Rock property analysis of core samples from the Yucca Mountain UE25a-1 borehole, Nevada Test Site, Nevada
Core samples from the Yucca Mountain UE25a-1 borehole were measured for bulk density, porosity, resistivity, induced polarization, compressional sonic velocity, hydraulic conductivity (water permeability), magnetic susceptibility, and remanent magnetization as part of a large-scale site evaluation program designed to identify suitable locations for the containment of radioactive waste products. The samples are representative of stratigraphic units of the Paintbrush Tuff, the tuffaceous beds of Calico Hills, and the Crater Flat Tuff. Resistivity and bulk density values of water-saturated samples closely approximate those at near in-situ levels of water saturation and variations in resistivity, density, and sonic velocity are largely dependent upon porosity. The Tiva Canyon Member of the Paintbrush Tuff has an inversely polarized component of remanent magnetization and the entire Paintbrush has a magnetization appreciably greater than the underlying formations. There is no direct correlation between porosity and permeability; the latter varying widely and often decreasing with time as unconsolidated particles within the pore network are repositioned so as to impede the continued flow of water through the rock.
- Research Organization:
- US Geological Survey, Denver, CO (United States)
- DOE Contract Number:
- AI08-78ET44802
- OSTI ID:
- 59827
- Report Number(s):
- USGS-OFR-81-1338; ON: DE86008363
- Resource Relation:
- Other Information: PBD: 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rock property analysis of core samples from the Calico Hills UE25a-3 borehole, Nevada Test Site, Nevada
Water permeability and related rock properties measured on core samples from the Yucca Mountain USW GU-3/G-3 and USW G-4 boreholes, Nevada Test Site, Nevada