Geological Insights & Event News

Dr. Ali Jaffri critiques the widespread but flawed practice of correlating marginal marine sandstones as laterally continuous “layer cake” benches. He explains that rapid facies shifts make these reservoirs highly heterogeneous and that operators risk mischaracterizing geometry when assuming continuity. His talk urges log correlations that honor true stratigraphic complexity. In Prez Sez, President Jim Corken reflects on the industry’s “great crew change,” celebrates new student sponsorship programs, and calls for volunteers to serve on the Field Trip Committee.

Tim Rynott’s abstract outlines the U.S.’s rapid rise as a global LNG exporter, driven by shale gas, growing Asian demand, and competitive spot market pricing. He highlights geopolitical challenges for Qatar, Australia, and Russia, and emphasizes strong potential in the Piceance and San Juan Basins, including rising Mancos activity and expanding access to Asian and Mexican markets. In Prez Sez, President Jim Corken welcomes members, praises volunteers, and launches new committees, including a Field Trip Committee.

Tracy Dembrowski refines the Trimble Granite age and links it to older Eolus phases (“U Pb zircon analysis…1457±17.8 Ma”). Nick Risedorf shows Permian–Pennsylvanian carbonates on the Big Gypsum megaflap record early halokinetic deformation. Katrina Bryant finds sondes only weakly track Animas River metals (“turbidity yielded the strongest correlation”). Dani Vitarelli maps complex, segmented Sangre de Cristo fault scarps with variable slip. In Prez Sez, Rebecca Pendleton highlights the Greater Aneth core workshop, the Annual Picnic, and the NMGS Ouray–Silverton Field Conference.

Dr. M. Beatrice Magnani examines how seismic reflection data distinguish natural from induced earthquakes in the Central US, showing long active faults in the Mississippi Embayment versus anomalous, likely induced seismicity in the Fort Worth Basin. In her Prez Sez column, President Rebecca Pendleton calls for volunteers to help plan the 2020 AAPG RMS Meeting. Regional news includes upcoming Front Range field trips and the 2017 NMGS Ouray–Silverton conference.

Dr. Rusty Riese outlines a complex Fruitland Fm. hydrocarbon system where the resource is affected by multiple tectonic events as well as four hydrologic regimes. Thermogenic methane is supplemented by biogenic gas introduced by microbes brought in from surface waters 35–40 Ma. Jim Corken volunteered to fill the vacant President-Elect position for the remainder of the season. The BLM will hold rulemaking hearings on fossil collecting on public lands. In Prez Sez, President Rebecca Pendleton highlights summer planning and promotes the NMGS Fall Fieldtrip.

The Society mourns the loss of President-Elect Laurie VanIngen who passed away November 30th from thyroid cancer. The board is filling in for him for the rest of the year. Odin D. Christensen, President and Chief Geologist of Hardrock Mineral Exploration, reviews the Gravel Creek epithermal Ag-Au deposit, where Miocene boiling fluids formed stratabound breccias and high grade fault hosted ore. The 2016 resources total 1.4 Moz Au and 21 Moz Ag. President Rebecca Pendleton highlights plans to support the 2017 NMGS Ouray–Silverton fieldtrip. Regional news includes upcoming talks and courses.