A5051420657- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Geological formations and processes
- Hydrology and Watershed Management Studies
- Pleistocene-Era Hominins and Archaeology
- Groundwater and Isotope Geochemistry
- Archaeology and Natural History
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Water Quality and Resources Studies
- Landslides and related hazards
- Botany, Ecology, and Taxonomy Studies
- Isotope Analysis in Ecology
- Archaeology and ancient environmental studies
- Methane Hydrates and Related Phenomena
- Rangeland and Wildlife Management
- Geomagnetism and Paleomagnetism Studies
- Geological and Geophysical Studies
- Marine and environmental studies
- Hydrology and Sediment Transport Processes
- Climate change and permafrost
- Geological Studies and Exploration
- Groundwater flow and contamination studies
- Radioactive contamination and transfer
- Hydraulic flow and structures
Western Colorado University
2010-2024
Ocean Power Technologies (United States)
2022
University of Utah
2004-2007
Abstract Pedogenic carbonate is commonly used as a paleoarchive, but its interpretation limited by our understanding of formation conditions. We investigated laminated soil rinds high‐resolution paleoarchive in Torrey, Utah, USA, characterizing and modeling their compared late Holocene (<5 ka) conventional (C O) “clumped” isotopes to modern environment isotope measurements: CO 2 partial pressure, temperature, moisture, δ 13 C‐soil , 18 O precipitation, O‐soil water. Data unambiguously...
Abstract. About 80 % of the precipitation at Colorado River's headwaters is snow, and resulting snowmelt-driven hydrograph a crucial water source for about 40 million people. Snowmelt from alpine subalpine snowpack contributes substantially to groundwater recharge river flow. However, dynamics snowmelt progression are not well understood because observations high-elevation difficult due challenging access in complex mountainous terrain as cost labor intensity currently available methods. We...
Abstract Deeper flows through bedrock in mountain watersheds could be important, but lack of data to characterize properties limits understanding. To address scarcity, we combine a previously published integrated hydrologic model snow‐dominated, headwater basin the Colorado River with new method for dating baseflow age using dissolved gas tracers SF 6 , CFC‐113, N 2 and Ar. The original flow predicts majority groundwater shallow alluvium (<8 m) sitting on top less permeable bedrock. water...
Abstract Understanding the timing of mountain glacier and paleolake expansion retraction in Great Basin region western United States has important implications for regional-scale climate change during last Pleistocene glaciation. The relative maxima well-studied Lake Bonneville highstand been unclear, however, owing to poor chronological limits on glacial deposits. Here, this problem is addressed by applying terrestrial cosmogenic 10 Be exposure dating a classic set terminal moraines Little...
Stable isotope ratios of precipitation are useful tracers climatic and hydrological processes. To better understand the hydro-climatology a high-elevation Rocky Mountain valley we collected meteoric water samples from Gunnison, Colorado, USA determined stable values for 239 individual events over nine year period. Annual in Gunnison is moderately bi-modal with significant winter snowfall convective summer thunderstorms associated North American Monsoon. span large range, rains as high δ2H =...
Boulder Mountain, located in South Central Utah, is one of several mountain ranges on the Colorado Plateau that was glaciated during late Pleistocene. Using 3He exposure-age dating (corrected for non-cosmogenic with shielded samples), we determined exposure-ages boulders from most well-preserved moraines Fish Creek drainage Mountain. indicate a last glacial maximum (LGM) advance ∼23,100 ± 1300 to 20,000 1400 yr ago and later smaller ∼16,800 500 15,200 ago. This chronology very similar other...
Abstract The High Plateaus of Utah include seven separate mountain ranges that supported glaciers during the Pleistocene. Fish Lake Plateau, located on eastern edge Plateaus, preserves evidence at least two glacial advances. Four cosmogenic 3 He exposure ages boulders in an older moraine range from 79 to 159 ka with a mean age 129 ± 39 and oldest 152 5 ka. These suggest deposition type Bull glaciation Marine Oxygen Isotope Stage (MIS) 6. Twenty boulder four different younger moraines...
Andesitic boulder deposits mantle straths cut in sedimentary bedrock high above the northern tributaries of Escalante River south-central Utah. The andesitic gravel are derived from southern escarpments Boulder Mountain and Aquarius Plateau. sedimentology geomorphic expression these suggest they slurry-flow mass movements that have been reworked by fluvial processes. boulders significantly tougher than local cause armoring topographic inversion. also effective tools for incision when...
Recent work suggests that the C- and O-isotope composition of laminated soil carbonate rinds can provide high-resolution (100 s yr/sample) information about hydrologic processes vegetation over tens thousands years. However, while this archive potentially quantitative reconstructions, most interpretations have thus far been qualitative. In study, we show how modern data "clumped" isotope paleothermometry be leveraged to constrain conditions rind formation for a sample from western Colorado...
Earth and Space Science Open Archive This work has been accepted for publication in Water Resources Research. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Baseflow Age Distributions Depth Active Groundwater Flow Snow-Dominated Mountain Headwater BasinAuthors Rosemary W.H. Carroll iD Andrew H. Manning Richard Gray Niswonger David...