Geological Society of America Publications

The January 2025 issue of #Geology is now online. Topics include the opening of the North Atlantic Ocean, submarine canyon flushing events, and marsh topography. https://lnkd.in/g-QwZHFK #Geoscience #GSAPubs Cover: Autonomous underwater vehicle (AUV) high-resolution (1 m) bathymetry image from Kaikōura Canyon (1 km off the Kaikōura Peninsula, South Island, Aotearoa [New Zealand]). Image collected using the Kongsberg Maritime's HUGIN AUV, owned by University of Gothenburg. Data processed by NIWA and AUT staff.

Happy birthday to J.R.R. Tolkien, who is famous for another Earth about which much has been written and theorized. #Geoscience #GeologyRocks #MiddleEarth #Volcano #Geology #LOTR #Tolkien Image: "Mount Vesuvius at Midnight" (1868, oil on canvas) by Albert Bierstadt; courtesy The Cleveland Museum of Art on Unsplash.

Jurassic Park? More like Triassic Campus. 🤭 The #VirginiaTech Paleobiology Research Group recently hosted its annual fossil unpacking party at the Museum of Geosciences, inviting the public to unwrap Triassic fossils gathered from sites in Texas and Arizona.

The January/February issue of GSA Bulletin is here! Browse and read online at https://lnkd.in/gEN3HRzc. #GSABulletin #GSAPubs #Geology #Geoscience #EarthScience Cover photo by Ian Cawood.

In their new #GSABulletin paper “Insights of fault activities through 3-D shape preferred orientation and illite age analysis,” Ho Sim, Yungoo Song, and Seongsik Hong “propose a new approach to reconstruct fault activation history by conducting systematic fabric observations, X-ray diffraction analysis, 3-D shape preferred orientation (SPO) analysis, and illite age analysis (IAA) on fault gouge affected by brittle deformation in the Yeonghae area of the Yangsan fault in the southeastern part of the Korean Peninsula.” https://lnkd.in/gZTTSuSc #GSAPubs #StructuralGeology #Tectonics #Geochronology #Paleoseismicity #KoreanPeninsula Image: Figure 3 from the paper.

New at #GSABulletin online: Paquette and colleagues study “the age, history of emplacement, and source of the Mount Hillers intrusive center (Henry Mountains, Colorado Plateau, Utah, USA) with in situ U-Pb and Lu-Hf isotopic analysis of the same zircon grains.” Read more in “Timescales of pluton assembly and growth history of Colorado Plateau lithosphere” at https://lnkd.in/gddV5exW. #GSAPubs #ColoradoPlateau #HenryMountains #Geochronology #Petrology #Geodynamics #Tectonophysics CNRS IRD CNES GEOPS - Géosciences Paris-Saclay Photo: Robert Emberson (distributed via imaggeo.egu.eu) on Wikimedia Commons.

GSA Membership: Get involved. Make connections. Build relationships. Be heard. Shape your future. Make a difference. Change the world. What’s stopping you? It’s never too late. Your future starts now. Start now. Be a GSA Member. Join today! Explore benefits at https://lnkd.in/djX3TeKJ. #Geoscience #GSAMember #GSAMembership #Geology #GeologyRocks #GeoCommunity #MemberBenefit

“The strandplains of the southeast Lake Superior coastline between Au Sable Point and Whitefish Point, Michigan, USA, record a response to Holocene lake-level variation (∼75 m), changing sediment supply, and accommodation space, and are good analogues for future shoreline behaviors associated with water-level changes along lacustrine and marine coastlines.” Read more in “A Holocene history of high bluffs, strandplains, terraces, and dunes along the southeastern margin of Lake Superior (Michigan, USA) with reference to fluctuating lake levels,” by Timothy G. Fisher and colleagues, at https://lnkd.in/gY8kxSKd. #CoastalGeology #Geomorphology #Geophysics #GSABulletin #GSAPubs Indiana Geological and Water Survey Image: Figure 2 from the paper.

Miruo Lin and colleagues use “high-resolution sedimentology with organic geochemistry and cyclostratigraphy of deep-lacustrine shales…to analyze the dynamic sedimentary processes responsible for the transport, distribution, and deposition of the fine-grained sediments in deep-lacustrine basins.” Read more in “Recognition of muddy hyperpycnites in deep-lacustrine settings: Depositional model for muddy hyperpycnal flows in lacustrine basins,” newly published at #GSABulletin online. https://lnkd.in/gDDcNnVC #SedimentaryGeology #GSAPubs YPF 刘可禹 Germán Otharán CARLOS ZAVALA Image: Figure 16 from the paper

#Geology #Geoscience #GeologyRocks #GeoCommunity #FieldTrips #Rocks #EarthScience #Discover #Explore #EarthScience #Rockhound #Geologist #Wander Geological Society of America Photo: Matheus Frade on Unsplash.