Article
Geosciences, Multidisciplinary
Andrew P. Walters, Alan R. Carroll, Stephen R. Meyers, Tim K. Lowenstein
Summary: Lacustrine strata are valuable terrestrial paleoclimate archives with high resolution. This study uses X-ray fluorescence core scanning to analyze the long-term evolution of transfer functions in an ancient lacustrine record. The analysis reveals a shift in the frequency distribution of Milankovitch-band variance and a decline in evaporite beds, indicating the influence of evolving basin morphology on depositional transfer functions. These findings emphasize the importance of integrating basin and depositional system history with cyclostratigraphic interpretation of astronomical signals in stratigraphic records.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geology
Elliot Andrew Jagniecki, Tim K. Lowenstein, Robert Demicco, M'bark Baddouh, Alan R. Carroll, Brian L. Beard, Clark M. Johnson
Summary: The study reveals that the carbonate mounds formed in the Green River Formation in Wyoming, USA were a result of significant spring discharge influenced by Palaeozoic carbonates. This finding highlights the importance of understanding paleohydrology in ancient lake systems.
Article
Geography, Physical
M'bark Baddouh, Alan R. Carroll, Elliot A. Jagniecki, Brian L. Beard, Tim K. Lowenstein, Clark M. Johnson
Summary: The isotopic trends of tufa in the Little Mesa area of the northern Bridger Basin reflect a mixing contribution from groundwater and lake water, resulting in different radiogenic ratios due to geological influences. This supports the hypothesis that climatic changes modulate expansions and contractions of Lake Gosiute water levels. Groundwater discharge may play a significant role in the covariance between Sr-87/Sr-86 ratios, delta C-13 and delta O-18 in closed paleolake systems.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Energy & Fuels
Terri Olson, Brad Michalchuk, Paul Hackley, Brett Valentine, Jason Parker, Ricardo San Martin
Summary: The nature of pore systems in the Powder River Basin's Mowry and Niobrara shales plays a critical role in evaluating production potential and finding sweet spots. Understanding variation in pore type, size, and connectivity, as well as their relationships with mineralogy and fabric, helps determine prospectivity in different parts of the basin. Imaging techniques reveal the presence of migrated organic matter and its impact on wettability alteration, controlled by clay morphology and mineral grain framework. Carbonate content is a good indicator of reservoir quality in the Niobrara, while high recrystallized microquartz content is associated with the best reservoir intervals in the Mowry.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Benjamin T. Bruck, Brad S. Singer, Mark D. Schmitz, Alan R. Carroll, Stephen Meyers, Andrew P. Walters, Brian R. Jicha
Summary: The Wilkins Peak Member of the Green River Formation in Wyoming, USA, contains valuable records of early Eocene terrestrial climate. Age-depth models for three sites were developed using a Bayesian framework and new radioisotopic ages. The models confirm the pulsating rhythm of the WPM facies and their correspondence with astronomical solutions.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geology
Youwei Wang, Timothy F. Baars, Hiranya Sahoo, Joep E. A. Storms, Allard W. Martinius, Philip Gingerich, Hemmo A. Abels
Summary: A high-resolution study of the Lower Eocene Willwood Formation in the Bighorn Basin, Wyoming, USA, reveals the presence of four different river planform styles, with braided-like and sinuous-like channels being the most dominant types. The study supports existing basin-scale depositional models that suggest river supply mainly comes from the west and may be influenced by paleoclimate changes.
Article
Geosciences, Multidisciplinary
Katherine L. French, Justin E. Birdwell, Paul G. Lillis
Summary: This study used various data to evaluate the factors influencing organic matter accumulation during the deposition of the Mowry Shale. The results showed that redox-driven preservation is closely related to changes in organic matter content. The study also found that productivity is not the primary driver of organic enrichment in the Mowry Shale, and the relative contribution of terrestrial organic matter increases in the upper Mowry Shale and overlying Frontier Formation.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Green & Sustainable Science & Technology
D. A. Bagdonas, A. J. Enriquez, K. A. Coddington, D. C. Finnoff, J. F. McLaughlin, M. D. Bazilian, E. H. Phillips, T. L. McLing
Summary: Domestic rare earth element sources and production in the United States are limited and reliant on processing overseas. Recent investigations have focused on the potential of unconventional ore stocks, including coal and coal byproducts. This study specifically examines coal byproducts from coal burning power stations in Wyoming's Powder River Basin and finds that they have consistently high concentrations of rare earth elements, making them a promising potential resource. Economic feasibility analysis shows that extracting rare earths from these coal byproducts could be more cost-effective than mining. However, the profitability is highly sensitive to rare earth prices. Overall, developing coal byproducts as a partial solution to domestic rare earth element shortages shows promise.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Environmental Sciences
Huifang Liu, Pengwei Yuan, Xiaoyi Shi, Huimei Liu, Jinjiao Sun, Xiaoqing Dong
Summary: This paper constructs a green innovation city network and empirically tests its evolution process and carbon emission effect. The study finds that the strong ties among green innovation city networks are mainly distributed in and around provincial capital cities and the Yellow River Basin. The carbon emissions of cities in the Yellow River Basin are generally increasing, but at a slower rate. The impact of the green innovation city network on carbon emissions mainly comes from its externality's direct and indirect effects.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Caleb G. Pan, Peter B. Kirchner, John S. Kimball, Jinyang Du, Michael A. Rawlins
Summary: The study developed a regional snow phenology record using satellite remote sensing, investigating the relationship between snowmelt, spring flood pulse, and river ice breakup in the Yukon River basin. Results showed the potential value of satellite-based snow metrics for regional monitoring and forecasting of the spring flood pulse and river ice breakup timing.
Article
Green & Sustainable Science & Technology
O. A. Fasipe, O. C. Izinyon, J. O. Ehiorobo
Summary: This study utilized spatial tools to survey hydropower potential locations in the Osse Sub-basin, identifying 18 potential small hydropower project sites by computing peak discharge and considering catchment parameters. It establishes the first clean development mechanism procedure in Nigeria, providing a reference for future development of clean hydropower resources.
Article
Environmental Sciences
Jack Kurki-Fox, Barbara A. Doll, Bonnie Monteleone, Kayla West, Gloria Putnam, Liam Kelleher, Stefan Krause, Uwe Schneidewind
Summary: While the presence of microplastics (MP) in aquatic ecosystems worldwide is known, there is still a lack of understanding regarding the factors and controls influencing their occurrence and distribution. This study examined MP concentrations in water and streambed sediment at various locations in the Neuse River Basin in North Carolina, USA. MP particles with a diameter greater than 335 µm were found in all water samples, with concentrations ranging from 0.02 to 221 particles per cubic meter. Urban streams had the highest concentrations, and a significant correlation between streamflow and MP concentration was observed in urbanized areas. The most common polymer types identified for MPs larger than 335 µm were polyethylene, polypropylene, and polystyrene. When smaller mesh sizes (>64 µm) were used for analysis, a higher concentration of MP particles, with the most common polymer type being polyethylene terephthalate, was observed. The ratio of MP concentrations between the two mesh sizes ranged from 35 to 375, indicating an underestimation of MPs by the larger mesh. MPs were also detected in 14 out of 15 sediment samples. The findings of this study provide valuable insights into the spatial distribution and transport of MPs in river basins, as well as the influences of land cover, hydrology, and sampling methods on MP concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Water Resources
Coleman J. Barrie, Todd C. Rasmussen, E. William W. Tollner, Stephen T. Golladay, Steven Brantley
Summary: This study investigates the stream-aquifer interactions in the Lower Flint River Basin in Georgia, USA. The results show the effects of local water use on streamflow and provide new insights into hydraulic processes in karst systems. It also estimates hydraulic parameters for future modeling efforts.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Environmental Sciences
Shuai Shen, Kewen Luo, Teng Ma, Yao Du, Xing Liang, Jingwei Zhang, Zhihui Han, Xinyao Ye
Summary: This study investigates the burial characteristics of nitrogen and the controlling mechanisms of nitrogen enrichment in groundwater in the central Yangtze River Basin. The results show that the distribution of buried nitrogen in sediments follows a similar trend in two cores, with high concentrations at the surface layer and stable concentrations in the deep aquifer. The burial characteristics are controlled by the evolution of depositional environment, with sedimentary facies determining the total organic nitrogen concentrations and paleoclimate regulating the intensity of nitrogen transformation processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Tianshu Quan, Hui Zhang, Jing Li, Binqiang Lu
Summary: This paper examines the spatial association network of green low-carbon development in the Xin'an River basin and explores the role of the Basin Horizontal Ecological Compensation Mechanism (BHEC) in promoting this development. The results show that there is a universal spatial connection in the basin, but it is uneven among cities, with a central region as the core and the north and south regions approaching the core. BHEC contributes to green low-carbon development through green technology progress, green technology efficiency, and public participation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
