RADIOACTIVE MINERALIZATIONS IN THE CENTRAL REGIONS OF SPAIN
- Alia, M.
- [Place of publication not identified] : [publisher not identified], 1959.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1959.
- Physical Description:
- microopaque : positive ; 8 x 13 cm
- Additional Creators:
- Bonet, C., de Pedro, F., Polo, J. A. F., and Rebollo, J. L.
- The prospecting carried out to date has revealed the presence of radioactive mineralizations in the regions of Central Spain, in the Cordillera Central, and in the Tertiary of the Tagus Depression. The Cordillera Central is made up, in the region studied, of the Gredos and Guadarrama ranges. They both consist of granitic and metamorphic rocks of Hercynian origin. The Alpine movements account for the rise of the blocks which make up this range, usually as a series of horsts. Three different types of radioactive mineralizations are described: in micacites, aplites, and veins. A geological study, complemented by a morphological, particularly tectonic, review, warrants the conclusion that, during the Hercynian cycle, there was a first uraniferous concentration in the more acid eruptive rocks, then a subsequent and more localized one at the favor of the stress structures of Alpid origin. It is believed that the mineralizations find their origin in the leaching of strata which are richer in radioactive minerals, with concentration taking place where various favorable levels and structures are present. (auth)
- Report Numbers:
- Other Subject(s):
- U.S. Atomic Energy Commission depository collection.
- NSA number: NSA-13-006629
OSTI Identifier 4284560
Research organization: Junta de Energia Nuclear, Madrid.
View MARC record | catkey: 38046178