Project Grant 2247238
- This three-year Project Grant from the National Science Foundation Division of Earth Sciences, under the Geosciences program (CFDA 47.050), provides $626,036 to the University of Cincinnati to conduct research on the role of seasonality in abrupt climate change during the last ice age. The researchers will map and date glacial landforms in Maine to reconstruct the pattern and timing of recession of an ice cap that persisted in the region through the end of the last ice age. They will also...
- This Project Grant award, valued at $359,487, was provided by the National Science Foundation's Polar Programs (CFDA 47.078) to The Trustees of Princeton University. The funding will be used to develop advanced analytical methods for high-resolution chemical imaging and dating of ancient ice cores from Antarctica's Blue Ice Areas, which contain climate records spanning over 1 million years. Specifically, the project will utilize cryo-cell laser ablation inductively coupled plasma mass...
- This three-year, $1.2 million Project Grant from the National Science Foundation Division of Earth Sciences aims to test the role of seasonality in abrupt climate change through reconstructing fluctuations of a late-glacial ice mass in eastern North America. Under the Geosciences program (CFDA 47.050), which supports basic research in atmospheric, earth, and ocean sciences, the University of Maine will collaborate with researchers to determine the signature of summer warming-driven ice retreat...
- This three-year, $109,644 project grant from the National Science Foundation Division of Earth Sciences aims to advance understanding of abrupt climate change through reconstructing fluctuations of a late-glacial ice mass in eastern North America. Funded under the Geosciences program (CFDA 47.050), the University of Arizona will lead efforts to determine the role of seasonality in abrupt climate shifts by mapping glacial landforms and dating the pattern and timing of recession for an ice cap...
- The National Science Foundation (NSF) awarded a $299,055 Project Grant under the Polar Programs (CFDA 47.078) federal grant program to the University of California Santa Cruz (UCSC) to investigate how variations in Earth's orbital patterns influence surface melting and the climate of Antarctica. The researchers will identify and date past periods of ice melting on the Antarctic continent using uranium-thorium dating of pedogenic carbonates deposited by meltwater, with the goal of correlating...
- This $293,010 National Science Foundation project grant under the Geosciences program (CFDA 47.050) will fund research at The Ohio State University to develop novel isotope proxies that improve understanding of Earth's climate and carbon cycle dynamics at the onset of the Late Paleozoic Ice Age from 350 to 290 million years ago. The grantee will pair calcium and clumped isotope systems to test hypotheses regarding diagenetic influences on stable carbon isotopes used as proxies for carbon...
- This Project Grant from the National Science Foundation's Geosciences program (CFDA 47.050) provides $248,863 to the Massachusetts Institute of Technology for research entitled "Collaborative Research: Ear Climate - Pairing Calcium and Clumped Isotopes to Inform Carbon Cycle and Climate Dynamics at the Onset of the Late Paleozoic Ice Age." The research will develop novel isotope proxies to understand the role of land plant evolution on organic carbon burial, atmospheric carbon dioxide,...
- This $116,693 Project Grant from the National Science Foundation's Geosciences program (CFDA 47.050) supports collaborative research to illuminate fundamental climate processes that influenced terrestrial ecology in western Pangea during Earth's previous icehouse period. Key goals combine paleontology, isotope geochemistry, and magnetostratigraphy to: identify the stratigraphic position of the Carboniferous-Permian boundary in Utah's Cutler Group sedimentary rocks; determine the pace and...
- This federal Project Grant award of $355,024 from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a collaborative research effort to reconstruct the collapse of the Cordilleran Ice Sheet in western Canada since the last ice age. The project aims to determine the timing and rate of the ice sheet's disappearance over the past 10-20 thousand years through geologic dating of rock samples and computer modeling. By improving understanding of past ice sheet changes, the...
- The University of California San Diego Scripps Institution of Oceanography will receive $363,261 under a three-year Project Grant from the National Science Foundation Division of Polar Programs. The grant will fund collaborative research titled "Peripheral East Antarctic Ice as a Unique Recorder of Climate Variability During the Last Interglacial" from August 2021 through July 2024. The research aims to strengthen understanding of polar regions by expanding knowledge of climate...
SNOWBALL EARTH IN SPACE AND TIME -AT LEAST TWICE DURING THE CRYOGENIAN PERIOD (720-635 MILLION YEARS AGO), ICE COVERED THE EARTH FOR MILLIONS OF YEARS IN SNOWBALL EARTH EVENTS. THESE ARE THE MOST EXTREME EPISODES OF CLIMATE CHANGE IN THE GEOLOGICAL RECORD, BUT THE DURATION OF GLACIATION AND THE RATE OF ICE MOVEMENT REMAIN POORLY CONSTRAINED. THE RESEARCH TEAM WILL USE SEDIMENT CORE OF GLACIAL DEPOSITS IN ANTARCTICA, COUPLED WITH DRONE-BASED MAPPING AND PRECISE ISOTOPIC DATING ON SNOWBALL EARTH DEPOSITS IN NAMIBIA, TO CONSTRUCT A RATE-DEPENDENT STRATIGRAPHIC MODEL. THEY WILL ALSO DEVELOP A RESEARCH EXCHANGE BETWEEN UNIVERSITY OF NAMIBIA AND UCSB TO TRAIN STUDENTS IN THE FIELD IN NAMIBIA AND IN THE LAB IN CALIFORNIA. THIS TRAINING WILL OCCUR DURING THE COURSE OF GEOLOGICAL FIELD MAPPING AND SAMPLE ANALYSIS THAT IS ESSENTIAL CONTEXT FOR THEIR RESEARCH GOALS OF CONSTRAINING THE TEMPO AND NATURE SNOWBALL EARTH, AND WILL PREPARE STUDENTS FOR CAREERS IN GEOSCIENCES, INCLUDING CRITICAL MINERALS. THE LARGEST UNCERTAINTY IN THE TIMELINE OF CRYOGENIAN GLACIATIONS IS THE ONSET AGE OF THE MARINOAN GLACIATION, WHICH IS NOT ONLY IMPORTANT FOR CONSTRAINING THE RATE AND NATURE OF GLACIAL PROCESSES, BUT ALSO MECHANISMS FOR INITIATION AND DEGLACIATION. PREVIOUS STUDIES HAVE SUGGESTED THAT WATER-LAIN SEDIMENTS DEPOSITED DURING SNOWBALL EARTH ARE INCOMPATIBLE WITH A WEAK HYDROLOGIC CYCLE. A PROPOSED RECONCILIATION IS THAT DURING LATE STAGES OF SNOWBALL EARTH WITH HIGH CO2, ICE-SHEETS COULD RESPOND TO ORBITAL FORCING LEADING TO A MORE ACTIVE HYDROLOGICAL CYCLE. HOWEVER, BECAUSE THESE STUDIES HAVE NOT BEEN ABLE TO CONSTRAIN RATE, IT IS UNCLEAR IF THE APPARENT CYCLICITY IN THESE STRATIGRAPHIC SECTIONS IS DUE TO QUATERNARY-LIKE ORBITAL FORCING OR AUTOGENIC PROCESSES INTERNAL TO THE ICE SHEET THAT HAVE LITTLE TO DO WITH EXTERNAL FORCINGS. THE RESEARCHER'S PRELIMINARY U-PB ZIRCON GEOCHRONOLOGY AND DRONE-BASED MAPPING DATA DOCUMENT MULTIPLE DATABLE VOLCANIC HORIZONS THAT CAN BE USED TO CONSTRAIN THE RATE OF GROUNDING-LINE OSCILLATION, AND PROVIDE THE FIRST TEMPORALLY QUANTITATIVE FACIES MODEL FOR SNOWBALL EARTH GLACIAL DEPOSITS. THIS AWARD REFLECTS NSF'S STATUTORY MISSION AND HAS BEEN DEEMED WORTHY OF SUPPORT THROUGH EVALUATION USING THE FOUNDATION'S INTELLECTUAL MERIT AND BROADER IMPACTS REVIEW CRITERIA.
Mod # | Description | ReasonForModification | Federal Obligation | Date |
|---|---|---|---|---|
| Not listed | ($93k) | 6/29/25 | ||
| Not listed | $263.2k | 5/17/23 |