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U-Pb data for: Monazite and cassiterite U-Pb dating of the Abu Dabbab rare-metal granite, Egypt: Late Cryogenian metalliferous granite magmatism in the Arabian-Nubian Shield U-Pb data for: Monazite and cassiterite U-Pb dating of the Abu Dabbab rare-metal granite, Egypt: Late Cryogenian metalliferous granite magmatism in the Arabian-Nubian Shield
Cassiterite (SnO2) samples were collected from alluvial ore concentrate from the Abu Dabbab Granite in eastern Egypt. Samples (in the form of mounted loose grains) were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) system at the U.S. Geological Survey in Denver, Colorado in February 2019. This data release...
Concentrations of pesticides associated with streambed sediment and biofilm in California streams, 2017 Concentrations of pesticides associated with streambed sediment and biofilm in California streams, 2017
Hydrophobic (sediment-associated) pesticides were measured in sediment samples collected from 82 wadeable streams and in biofilm in 54 of those streams in the Central California Foothills and Coastal Mountains ecoregion.115 current-use and 3 legacy pesticides were measured in stream sediment; 93 of the current-use pesticides and the same 3 legacy pesticides were measured in biofilm. On...
Gas emission and ground temperature measurements at Puhimau thermal area, Kilauea Volcano, Hawaii Gas emission and ground temperature measurements at Puhimau thermal area, Kilauea Volcano, Hawaii
Puhimau thermal area, located in the upper East Rift Zone of K?lauea Volcano, Hawai`i formed around 1936 when heat and gases migrated to the surface following a magma intrusion. As of April 2020, the area is about 0.2 km2 in size with regions of steaming ground. The site may be valuable for monitoring changes in gas and heat emissions related to movement of magma down the rift zone. On...
Topographic and Sediment Size Data from Fountain Creek between Colorado Springs and the Confluence with the Arkansas River, Colorado, 2019 Topographic and Sediment Size Data from Fountain Creek between Colorado Springs and the Confluence with the Arkansas River, Colorado, 2019
In 2012, the U.S. Geological Survey (USGS) in cooperation with Colorado Springs Utilities selected 10 study areas along Fountain Creek between Colorado Springs, Colorado and the confluence of Fountain Creek with the Arkansas River for annual geomorphic monitoring. The purpose of this data release is to present topographic survey data, rasters , and sediment size data collected in 2019 as...
Fecal samples collected in May, August, and October 2014 from Little Book Cliffs Herd Management Area, Colorado, for determination of diet, persistence of DNA in the environment, individual identity, and seed germination. Fecal samples collected in May, August, and October 2014 from Little Book Cliffs Herd Management Area, Colorado, for determination of diet, persistence of DNA in the environment, individual identity, and seed germination.
These data were collected in May, August, and October in west central Colorado from a Bureau of Land Management wild horse herd management area (HMA). Samples were already on the ground, not fresh from the horse. The Diet dataset includes proportion of plant species found in fecal samples using two different lab techniques -- plant DNA bar-coding,and microhistology. Results of both...
Vegetation measurements of production and offtake in cottonwood communities of the Great Sand Dunes ecosystem, Colorado, 2005-2009. Vegetation measurements of production and offtake in cottonwood communities of the Great Sand Dunes ecosystem, Colorado, 2005-2009.
These data provide measurements of cottonwood production and herbaceous production in cottonwood communities of the Great Sand Dunes National Park ecosystem in the San Luis Valley of Colorado, from 2005-2009. These data also include cottonwood browsing rates. The study area was stratified into 2 ungulate strata: areas with elk and bison herbivory, and areas with just elk herbivory (bison...