Published August 1980 | Version v1
Journal article Metadata-only

40Ar/39Ar age and thermal history of the Kirin chondrite

Creators

  • 1. Chinese Academy of Sciences, Peking (China). Inst. of Geology
  • 2. Australian National Univ., Canberra. Research School of Earth Sciences

Description

The Kirin meteorite, a large (> 2800 kg) H5 chondrite, fell in Kirin Province, China in 1976. A sample from each of the two largest fragments (K-1. K-2) yield 40Ar/39Ar total fusion ages of 3.63 +- 0.02 b.y. and 2.78 +- 0.02 b.y. respectively. 40Ar/40Ar age spectra show typical diffusional argon loss profiles. Maximum apparent ages of 4.36 b.y. (K-1) and approx. 4.0 b.y. (K-2) are interpreted as possible minimum estimates for the age of crystallization of the parent body. (orig./ME)

Additional details

Publishing Information

Journal Title
Earth Planet. Sci. Lett.
Journal Volume
49
Journal Issue
1
Series
Earth Planet. Sci. Lett.
Journal Page Range
117-131
ISSN
0012-821X

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
12587854
Subject category
S58: GEOSCIENCES;
Descriptors DEI
AGE ESTIMATION; ARGON ISOTOPES; CHONDRITES; CRYSTALLIZATION; FELDSPARS; GEOCHEMISTRY; METAMORPHISM; OLIVINE; THERMAL SHOCK
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; IRON COMPOUNDS; IRON SILICATES; MAGNESIUM COMPOUNDS; MAGNESIUM SILICATES; METEORITES; MINERALS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; SILICATES; SILICON COMPOUNDS; STONE METEORITES; TRANSITION ELEMENT COMPOUNDS