Preliminary Hydrogeologic Assessment near Tassi and Pakoon Springs, Western Part of Grand Canyon-Parashant National Monument, Arizona
Truini M. 2013. Preliminary Hydrogeologic Assessment near Tassi and Pakoon Springs, Western Part of Grand Canyon-Parashant National Monument, Arizona. U.S. Geological Survey (USGS) Scientific Investigations Report. 2012–5276 or SIR 2012-5276. Reston, Virginia
Water discharging from Tassi and Pakoon Springs has a major-ion chemistry similar to that of other springs in the western part of Grand Canyon-Parashant. Stable-isotopic signatures for oxygen-18 and hydrogen-2 are depleted in the water from both Tassi and Pakoon Springs in comparison to other springs on the Arizona Strip. Tassi Spring discharges from multiple seeps along the Wheeler Fault, and the depleted isotopic signatures suggest that water may be flowing from multiple places into Lake Mead and seems to have a higher elevation or an older climate source. Elevated water temperatures and a depleted stable-isotopic signature for Pakoon Springs suggest that the water may be traveling along a deep circulating flowpath, have multiple sources of water, been recharged at a high elevation, and (or) has an older climate source.
- Type
- Published Report
- Authors
- Truini, Margot
- Date of Issue
- 2013
- Units
- PARA
- Keywords
- Arizona, Geochemistry, geology, Grand Wash, Grand Wash Rough, Lake Mead, Nevada, Pakoon Spring, Tassi Spring, Wheeler fault
- Subjects
- Ecological Framework: Water | Hydrology | Groundwater Dynamics , Ecological Framework: Water | Water Quality | Water Chemistry