Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2350
Remote thermal detection of exfoliation sheet deformation
A growing body of research indicates that rock slope failures, particularly from exfoliating cliffs, are promoted by rock deformations induced by daily temperature cycles. Although previous research has described how these deformations occur, full three-dimensional monitoring of both the deformations and the associated temperature changes has not yet been performed. Here we use integrated terrestr
Authors
Antoine Guerin, Michel Jaboyedoff, Brian D. Collins, Greg M. Stock, Marc-Henri Derron, Antonio Abellan, Battista Matasci
Linking mesoscale meteorology with extreme landscape response: Effects of narrow cold frontal rainbands (NCFR)
Landscapes evolve in response to prolonged and/or intense precipitation resulting from atmospheric processes at various spatial and temporal scales. Whereas synoptic (large‐scale) features (e.g., atmospheric rivers and hurricanes) govern regional‐scale hydrologic hazards such as widespread flooding, mesoscale features such as thunderstorms or squall lines are more likely to trigger localized geomo
Authors
Brian D. Collins, N. S. Oakley, Jonathan P. Perkins, Amy E. East, Skye C. Corbett, Benjamin J. Hatchett
A multiproxy database of western North American Holocene paleoclimate records
Holocene climate reconstructions are useful for understanding the diverse features and spatial heterogeneity of past and future climate change. Here we present a database of western North American Holocene paleoclimate records. The database gathers paleoclimate time series from 184 terrestrial and marine sites, including 381 individual proxy records. The records span at least 4000 of the last 12 0
Authors
Cody C. Routson, Darrell S. Kaufman, Nicholas P. McKay, Michael Erb, S. H. Arcusa, Kendrick Brown, Matthew E. Kirby, Jeremiah Marsicek, R. Scott Anderson, Gonzalo Jimenez-Moreno, Jessica R. Rodysill, M. S. Lachniet, Sherilyn C. Fritz, Joseph Bennett, Michelle F. Goman, Sarah E. Metcalfe, J. M. Galloway, G. Schoups, David Wahl, Jesse L. Morris, F. Staines-Urias, A. Dawson, B. N. Shuman, Daniel G. Gavin, Jeffrey S. Munroe, Brian F. Cumming
Why did Great Basin Eocene magmatism generate Carlin-type gold deposits when extensive Jurassic to Middle Miocene magmatism did not? Lessons from the Cortez Region, Northern Nevada, USA
No abstract available.
Authors
Christopher D. Henry, David John, Matt T. Heizler, Robert W. Leonardson, Joseph Colgan, Kathryn E. Watts, Michael W. Ressel, Brian L. Cousens
Opportunities and challenges for restoration of the Merced River through Yosemite Valley, Yosemite National Park, USA
Successful river restoration requires understanding and integration of multiple disciplinary perspectives, including evaluations of past and ongoing watershed processes, local geomorphic response, and impacts unique to human activity. Nowhere is this more apparent than along the Merced River in Yosemite National Park, USA, where both an outstanding natural landscape and the consequences of over a
Authors
Derek Booth, Katie Ross-Smith, Elizabeth Haddon, Thomas Dunne, Eric W. Larsen, James W. Roche, Greg M. Stock, Virginia Mahacek
Sea surface temperature across the Subarctic North Pacific and marginal seas through the past 20,000 years: A paleoceanographic synthesis
Deglacial sea surface conditions in the subarctic North Pacific and marginal seas are the subject of increasing interest in paleoceanography. However, a cohesive picture of near-surface oceanography from which to compare inter and intra-regional variability through the last deglaciation is lacking. We present a synthesis of sea surface temperature covering the open North Pacific and its marginal s
Authors
Catherine V. Davis, Sarah Myhre, Curtis Deutsch, Beth Caissie, Summer K. Praetorius, Marisa Borreggine, Robert C. Thunell
Holocene paleoclimate change in the western US: The importance of chronology in discerning patterns and drivers
Sediment in lakes and meadows forms a powerful archive that can be used to reconstruct environmental change through time. Reconstructions of lake level, of chemical, biological, and hydrological conditions, and of surrounding vegetation provide detailed information about past climate conditions, both locally and regionally. Indeed, most of our current knowledge of centennial- to millennial-scale c
Authors
Susan Zimmerman, David Wahl
Generalized models to estimate carbon and nitrogen stocks of organic soil horizons in Interior Alaska
Boreal ecosystems comprise one tenth of the world’s land surface and contain over 20 % of the global soil carbon (C) stocks. Boreal soils are unique in that its mineral soil is covered by what can be quite thick layers of organic soil. These organic soil layers, or horizons, can differ in their state of decomposition, source vegetation, and disturbance history. These differences result in varying
Authors
Kristen L. Manies, Mark Waldrop, Jennifer W. Harden
6&6: A transdisciplinary approach to art-science collaboration
Despite an historical connection between the arts and sciences, in the past century, the two disciplines have been greatly siloed. However, there is a renewed interest in collaboration across the arts and sciences to support conservation practice by understanding and communicating complex environmental, social, and cultural challenges in novel ways. 6&6 was created as a transdisciplinary art–scien
Authors
Sara Clark, Eric Magrane, Thomas Baumgartner, Scott E. K. Bennett, Micahel Bogan, Taylor Edwards, Mark A. Dimmitt, Heather Green, Charles Hedgcock, Bemjamin M. Johnson, Maria R. Johnson, Kathleen Velo, Benjamin T. Wilder
Life at the frozen limit: Microbial carbon metabolism across a Late Pleistocene permafrost chronosequence
Permafrost is an extreme habitat yet it hosts microbial populations that remain active over millennia. Using permafrost collected from a Pleistocene chronosequence (19 to 33 ka), we hypothesized that the functional genetic potential of microbial communities in permafrost would reflect microbial strategies to metabolize permafrost soluble organic matter (OM) in situ over geologic time. We also hypo
Authors
Mary-Cathrine Leewis, Renaud Berlemont, David C. Podgorski, Archana Srinivas, Phoebe Zito, Robert G. M. Spencer, Jack McFarland, Thomas A. Douglas, Christopher H. Conaway, Mark Waldrop, Rachel Mackelprang
Cryptic evolved melts beneath monotonous basaltic shield volcanoes in the Galápagos Archipelago
Many volcanoes erupt compositionally homogeneous magmas over timescales ranging from decades to millennia. This monotonous activity is thought to reflect a high degree of chemical homogeneity in their magmatic systems, leading to predictable eruptive behaviour. We combine petrological analyses of erupted crystals with new thermodynamic models to characterise the diversity of melts in magmatic syst
Authors
M.J. Stock, D. Geist, DA Neave, M.L.M . Gleason, B. Bernard, Keith A. Howard, I. Buisman, J. Maclennan
Mapping the 3-D extent of the Stillwater Complex, Montana—Implications for potential platinum group element exploration and development
Geophysical models characterize the exposed and interpreted buried extent of the Stillwater Complex, critical for understanding the origin of the layered mafic intrusion and its associated high-grade platinum group element resources. The 3D models, constrained by gravity, magnetic, xenolith, seismic, borehole, and rock property data indicate that the likely maximum extent of the Stillwater Complex
Authors
Carol A. Finn, Michael L. Zientek, Heather L. Parks, Dana E. Peterson