70 results — topic: Environmental Contamination
U-Pb zircon data for: The Poncha Pass and Deadman Creek areas, northern Sangre de Cristo Mountains of south-central Colorado
Geologic mapping, characterization of geologic structures, and sampling for geochronology was completed in two areas of the northwestern Sangre de Cristo Mountains from 2011 through 2017. This data release provides the raw analytical data, metadata and sample information for 20 zircon U-Pb age analy
U-Pb detrital zircon data for: lower Paleozoic sedimentary rocks near Silverton, CO USA
This Laser ablation ICPMS U-Pb detrital zircon data set supports mapping and stratigraphic interpretations of the Upper Devonian Ignacio Formation in southwestern Colorado (Silverton area). All samples were collected from a measured stratigraphic section called "Sultan Creek South" located at 37.710
Secondary compounds in floral rewards of toxic rangeland plants: impacts on pollinators
The study of plant secondary chemistry has been essential in understanding plant consumption by herbivores. There is growing evidence that secondary compounds also occur in floral rewards, including nectar and pollen. Many pollinators are generalist nectar and pollen foragers and thus are exposed to
Dose-dependent effects of nectar alkaloids in a montane plant-pollinator community
SummaryAlthough secondary metabolites are prevalent in floral nectar, the ecological consequences for pollinators and pollination remain relatively unexplored. While often deterrent to pollinators at high concentrations, secondary metabolite concentrations in nectar tend to be much lower than second
A comparative study of plant species diversity on three historic mining sites
In order to determine the degree of ecological damage inflicted as a result of mining operations around the Gothic area, three tailings piles were identified in Gothic and Crested Butte and an observational study of plant species on and around them carried out. It was found that both total numbers o
Data from: Evolution of specialization: a phylogenetic study of host range in the red milkweed beetle (Tetraopes tetraophthalmus)
Specialization is common in most lineages of insect herbivores, one of the most diverse groups of organisms on earth. To address how and why specialization is maintained over evolutionary time, we hypothesized that plant defense and other ecological attributes of potential host plants would predict
Airborne geophysical survey: Montrose 1° x 2° Quadrangle
Aeromagnetic and aeroradiometric data were collected along flight lines by instruments in an aircraft that recorded magnetic-field and radiometric values and locations. The magnetic data set presents latitude, longitude, altitude, and magnetic-field values. Geologic symbols or codes are also include
Airborne geophysical survey: Montrose 1° x 2° Quadrangle
Aeromagnetic and aeroradiometric data were collected along flight lines by instruments in an aircraft that recorded magnetic-field and radiometric values and locations. The magnetic data set presents latitude, longitude, altitude, and magnetic-field values. Geologic symbols or codes are also include
Selenium impacts on razorback sucker, Colorado River, Colorado
Results from this study suggest that selenium contamination in parts of the upper basin of the Colorado River should be a major concern to recovery efforts for endangered fish.
Structure-activity relationships of norditerpenoid alkaloids occurring in toxic larkspur <i></i>Delphinium<i></i> species
Finding of No Significant Impact Proposed Provision of a Water Supply System Gunnison Uranium Mill Tailings Site. Gunnison, Colorado.
US Department of Energy. 1992. Originally signed by: Paul L. Ziemer Ph.D
Environmental Assessment of Remedial Action at the Gunnison Uranium Mill Tailings Site.
Albert R. Chernoff. US DOE. May 1992.
DOE Uranium Mill Tailings Remedial Action Monthly Status Report
Steven C. Hamp. November 5, 1992.
DOE Remedial Action at the Gunnison Uranium Mill Tailings Site
Steven C. Hamp. October 1992.
Briefing Paper Gunnison Colorado Uranium Mill Tailings Remedial Action (UMTRA) Project Groundbreaking Ceremony
July 1992.
National Radon Measurement Proficiency Program
Office of Radiation Programs.1991
Draft: Environmental Assessment of the Proposed Remedial Action at the Gunnison Uranium Mill Tailings Site
U.S. Department of Energy. UMTRA Project Office. 1990.
Draft Environmental Impact Statement
US Department of Energy.?Uranium Mill Tailings Remedial Action. 1990.
Attachment 4 of Remedial Action Plan and Site Design for Stabilization of the Inactive Uranium Mill Tailings Site at Gunnison, CO
US Department of Energy. June 1990.
Geology of the uranium deposits in the Cochetopa mining district, Saguache and Gunnison counties, Colorado
Vein-type uranium deposits of geologic interest and commercial significance occur in the Cochetopa mining district, Saguache and Gunnison Counties, Colorado. The uranium minerals in these deposits have been precipitated from hypogene solutions probably related to Tertiary igneous activity in the dis