Fission track ages of the Hyugami Lava from central Kyushu
Creators
- 1. Kyushu Univ., Fukuoka (Japan). Research Inst. of Science and Industry
Description
The fission track dating has been carried out on zircon separated from six specimens of the Hyugami Lava which outcrops in Oita Prefecture. Considering both these fission track ages and the results of modal analysis of the rocks, HW-20(two-pyroxene hornblende andesite; 0.42 +- 0.09 Ma) may belong to the middle Pleistocene Bungo Volcanic Rocks, and HW-3(altered hornblende andesite, borecore; 1.56 +- 0.41 Ma), HW-5(altered hornblende andesite, borecore; 1.80 +- 0.29 Ma) and HW-7(biotite-bearing hornblende andesite: 1.78 +- 0.32 Ma) to the early Pleistocene Hohi Volcanic Rocks. However, HW-12(biotite-bearing hornblende andesite; 2.21 +- 0.29 Ma) and HW-19(two-pyroxene hornblende andesite; 2.85 +- 0.49 Ma) erupted in the Pliocene and come under none of known volcanic groups in centeral Kyushu. (J.P.N.)
Additional details
Publishing Information
- Journal Title
- Ganseki Kobutsu Kosho Gakkai-Shi
- Journal Volume
- 78
- Journal Issue
- 2
- Series
- Ganseki Kobutsu Kosho Gakkai-Shi.
- Journal Page Range
- 65-69
- ISSN
- 0021-4825
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 15032466
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- AGE ESTIMATION; EXPERIMENTAL DATA; FISSION TRACKS; HORNBLENDE; IGNEOUS ROCKS; JAPAN; STRATIGRAPHY; ZIRCON
- Descriptors DEC
- AMPHIBOLE; ASIA; DATA; DEVELOPED COUNTRIES; INFORMATION; MINERALS; NUMERICAL DATA; OXYGEN COMPOUNDS; PARTICLE TRACKS; ROCKS; SILICATES; SILICON COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; ZIRCONIUM SILICATES