Published February 12, 1987 | Version v1
Journal article Metadata-only

Short-lived radioactive disequilibria and magma dynamics in Etna volcano

Creators

  • 1. Clermont-Ferrand-2 Univ., 63 - Aubiere (France)
  • 2. Grenoble-1 Univ., 38 (France). Inst. des Sciences Nucleaires
  • 3. Laboratoire de Geomagnetisme, 94100-St Maur des Fosses (France)
  • 4. Institut Dolomieu, Grenoble (France)

Description

New precise results are presented on the short-lived disequilibria in some recent lavas from Etna volcano. The data show that a Ra enrichment took place in the Etna magma between 100 and 8,000 yr ago. Moreover, there is a clear correlation between (226Ra/230Th) activity ratios and the degree of differentiation of the magma, as indicated by its Th content. This correlation is interpreted as the result of mixing of a differentiated magma and a deep basic magma with a high (226Ra/230Th) ratio. (author)

Additional details

Publishing Information

Journal Title
Nature (London)
Journal Volume
325
Journal Issue
6105
Series
Nature (London).
Journal Page Range
607-609
ISSN
0028-0836
CODEN
NATUA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
18068568
Subject category
S54: ENVIRONMENTAL SCIENCES;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
CORRELATIONS; EXPERIMENTAL DATA; IGNEOUS ROCKS; ISOTOPE RATIO; ITALY; LAVA; LEAD 210; RADIUM; RADIUM 226; THORIUM; THORIUM ISOTOPES; THORIUM 230; URANIUM; URANIUM ISOTOPES; VOLCANOES
Descriptors DEC
ACTINIDE NUCLEI; ACTINIDES; ALKALINE EARTH METALS; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; DATA; DEVELOPED COUNTRIES; ELEMENTS; EUROPE; EVEN-EVEN NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; INFORMATION; ISOTOPES; LEAD ISOTOPES; METALS; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; RADIUM ISOTOPES; ROCKS; SPONTANEOUS FISSION RADIOISOTO; YEARS LIVING RADIOISOTOPES