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Located south of Tucson in Pima County, Arizona, the 52,000 acre Santa Rita Experimental Range (SRER) was founded in 1903 and administered by the United States Forest Service until 1987, when the University of Arizona College of Agriculture took over administration of the site. The mission at the SRER is "to advance research and education on ...
The Index to Marine & Lacustrine Geological Samples is a collaboration between multiple institutions and agencies that operate geological sample repositories. The purpose of the database is to help researchers locate sea floor and lakebed cores, grabs, dredges, and drill samples in their collections.
The total amount of Hg discharged into Clear Lake over the past 15,000 years is estimated to be at least 2,400 metric tons." [57] [58] [59] The EPA-funded research by UC Davis found that total levels of mercury (TotHg) in the lake sediments has "not declined significantly a decade after" the remediation work in 1992 at Sulphur Bank Mine. [60]
Arizona is known as the Copper State because it produces two-thirds of US copper annually. Laramide copper porphyry deposits are common around Tucson and include the Twin Buttes, Sierrita-Esperanza, Rosemont, Silver Bell and Mission-Pima mines, as well as the historical Ajo mine to the west.
Arizona Power Company—later a part of the Arizona Public Service Company (APS)—began construction of the Childs Power Plant in 1908. Because the land around Fossil Creek consists mainly of mountainous terrain and canyons, and the nearest railroad station was in Mayer , more than 400 mules and 600 men were used to pull more than 150 wagons ...
Fossil Creek (Yavapai: Hakhavsuwa or Vialnyucha) is a perennial stream accessed by forest roads near the community of Camp Verde in the U.S. state of Arizona.Primary access is from Forest Road 708 off Arizona State Route 260 east of Camp Verde.
Clear Lake National Wildlife Refuge is a National Wildlife Refuge of the United States in northeastern California.It includes about 20,000 acres (81 km 2) of open water surrounded by over 26,000 acres (110 km 2) of upland bunchgrass, low sagebrush, and juniper habitat. small, rocky islands in the wetlands provide breeding sites for American white pelicans, double-crested cormorants, and other ...
Eastern end of the West Clear Creek Wilderness. The West Clear Creek Wilderness is a 15,238-acre (6,167 ha) wilderness area in the U.S. state of Arizona.West Clear Creek is formed by the junction of Willow Creek and Clover Creek in the Mogollon Rim, which is part of the Colorado Plateau; the Mogollon Rim is the major part of the Arizona transition zone at the southwest of the Colorado Plateau ...