This three-year, $337,782 Project Grant from the National Science Foundation's Geosciences program (CFDA 47.050) supports research at California State University Fullerton and Princeton University to determine the time and length scales of magma bodies in magmatic arcs. The grant recipients will study potassium feldspar phenocrysts and megacrysts up to 12 cm long containing mineral inclusions from the Tuolumne Intrusive Complex in Yosemite National Park. Electron microprobe, laser...
This $355,607 Project Grant award from the National Science Foundation (NSF) Division of Earth Sciences under the Geosciences program (CFDA 47.050) supports collaborative research to investigate an ancient example of flat-slab subduction in southern California and western Arizona. The goal is to collect data from rocks that were once located above the descending oceanic plate in order to improve simulations and understanding of similar modern tectonic settings, many of which pose significant...
This Project Grant award of $177,497 from the National Science Foundation's Geosciences Program (CFDA 47.050) supports collaborative research by the University of South Florida to unravel the timing and episodicity of magmatic intrusions under a distributed volcanic field in the western United States. The key research activities include: (1) constraining the absolute and relative ages of intrusive episodes to calculate the number and rate of intrusive events; (2) locating and estimating the...
This two-year, $274,138 National Science Foundation project grant supports research into crustal evolution and recycling processes in a long-lived magmatic system exposed in the Transverse Ranges of California. Funded under the NSF's Geosciences program (CFDA 47.050), the project aims to advance understanding of continental arc growth through quantitative analysis of field and laboratory data from diverse rock samples representing different depths and time periods within the magmatic system....
This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) provides $335,489 to Florida State University to conduct collaborative research on depth-dependent decarbonation processes in the Sierra Nevada, California. The research focuses on understanding how high-pressure, high-temperature metamorphism driven by magma intrusion into the Earth's crust can mobilize carbon and other elements, potentially leading to the formation of valuable skarn mineral...
This $303,170 federal Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will support collaborative research on magma diversification and mobilization processes in the lower continental crust. The primary awardee, The University Corporation, a non-profit auxiliary organization affiliated with California State University, Northridge, will work with researchers in New Zealand to link field data, geochemistry, and geochronology to investigate whether...
This $174,786 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will fund research to test models for the emplacement of the Tuolumne Intrusive Suite (TIS) magmas in California's Sierra Nevada mountains. The project will use in-situ zircon geochronology and geochemistry to characterize the volume and spatial distribution of inherited zircon in the TIS, and investigate the processes that created chemical differences between early and late TIS units....
Pomona College received a $104,344 Project Grant award from the National Science Foundation Division of Earth Sciences on August 1, 2021 to complete work by July 31, 2024. The award supports collaborative research titled "Contribution of Mafic Magmatism to Upper Crustal Batholiths: A Case Study of the Sierra Nevada Batholith" under the NSF's Geosciences program (CFDA 47.050). The Geosciences program seeks to expand fundamental knowledge and understanding of the integrated Earth...
This $227,192 Project Grant award, provided by the National Science Foundation's Geosciences Program (CFDA 47.050) to the California State University Long Beach Research Foundation, supports research to unravel spatiotemporal deformation patterns in the Basin and Range and Walker Lane provinces. The award aims to combine geochronology methods and scaffolded peer-peer student mentoring to better understand how tectonic plates interact by moving towards each other (convergent), moving away from...
This $185,953 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports collaborative research to leverage isotopic compositions of igneous systems to resolve the geometry and distribution of subducted sediment in the southern U.S. Cordillera. The research, led by the University of Texas at El Paso, aims to determine the distribution and geometry of subducted sediment in the continental crust by using igneous rocks as "deep-crustal probes" to...
This $198,248 Project Grant award from the National Science Foundation's (NSF) Geosciences Program (CFDA 47.050) will support research to investigate the magmatic evolution and timing of the Independence Dike Swarm in eastern California. The principal objectives are to: 1) characterize the chemical composition and age of dikes across the swarm, including segments that are only tentatively correlated, to better understand the magmatic processes and emplacement history; 2) develop a dating method using rubidium-strontium isotopes to analyze mafic dikes that lack zircons; and 3) integrate the new data with previous work to create a comprehensive model of the swarm's magmatic evolution. This research will provide opportunities for approximately 10 undergraduate students to participate, expand the analytical capabilities at the primarily undergraduate Pomona College, and support an early-career geoscientist. The project aims to advance knowledge about large dike swarms, which represent the plumbing systems of major magmatic systems, and inform understanding of the tectonic history of the Sierra Nevada region.