Phase chemistry of the Umtanum basalt, a reference repository host in the Columbia Plateau
Conference
·
OSTI ID:6452689
Kilogram quantities of reference Umtanum basalt collected from a surface exposure are compared with Umtanum basalt DC-2 core samples extracted from the central Pasco Basin. The two materials are similar in texture and phase composition, suggesting that sorption, waste/rock/water interaction experiments, and radiation effects studies using reference basalt will successfully simulate the proposed Umtanum repository environment. Textural studies of DC-2 core samples also show that dissolution of mesostasis is restricted to flow top breccia with precipitation of secondary minerals in flow top, entablature, and colonnade sealing fissures and vesicles.
- Research Organization:
- Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations; Smithsonian Institution, Washington, DC (USA)
- DOE Contract Number:
- AC06-77RL01030
- OSTI ID:
- 6452689
- Report Number(s):
- RHO-BWI-SA-77; CONF-801124-51; ON: DE81026577
- Country of Publication:
- United States
- Language:
- English
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