You need JavaScript to view this

Some geophysical and geological studies of the Tanzawa Mountains. [Nakagawa Hot Spring area, Hokizawa, and Higashizawa]

Journal Article:

Abstract

Joints and zeolite-veins in both metamorphic rocks and quartz diorite exposed along the Nakagawa River were studied. Fractures with zeolite-veins are most developed in three areas, the Nakagawa hot spring area, Hokizawa, and Higashizawa. They follow two prevailing directions: N--S with minor right-lateral displacement and N60/sup 0/E with minor left-lateral displacement. The two fractures should represent a conjugate set that was produced by stress with maximum principal axis of N30/sup 0/E-S30/sup 0/W. Distribution and prevailing directions of fractures are illustrated. Geothermal gradients are measured in two newly opened boreholes, at the Nakagawa hot spring area and Higashizawa. The geothermal gradients are 12.60 +- 0.48/sup 0/C/100m at the Nakagawa hot spring and 5.55 +- 0.24/sup 0/C/100m at Higashizawa. Temperature-depth relationships in the two boreholes are given. Seismic observation was made at the Higashizawa. In five days 43 shocks were recorded, of which 20 are thought to have occurred 2 to 20km from the observation station, that is, in and very near the Tanzawa mountains. None have shallower hypocenters than 2 km in depth.
Publication Date:
Nov 01, 1964
Product Type:
Journal Article
Reference Number:
EDB-78-025530
Resource Relation:
Journal Name: Bull. Hot Spring Res. Inst., Kanagawa Prefect.; (Japan); Journal Volume: 2
Subject:
15 GEOTHERMAL ENERGY; JAPAN; GEOLOGICAL SURVEYS; GEOTHERMAL GRADIENTS; SEISMIC SURVEYS; BOREHOLES; DISTRIBUTION; GEOLOGIC FISSURES; GEOPHYSICAL SURVEYS; HEAT FLOW; HOT SPRINGS; METAMORPHIC ROCKS; MICROEARTHQUAKES; QUARTZ; ZEOLITES; ASIA; CAVITIES; CHALCOGENIDES; EARTHQUAKES; GEOLOGIC STRUCTURES; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MINERALS; OXIDES; OXYGEN COMPOUNDS; ROCKS; SEISMIC EVENTS; SILICON COMPOUNDS; SILICON OXIDES; TEMPERATURE GRADIENTS; THERMAL SPRINGS; 150202* - Geology & Hydrology of Geothermal Systems- Non-USA- (-1989); 150301 - Geothermal Exploration & Exploration Technology- Geophysical Techniques & Surveys
OSTI ID:
5291115
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: KOHOD
Submitting Site:
TIC
Size:
Pages: 1-18
Announcement Date:

Journal Article:

Citation Formats

Minakami, T, Matsuda, T, Hiraga, S, Horai, K I, and Sugita, M. Some geophysical and geological studies of the Tanzawa Mountains. [Nakagawa Hot Spring area, Hokizawa, and Higashizawa]. Japan: N. p., 1964. Web.
Minakami, T, Matsuda, T, Hiraga, S, Horai, K I, & Sugita, M. Some geophysical and geological studies of the Tanzawa Mountains. [Nakagawa Hot Spring area, Hokizawa, and Higashizawa]. Japan.
Minakami, T, Matsuda, T, Hiraga, S, Horai, K I, and Sugita, M. 1964. "Some geophysical and geological studies of the Tanzawa Mountains. [Nakagawa Hot Spring area, Hokizawa, and Higashizawa]." Japan.
@misc{etde_5291115,
title = {Some geophysical and geological studies of the Tanzawa Mountains. [Nakagawa Hot Spring area, Hokizawa, and Higashizawa]}
author = {Minakami, T, Matsuda, T, Hiraga, S, Horai, K I, and Sugita, M}
abstractNote = {Joints and zeolite-veins in both metamorphic rocks and quartz diorite exposed along the Nakagawa River were studied. Fractures with zeolite-veins are most developed in three areas, the Nakagawa hot spring area, Hokizawa, and Higashizawa. They follow two prevailing directions: N--S with minor right-lateral displacement and N60/sup 0/E with minor left-lateral displacement. The two fractures should represent a conjugate set that was produced by stress with maximum principal axis of N30/sup 0/E-S30/sup 0/W. Distribution and prevailing directions of fractures are illustrated. Geothermal gradients are measured in two newly opened boreholes, at the Nakagawa hot spring area and Higashizawa. The geothermal gradients are 12.60 +- 0.48/sup 0/C/100m at the Nakagawa hot spring and 5.55 +- 0.24/sup 0/C/100m at Higashizawa. Temperature-depth relationships in the two boreholes are given. Seismic observation was made at the Higashizawa. In five days 43 shocks were recorded, of which 20 are thought to have occurred 2 to 20km from the observation station, that is, in and very near the Tanzawa mountains. None have shallower hypocenters than 2 km in depth.}
journal = {Bull. Hot Spring Res. Inst., Kanagawa Prefect.; (Japan)}
volume = {2}
journal type = {AC}
place = {Japan}
year = {1964}
month = {Nov}
}