Participation in the Creede Scientific Drilling Project as on-site Principal Investigator. Final report
Scientific questions addressed by the Creede Scientific Drilling Project were as follows (Bethke et al., 1992): (1) Did the lacustrine sedimentary sequence filling the moat of Creede caldera serve as reservoir for the moderately-saline aqueous fluids which scavenged and then transported silver and base metals to ore-depositional sites for the rich epithermal deposits of the Creede mining district (Fig. 1)?; (2) what were the chemical and isotopic compositions of these fluids prior to their entry into the Creede fracture (later vein) system; (3) how did these chemical and isotopic compositions evolve in transit to the ore-depositional site?; (4) how did the Creede caldera form and evolve?; (5) what is the present thermal regime in Creede caldera moat? {hor_ellipsis}the, paleothermal regime?; (5) what are the hydrologic transport properties of the moat sedimentary rocks?; (6) what diagenetic or hydrothermal veins disrupt the moat sedimentary sequence, and what do their paragenetic relationships, mineralogic compositions, fluid-inclusion characteristics, and stable-isotope systematics reveal about evolution of the Creede hydrothermal system? Two Creede caldera moat drill holes were completed for this project.
- Research Organization:
- Utah Univ. Research Inst., Salt Lake City, UT (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Geological Survey, Reston, VA (United States)
- DOE Contract Number:
- FG02-91ER14207
- OSTI ID:
- 10127451
- Report Number(s):
- DOE/ER/14207-2; ESL-92034-FR; ON: DE93008296
- Resource Relation:
- Other Information: PBD: Jun 1992
- Country of Publication:
- United States
- Language:
- English
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