Published 1995 | Version v1
Journal article Metadata-only

Nuclear geochronology. Chapter 6: Sedimentary rocks dating by the Rubidium-Strontium (Rb/Sr) and Potassium-Argon (K/Ar) radiometric methods

Creators

  • 1. Universidade do Estado, Rio de Janeiro, RJ (Brazil). Inst. de Geociencias
  • 2. Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Inst. de Geociencias
  • 3. Sao Paulo Univ., SP (Brazil). Inst. de Geociencias
  • 4. Ceara Univ., Fortaleza, CE (Brazil). Dept. de Geologia

Description

The paper deals with the Rubidium/Strontium (Rb/Sr) and Potassium/Argon (K/Ar) radiometric methods application in the sedimentary rocks dating, including the methodology, the method restrictions and the ages meaning. The work concludes that the sedimentary rocks radiometric dating, by the Rb/Sr method is possible, furnishing results geologically significant. The 87 Sr/86 Sr of marine carbonates has propitiated, mainly in the last years, the dating possibility of sedimentary rocks. The K/Ar radiometric method has been applied to determine the diagenetic events age of the sedimentary rocks, including its application in mesozoic and recent rocks, where the RB/Sr radiometric method presents some limitations

Additional details

Additional titles

Original title (Portuguese)
Geocronologia nuclear. Capitulo 6: Datacao de rochas sedimentares pelos metodos radiometricos rubidio-estroncio (Rb/Sr) e potassio-argonio (K/Ar)

Publishing Information

Journal Title
Revista de Geologia
Journal Volume
8
Journal Page Range
p. 187-223
ISSN
0103-2410
CODEN
RGEOEP

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
30009747
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ARGON ISOTOPES; CARBONATE ROCKS; DIAGENESIS; ISOTOPE DATING; POTASSIUM ISOTOPES; RADIOMETRIC ANALYSIS; RUBIDIUM ISOTOPES; SEDIMENTARY ROCKS; SEDIMENTATION; SHALES; STRONTIUM 86; STRONTIUM 87; STRONTIUM ISOTOPES
Descriptors DEC
AGE ESTIMATION; ALKALINE EARTH ISOTOPES; BETA DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; ELECTRON CAPTURE RADIOISOTOPES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; NUCLEI; QUANTITATIVE CHEMICAL ANALYSIS; RADIOISOTOPES; ROCKS; SEDIMENTARY ROCKS; STABLE ISOTOPES; STRONTIUM ISOTOPES

Optional Information

Notes
71 refs., 18 figs.