Published December 1981
| Version v1
Journal article
Fission track ages of the quartz diorite porphyrite and Ishizaka rhyolite near Otari hot spring, Kitaazumi, Nagano prefecture
- 1. Geological Survey of Japan, Yatabe, Ibaraki (Japan)
Description
Fission track datings were performed on the samples of the quartz diorite porphyrite and Ishizaka rhyolite near Otari hot spring, Nagano Prefecture, Central Japan. Ishizaka rhyolite has already been dated as 58 Ma by K-Ar method and is dated as 60.9 +- 6.9 Ma by FT method. These ages agree well within the limits of errors. The quartz diorite porphyrite is dated as 1.03 +- 0.32 Ma by FT method. This age is much younger than the age so far expected stratigraphically. This result suggests that the intrusive rock is very hopeful as a heat source for geothermal energy in this area. (author)
Additional details
Additional titles
- Subtitle (English)
- Fission track ages of the igneous rocks related to geothermal activities in Japan, (3)
Publishing Information
- Journal Title
- Chishitsu Chosajo Geppo
- Journal Volume
- 32
- Journal Issue
- 12
- Series
- Chishitsu Chosajo Geppo.
- Journal Page Range
- 717-721
- ISSN
- 0016-7665
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 14795261
- Subject category
- S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- AGE ESTIMATION; EXPERIMENTAL DATA; FISSION TRACKS; GEOLOGIC STRATA; GEOTHERMAL ENERGY; JAPAN; RHYOLITES; STRATIGRAPHY; URANIUM 238; ZIRCON
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ASIA; DATA; DEVELOPED COUNTRIES; ENERGY; ENERGY SOURCES; EVEN-EVEN NUCLEI; GEOLOGIC STRUCTURES; HEAVY NUCLEI; IGNEOUS ROCKS; INFORMATION; ISOTOPES; NUCLEI; NUMERICAL DATA; OXYGEN COMPOUNDS; PARTICLE TRACKS; RADIOISOTOPES; RENEWABLE ENERGY SOURCES; ROCKS; SILICATES; SILICON COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES; ZIRCONIUM COMPOUNDS; ZIRCONIUM SILICATES