NEW BOOK: Investigating Paleoenvironments and Provenance in Sedimentary and Metasedimentary Basins: NY, NM, and CT (R.P. Wintsch, P.A. Drzewiecki, K.M. Hobbs). This Field Guide examines sedimentary deposition & provenance in varied settings. Buy now: geosociety.co/Paleoenvironments

Featured Opportunity on the GSA Geoscience Job Board at Southern Methodist University: the inaugural O’Donnell Eminent Endowed Chair in Energy, a tenured full professor position supported by SMU’s new $50 million O’Donnell Energy Initiative. 🔎 Explore the role: geosociety.co/JobBoard

How do you untangle a forearc basin’s history? New GSA Bulletin research by Chuqiao Huang and colleagues develops a chronostratigraphy for the Nanaimo Group, tracing 30+ m.y. of subsidence, sedimentation, and uplift. Read more: geosociety.co/chronostratigraphic

EARTHCACHE: Cueva Saturno (N Cuba) is a karst cenote formed by limestone dissolution and cave collapse. Acidic rain/CO2 groundwater dissolves CaCO3; roof collapse forms sinkholes in the aquifer. Anchialine mixing fresh & saline waters. Explore more: geosociety.co/GC5NDGX

New research in GSA Bulletin identifies the Svartevaeg terrane as a displaced arc fragment within the Canadian Arctic transform system, shedding light on Paleozoic plate-boundary dynamics, sinistral transpression, and terrane accretion across Arctic North America. Read more: geosociety.co/svartevaeg

Romanelli Cave (Italy), a key European Palaeolithic site, preserves traces of human occupation shaped by deep time. New Geosphere research reveals how Cretaceous faults formed the cave’s structural “backbone.” Read more: geosociety.co/cave-evolution Explore the 3D model: geosociety.co/v3geo

New detrital zircon U-Pb age sediment provenance from the Claron Formation, Utah, reveals how Laramide foreland deformation influenced sediment dispersal. Learn more in GSA Bulletin: geosociety.co/laramide Photo by Alex Tye.

For nearly 4 decades, the Karoo Basin shaped End-Permian extinction models. A new GSA Bulletin study led by Robert Gastaldo finds Permian–Triassic vertebrates coexisted, challenging the extinction paradigm. Learn more: geosociety.co/Wapadsberg

Two powerful earthquakes (M7.2 and M7.5) struck northern Venezuela yesterday, causing widespread damage. Our thoughts are with everyone affected. Read this landmark #Geology study to learn more about the broader tectonic context of northern South America: geosociety.co/Colmenares-and-Zoback

GSA’s Scotland field trip explored iconic geologic sites, from Siccar Point to Scotland’s rugged coastlines. Participants experienced the landscapes that shaped modern geology through field learning, discussion, and discovery. Explore GSA Connects 2026 field trips: geosociety.co/field-trips.

What causes mountains to rise in the middle of a continent—far from a plate boundary? New #Geology research tackles this puzzle in Mongolia’s Hangay Mountains, suggesting that foundering of a thickened lithospheric root followed earlier bending of the Mongolian crust: geosociety.co/Ling_et_al

From Neolithic ceremonial landscapes to Iron Age hill forts and prehistoric sites in Edinburgh, GSA’s Scotland geoarchaeology field day explored the powerful links between geology, landscape, and human history. Want to explore geoscience like this? Join a GSA field trip: geosociety.co/field-trips

The global geoscience community is heading to Denver this October—don’t miss your chance to be part of it at GSA Connects 2026. ⏰ Deadlines: • Abstract Submission: 6 August — geosociety.co/ConnectsAbstracts • Early Registration: 27 August — connects.geosociety.org/register

New research from Scripps Institution of Oceanography, published in Geology, suggests a relict slab fragment may explain unusual adakite lavas in Baja California—offering new clues about subduction, tectonic history, and element transfer. Read more by James Muller: geosociety.co/Enigmatic

What sparked plate tectonics on Earth—and what might eventually stop it? New research shows how mantle cooling and continental growth shaped the start, evolution, and future end of plate tectonics. Explore the study: geosociety.co/mantle Image: Figure 6 from the paper.

How do wildfire landscapes recover? And how does that change debris-flow risk over time? A new study in #Geosphere introduces an improved, satellite-based method for tracking how postfire debris-flow hazards evolve as vegetation regrows. Read paper: geosociety.co/Graber_et_al#Geosphere #WildfireRecovery

How do radial faults form around salt diapirs—and why does it matter? A new GSA Bulletin study from Brazil’s Espírito Santo Basin shows how stress controls fault evolution, revealing where fluids move and where hydrocarbons, carbon, and energy may be stored. Read more: geosociety.co/evolution

The 2026 GSA Penrose Conference, Defining the Future of Timescale Calibration, brought geoscientists to Iowa City to launch discussions supporting the Geologic Time Scale 2030 (GTS2030). Explore more: geosociety.org/events

Planning to attend GSA Connects 2026? LMIC registration discounts are back to support global participation in Denver: 50% off for upper-middle-income countries and 75% off for lower-middle & low-income countries. Apply for your code: geosociety.co/LMIC-Discount

How did ancient landscapes shape animal migration? A new *GSA Bulletin* study suggests high elevations in western Anatolia during the Early Miocene may have slowed faunal movement between Africa, Europe, and Asia. Isotopes reveal a landscape far higher than today. Read more: geosociety.co/anatolian

Could asteroid impacts have sparked life on Earth? ☄️ A landmark #GSAToday article, which is gaining renewed attention through a PBS NOVA documentary and coverage in Newsroom, explores the possibility that impacts set the stage for the earliest stages of life. Read the article: geosociety.co/Kring

How can dome-shaped mountains rise far from a plate boundary? A new #Geology study finds the Hangay Mountains in central Mongolia may have risen after deep mantle “foundering” ~125 million years ago, triggered by a giant bend in an ancient plate boundary. Read more: geosociety.co/cretaceous#Geology

Read the June issue of GSA Today to discover how we share scientific knowledge across languages, explore advances in groundwater quality research, celebrate the stories behind impactful science, and get inspired by the diverse career pathways in geoscience: geosociety.co/GSAT_June26

EARTHCACHE: Devonian Fossil Gorge, Iowa City, Iowa. Floods in 1993 & 2008 exposed a ~375-million-year-old seafloor, revealing fossil-rich Devonian limestone with corals, crinoids, trilobites & more. 🧭 Explore during the Penrose Conference in Iowa: geosociety.co/GC1E69F

In the first "Montana Rocks!" media feature, geologist Robert C. Thomas shares the inspiration behind his new book exploring 4 billion years of history through 60 sites. Read the article: geosociety.co/readmore Buy "Montana Rocks!": geosociety.co/MontanaRocks

A new Geology study by Ian Forsythe et al. explores the late Katian, a pivotal interval between the Great Ordovician Biodiversification Event and the Late Ordovician Mass Extinction. The authors suggest intensifying glaciation may have driven the Richmondian Invasion. Read: geosociety.co/Ordovician

Dating authigenic K-feldspar is difficult, but a new study at Wisconsin’s Reef Au-Cu deposit used in situ 40Ar/39Ar dating on micro-vein K-spar to identify a 499.7 ± 0.8 Ma Paleozoic fault-fluid event—offering new clues to midcontinent tectonics. Read more: geosociety.co/feldspar

What set the surviving dinosaurs apart from those that went extinct? 🦖 In the new Geology Bites episode, Steve Brusatte, Professor and author of The Story of Birds, reveals which traits helped these survivors endure the aftermath of the impact. 🎧 Listen now: geosociety.co/GeologyBites_Dinos

Heavy rainfall and earthquakes can trigger landslides, but many catastrophic events occur with little or no rain. A new Geology study links early runoff and weak geomaterials to these events, improving warnings. Read more: geosociety.co/landslides Image: Baige Landslide, courtesy of the authors.

Water shapes how magmas behave, but measuring it accurately has long been difficult. A new study in the GSA Bulletin introduces a machine learning–based hygrometer to better estimate magmatic H₂O across tectonic settings. Read more: geosociety.co/plagioclase

Journeying through deep time at Siccar Point, Scotland ⛰️ GSA’s recent field trip explored the iconic site where James Hutton’s observations shaped our understanding of Earth’s history. Ready for your next geologic adventure? Explore GSA Connects 2026 field trips: geosociety.co/field-trips

New federal grant rules are under consideration—and the geoscience community needs to speak up. GSA opposes the Office of Management and Budget's (OMB) proposed changes. Visit geosociety.co/OMBActionAlert to read the full breakdown and submit your comment by 13 July.

New research is now online in the May/June issue of GSA Bulletin. Explore the latest geoscience discoveries and advances shaping our understanding of Earth: geosociety.co/May-June Cover: Great Plains of North America. Photo by Caroline Hasler.

Geosphere is accepting papers for its themed issue, Engaging the Next Generation: Keeping Geoscience Education Relevant in a Rapidly Changing World! Submit at: geosociety.co/nextgeneration

Field. Collections. Core. The final two days of the 2026 GSA Thompson Field Forum took the group to the Geological Survey of Namibia in Windhoek—Ediacaran fossil collections, a GRIND-ECT core workshop, and a fitting close to an incredible week. #ThompsonFieldForum #Namibia #GSAintheField

Volunteer at GSA Connects 2026! Help support meeting sessions and operations, connect with geoscientists worldwide, and receive complimentary registration in exchange for 8 volunteer hours. Questions? [email protected] Sign up: geosociety.co/volunteer

A sneak peek inside our new book, "Montana Rocks!" ⛰️ Explore 60 of Montana’s most fascinating geologic sites and uncover the stories behind the Big Sky landscape—from ancient mountains and Yellowstone volcanism to dinosaur nesting grounds and recent rockfalls. Order now: geosociety.co/MontanaRocks

Incised valleys. Reefs. Olistoliths. Treptichnids. Day 6 of the 2026 GSA Thompson Field Forum at Farm Swartkloofberg tackled the newly defined Swartkloofberg Formation—and the Cambrian boundary debate head-on. #ThompsonFieldForum #Ediacaran #Namibia #GSAintheField

Proposal submissions for the 2027 GSA Section Meetings are OPEN! Submit at: • geosociety.co/NortheasternSection • geosociety.co/SoutheasternSection • geosociety.co/RockyMountainSection • geosociety.co/CordilleranSection. Details for the 2027 Joint South-Central/North-Central coming soon.

Day 5 at Farm Swartpunt—one of the most significant Ediacaran fossil sites on Earth. Standing at an outcrop that helped define an entire chapter of life on Earth. That's a pretty remarkable place to spend a day in the field. #ThompsonFieldForum #Ediacaran #Namibia #GSAintheField

Calling all GSA Associated Societies! Your members are eligible for an exclusive 15% registration discount for GSA Connects 2026 in Denver. Each society will receive a unique code to share with members for use at checkout. Questions? Contact [email protected].

The June issue of #Geology is now online. Topics include the 2015 Axial Seamount eruption, earthquakes in the Seattle fault zone, and Holocene changes in mountain snowpack sublimation. 🔗 geosociety.co/4ftxTql#GeologyCover: Ferromanganese nodules on the deep sea floor, courtesy Yongzhi Liang.

Day 4 of the 2026 GSA Thompson Field Forum explored iconic Ediacaran fossils and unpacked the taphonomic questions that shape how we reconstruct Earth's earliest ecosystems. Not a bad afternoon in the field. #ThompsonFieldForum #Ediacaran #Namibia #GSAintheField

EARTHCACHE: Waterberg Plateau, Namibia. The Waterberg Plateau records ~130 million years of tectonic change tied to Gondwana’s breakup. Its red sandstone cliffs store rainwater, feeding springs that give Waterberg (“water mountain”) its name. Explore this EarthCache at geosociety.co/GCAZ4DK

You’ve built experience—now help shape what’s next. Join the 2026 Virtual Volunteer Fair to explore leadership with GSA Council, Committees, and Divisions. 📅 4 June, 11 a.m. MT 🔗 geosociety.co/2026-Virtual-Volunteer #VolunteerLeadership #Geoscience #Webinar

What does the dawn of animal life look like in the rock record? Day 3 of the 2026 GSA Thompson Field Forum went looking for answers at Farm Sonntagsbrunn. Incised valleys, Treptichnus pedum, and a boundary in Earth history that's still being rewritten—in real time, in the field. #GSAintheField

Bring your research to life at GSA Connects 2026 in Denver, Colorado, USA! Join geoscientists for four days of discovery, collaboration, and innovation. Early Registration Deadline: 27 August, connects.geosociety.org/register Abstract Submission Deadline: 6 August, geosociety.co/ConnectsAbstracts

Applications are now open for GSA’s 2026-2027 Science Communication Fellowship. We welcome applications from science writers, journalists, or scientists passionate about sharing their knowledge. Learn more and apply by 30 June 2026: geosociety.co/SciComm

Two days into the Thompson Field Forum in Namibia & the science is firing on all cylinders. Ediacaran stratigraphy, trace fossils & more that may reshape how we define the base of the Cambrian. Big questions, deep time & one of the most geologically significant landscapes on Earth.

From peat cores in the field to radiocarbon dating in the lab, undergraduate research is driving discovery. Supported by GSA's Northeastern Section Undergraduate Research Grant, Maria Fernanda Araoz Pozo is studying environmental change in Pennsylvania. Read more: geosociety.co/undergrad-research