Licht, A., Quade, J., Kowler, A., de Los Santos, M., Hudson, A., Schauer, A., Huntington, K., Copeland, P., Lawton, T., 2017. Impact of the North American monsoon on isotope paleoaltimeters: implications for the paleoaltimetry of the American Southwest. American Journal of Science 317, 1-33.
Adam M Hudson
Biography
I am a geochemist and geologist specializing in lakes, wetlands, and soils, with a focus on carbonates. I am particularly interested in what isotopes in carbonates can say about the geologic history of these types of environments. My main research goal is to understand what affects water availability in arid regions. I have done research in Tibet, the Andes, and the western United States. My current research is focused in the US Great Basin, Alaska, and the southern Rocky Mountains.
Science and Products
Date published: May 11, 2020
Status: Active Denali National Park Geohazards Geologic Mapping
Denali National Park (DENA) is a major draw for tourism and recreation and a major economic engine for central Alaska. However, the geologic forces that created the steep landscape of DENA also make it prone to geologic hazards (geohazards) like landslides, debris flows, and earthquakes. DENA has only one major road, called the ‘Park Road’, that serves nearly all of its infrastructure.
...
Contacts: Cal Ruleman, Adam M Hudson
Date published: October 4, 2019
Status: Active Geologic Framework of the Intermountain West
The Geologic Framework of the Intermountain West project was launched with the goal of producing a new digital geologic map database and 3D geologic model of a transect from the Rio Grande rift to the Basin and Range, based on a synthesis of existing geologic maps with new targeted new mapping, subsurface data, and other data sets. This database will integrate disparate map data, resolve...
Contacts: Joseph Colgan, Ren Thompson
Date published: May 8, 2019
Status: Active Serving the U.S. Geological Survey’s geochronological data
Geochronological data provide essential information necessary for understanding the timing of geologic processes and events, as well as quantifying rates and timescales key to geologic mapping, mineral and energy resource and hazard assessments. The USGS’s National Geochronological Database (NGDB) contains over 30,000 radiometric ages, but no formal update has occurred in over 20 years. This...
Contacts: Amy Gilmer, Leah E Morgan, Ph.D., Michael Cosca, Adam M Hudson, James Paces, Joseph Colgan
Attribution: Community for Data Integration (CDI)
Date published: July 14, 2017
Status: Active Denver Radiogenic Isotope Lab
Radiogenic isotopes are daughter nuclides derived from natural decay of radioactive parent nuclides. They are useful for determining radiometric ages of rocks, minerals, and soils, and can be used as natural tracers of lithologic, hydrologic, and biologic materials.
Date published: July 14, 2017
Status: Active Paleohydrology of Desert Wetlands
Springs and wetlands are among the most highly threatened ecosystems on Earth. Although geographically limited, they support more than 20% of all the threatened and endangered species in the United States. Scientists from the U.S. Geological Survey are examining the rock record to determine how springs and wetlands responded to abrupt climate change during prehistoric times and the recent...
Date published: December 13, 2019
Data release for Middle Pleistocene formation of the Rio Grande Gorge, San Luis Valley, south-central Colorado and north-central New Mexico, USA: Process, timing, and downstream implications
This dataset includes tables of He-isotopic data used to calculate surface exposure ages for samples of basalt, and U- and Th-isotopic data used to calculate uranium-series age estimates (230Th/U method) and initial 234U/238U activity ratios for samples of pedogenic carbonate formed in soils on alluvial fans in the San Luis Valley, Colorado, USA.
Attribution: Geosciences and Environmental Change Science Center
Date published: January 1, 2019
Data release for Isotopic constraints on middle Pleistocene cave evolution, paleohydrologic flow, and environmental conditions from Fitton Cave speleothems, Buffalo National River, Arkansas (KIG'17)
This dataset accompanies publication 'Isotopic constraints on middle Pleistocene cave evolution, paleohydrologic flow, and environmental conditions from Fitton Cave speleothems, Buffalo National River, Arkansas', to be published as a USGS Scientific Investigations Report associated with the 2017 USGS Karst Interest Group meeting in San Antonio, TX.
Pre-USGS Publications
Conroy, J.L, Hudson, A.M., Overpeck, J.T., Liu K.-B., Wang L., 2017. The primacy of multidecadal to centennial variability of late-Holocene forced change of the Asian Monsoon on the southern Tibetan Plateau. Earth and Planetary Science Letters 458, 337-348.
Hudson, A.M., Olsen, J.W., Quade, J., Lei G., Huth, T.E., Zhang H., 2016. A regional record of expanded Holocene wetlands and prehistoric human occupation from paleowetland deposits of the western Yarlung Tsangpo valley, Tibetan Plateau. Quaternary Research 86, 13-33.
Perreault, C., Boulanger, M.T., Hudson, A.M., Rhode, D., Madsen, D.B., Olsen, J.W., Steffen, M.L., Quade, J., Glascock, M.D., Brantingham, P.J., 2016. Characterization of obsidian from the Tibetan Plateau by XRF and NAA. Journal of Archaeological Science: Reports 5, 392-399.
Phillips, F.M., Kelly, M.A., Hudson, A.M., Stone, J.O.H., Schaefer, J., Marrero, S., Fifield, K., Finkel, R., Lowell, T.V., 2016, CRONUS-Earth calibrations samples from the Huancané moraines, Quelccaya Ice Cap, Peru. Quaternary Geochronology, 31, 220-236.
Phillips, F.M., Argento, D.C., Balco, G., Caffee, M.W., Clem, J., Dunai, T.J., Finkel, R., Goehring, B., Gosse, J.C., Hudson, A.M., Jull, A.J.T., Kelly, M.A., Kurz, M., Lal, D., Lifton, N., Marrero, S.M., Nishiizumi, K., Reedy, R.C., Schaefer, J., Stone, J.O.H., Swanson, T., Zreda, M.G., 2016, The CRONUS-Earth project: a synthesis. Quaternary Geochronology 31, 119-154.
Phillips, F.M., Argento, D.C., Bourles, D.L., Caffee, M.W., Dunai, T.J., Goehring, B., Gosse, J.C., Hudson, A.M., Jull, A.J.T., Kelly, M., Lifton, N., Marrero, S.M., Nishiizumi, K., Reedy, R.C., Stone, J.O.H., 2016, Where now? Reflections on future directions for cosmogenic nuclide research from the CRONUS Projects. Quaternary Geochronology 31, 155-159.
Hudson, A.M., Quade, J., Huth, T.E., Lei G., Cheng H., Edwards, R.L., Olsen, J.W., and Zhang H., 2015, Lake level reconstruction for 12.8-2.3 ka for the Ngangla Ring Tso closed-basin lake system, southwest Tibetan Plateau. Quaternary Research 83, 66-79.
Huth, T.E., Hudson, A.M., Quade J., Lei G., and Zhang H., 2015, Paleohydrologic reconstruction of Holocene climate 11.5-5.0 ka based on shoreline dating and hydrologic budget modeling of Baqan Tso, southwestern Tibetan Plateau. Quaternary Research 83, 80-93.
Grimstead, D.N., Reynolds, A.C., Hudson, A.M., Akins, N.J., Betancourt, J.L., 2015, Low 87Sr/86Sr variance in turkey remains reveal domestication at Chaco Canyon. Journal of Archaeological Methods and Theory 23, 127-149
Hudson, A.M., Olsen, J.W., and Quade, J., 2014, Radiocarbon dating of interdune paleowetland deposits to constrain the age of mid- to Late Holocene microlithic artifacts from the Zhongba site, southwestern Qinghai-Tibet Plateau. Geoarchaeology 29, 33-46.
Huntington, K.W., Saylor, J., Quade, J., and Hudson, A.M., 2015, New constraints on Tibetan Plateau uplift from carbonate clumped isotope thermometry. Geological Society of America Bulletin 127, 181-199.
Kelly, M.A., Lowell, T.V., Applegate, P.J., Phillips, F.M., Schaefer, J.M., Smith, C.A., Kim, H., Leonard, K., and Hudson, A.M., 2015, A locally calibrated late glacial 10Be production rate from a low-latitude, high-altitude site in the Peruvian Andes: Quaternary Geochronology 26, 70-85
Hudson, A.M., and Quade, J., 2013, Long-term asymmetry in monsoon climate on the Tibetan Plateau: Geology 41, 351-354.
Kelly, M.A., Lowell, T.V., Applegate, P.J., Smith, C.A., Phillips, F.M., and Hudson, A.M., 2012, Late glacial fluctuations of Quelccaya Ice Cap, southeastern Peru: Geology 40, 991-994.
Pelletier, J.D., Engelder, T.M., Comeau, D., Hudson, A., Leclerc, M., Youberg, A., and Diniega, S., 2009. Tectonic and structural control of fluvial channel morphology in metamorphic core complexes: The example of the Catalina-Rincon core complex, Arizona, Geosphere, 5, 363-384.