Award, and Research Award Committees. Members at all career stages are encouraged to apply. Submit by 17 August 2026. Learn more: geosociety.co/serve

What happens to a riverbed in the quiet stretches between floods? New #Geology research uses flume experiments to show that riverbeds become progressively stronger during the calm periods between floods, influencing erosion during the next flood event: geosociety.co/Kostynick_et_al

Unlike typical earthquakes that rupture in seconds, slow earthquakes unfold over days, weeks, or even months—and scientists have long debated what causes them. New #Geology reveals a potential answer; read the paper: geosociety.co/Chapman_et_al #Earthquakes #SubductionZones

New #Geology research reveals that Pacific seamount volcanism does not follow the biased dated record, but instead records basin-scale plate evolution and lithospheric control. Read paper: geosociety.co/Zhao_et_al #Seamounts #PlateTectonics #MachineLearning #MarineGeology

GSA Connects 2026 doesn't have to start and end at the convention center... Swipe through to preview some of this year's expert-led field trips, and browse the full list on our website. Trips are already starting to fill up, so reserve your spot today! geosociety.co/field-trips

Research published in #Geosphere investigates whether the Cascadia Subduction Zone and the northern San Andreas Fault may sometimes influence one another through stress transfer, potentially leading to clusters of large earthquakes over time. Read the full paper: geosociety.co/Goldfinger_et_al

Featured in Montana Magazine, "Montana Rocks!" is being recognized as "the geology book Montana has always needed." Discover Montana's incredible geologic history with Rob Thomas. Get your copy: geosociety.co/MontanaRocks Read the review: geosociety.co/montana-review

LAST DAY! Submit 2027 GSA Section Meeting proposals for: • geosociety.co/NortheasternSection • geosociety.co/SoutheasternSection • geosociety.co/RockyMountainSection • geosociety.co/CordilleranSection South-Central/North-Central closes 28 August: • geosociety.co/South-Central-North-Central-Section