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Exceso de helio-4 en el lago Teggau: posibilidades para un cuerpo de mineral de uranio
Science (New York, N.Y.)
|February 17, 1978
Resumen
El exceso de helio-4 (4He) en el lago Teggau sugiere un depósito cercano de uranio. Un modelo indica que más de 10.000 kg de uranio, probablemente de los diques de uraninita, causaron los altos niveles de (4) He.
Área de la Ciencia:
- La geoquímica es la geoquímica.
- La geoquímica de los isótopos es la geoquímica de los isótopos.
- La hidrogeología es la hidrogeología.
Sus antecedentes:
- Se detectaron concentraciones elevadas de helio-4 (4He) en el lago Teggau, que exceden la solubilidad normal en más de cinco veces.
- El helio-4 es un gas noble producido por la desintegración radiactiva, principalmente de uranio y torio.
Objetivo del estudio:
- Para investigar la fuente de las concentraciones anómalas de (4) He en el lago Teggau.
- Para modelar los factores geológicos que contribuyen al exceso de (4) He observado.
Principales métodos:
- Mediciones de campo de las concentraciones de (4) He en el agua de los lagos.
- Modelado geológico para correlacionar (4) los niveles de He con fuentes potenciales de uranio.
- Análisis de datos geológicos para el potencial de depósito de uranio.
Principales resultados:
- Se midió un exceso significativo de (4) He, más de cinco veces el límite de solubilidad, en el lago Teggau.
- El modelado geológico apunta a una masa de uranio adyacente superior a 10.000 kilogramos como fuente.
- La zona exhibe condiciones favorables para los depósitos de uranio pegmatítico.
Conclusiones:
- La liberación de (4) He atrapado de los diques de uraninita de más de 30 metros cúbicos (que contienen 1% de U3O8) es la explicación más plausible para el exceso de (4) He.
- Los hallazgos sugieren que la anomalía (4) He del lago Teggau está relacionada con la mineralización de uranio subterráneo.
- Este estudio pone de relieve la utilidad de la geoquímica de gases nobles en la exploración de depósitos de uranio.
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