CORRELATION AND CHRONOLOGY OF ORE DEPOSITS AND VOLCANIC ROCKS. Annual Progress Report No. 4
Technical Report
·
OSTI ID:4801263
Results are reported from investigations of the helium method of age determinations for minerals, the use of the helium method and other methods such as the K-Ar and common Pb isotope techniques to determine the age of ore deposition in areas in the Southwestern United States, application of geochemical- petrographic-geologic correlation techniques to the problem of volcanic stratigraphy in the Southwest, and the relationship of ore deposttion to volcanism. Appended are results of an investigation of color centers in fluorite with application to geologic time, results from a study of uranium and thorium diffusion in magnetite, results of age measurements on Older PreCambrian ignimbrite from central Arizona, results of investigations of the helium dating method by stable isotope dilution technique, and the results of field, microscopic, and geochemical studies of the Cat Mountain rhyolite in the southern portion of the Tucson Mountains, Pima County, Arizona. (C.H.)
- Research Organization:
- ARizona. Univ., Tucson. Geochronology Labs.
- NSA Number:
- NSA-16-027421
- OSTI ID:
- 4801263
- Report Number(s):
- TID-16348
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AGE ESTIMATION
ARGON
CALCIUM FLUORIDES
COLOR
CONFIGURATION
CRYSTALS
DEFECTS
DEPOSITS
DIFFUSION
DISTRIBUTION
FLUORITE
GEOCHEMISTRY
GEOLOGY
GEOLOGY, MINERALOGY, AND METEOROLOGY
HELIUM
IGNEOUS ROCKS
IGNIMBRITES
IRON OXIDES
ISOTOPE DILUTION
ISOTOPES
LEAD ISOTOPES
MAGNETITE
MICROSCOPY
MINERALS
ORES
OXIDES
PETROGRAPHY
POTASSIUM
QUANTITY RATIO
RHYOLITES
SOLUTIONS
THORIUM
URANIUM
VOLCANICS
ARGON
CALCIUM FLUORIDES
COLOR
CONFIGURATION
CRYSTALS
DEFECTS
DEPOSITS
DIFFUSION
DISTRIBUTION
FLUORITE
GEOCHEMISTRY
GEOLOGY
GEOLOGY, MINERALOGY, AND METEOROLOGY
HELIUM
IGNEOUS ROCKS
IGNIMBRITES
IRON OXIDES
ISOTOPE DILUTION
ISOTOPES
LEAD ISOTOPES
MAGNETITE
MICROSCOPY
MINERALS
ORES
OXIDES
PETROGRAPHY
POTASSIUM
QUANTITY RATIO
RHYOLITES
SOLUTIONS
THORIUM
URANIUM
VOLCANICS