Browsing by Subject "Geochemistry"
Now showing items 1-6 of 6
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An Assessment of the Natural and Anthropogenic Geochemistry of the Red Mountain Creek Watershed: Ironton Mining District, Colorado
(2014-04-29)Red Mountain Creek is located in the rich mineralized San Juan Mountains of Southwestern Colorado, where mining from the mid 1800s through the late 1970s occurred. Sampling of the Uncompahgre River in the late 1970s, which ... -
Geomorphic and Geochemical Characteristics of Five Alpine Fens in the San Juan Mountains, Colorado
(2012-11-26)Fens are abundant in the San Juan Mountains. By exploring the geomorphology and geochemistry of fen wetlands, the functions that fens serve can be better understood. In this research, two main studies were conducted involving ... -
Paleoenvrironmental Controls on Diagenesis of Organich-Rich Shales in the Eagle Ford Group
(2014-08-27)Carbonate precipitation can be either promoted or inhibited by microbial processes in different redox zones. It is therefore possible for basin redox evolution to indirectly control early carbonate diagenesis and modify ... -
Precambrian Felsic and Mafic Dikes Along the Northwestern Margin of the Wyoming Province: Tectonic Constraints from the Southern Highland Mountains, Madison County, Montana
(2019-04-24)The Precambrian rocks of the southern Highland Mountains in Montana record the geologic history of the northwestern Wyoming craton. Multiple generations of mafic and felsic dikes cut the Archean gneissic fabric and are ... -
Texas Brazos River Flow and Mussel Growth Reconstructions Using Stable Oxygen, Hydrogen, and Carbon Isotopes and Trace Elements
(2015-12-14)The interaction between drought and river regulation is monitored to better understand river flow mixing, evaporation, and surface-groundwater exchange in changing regional climates and in increasingly regulated waterways. ... -
When Overturning Circulation Became Global: Insight into Its Timing from Neodymium Isotopes of Fossil Fish Teeth/Debris and Ferromanganese Oxyhydroxide Coatings in the Pacific Ocean
(2017-03-07)Reconstructions of overturning circulation from IODP Sites covering 40-65 Ma indicate a fundamentally different overturning mode (referred to herein as the Paleogene mode) compared to the modern. Significantly different ...