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Data Publisher for Earth & Environmental Science

Shibutani, Susumu; Lin, Weiren (2021): Fracture density for each category observed from drill core samples of Hole FDB-1 penetrated through the Futagawa fault, SW Japan [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933470, In: Shibutani, S; Lin, W (2021): Physical property distribution and fracture density of a ~700 m-deep borehole penetrated through the Futagawa fault ruptured during the 2016 Kumamoto earthquake mainshock [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.933472

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Keyword(s):
downhole logging; fracture density; Futagawa fault; Futagawa fault drilling Project; Natural gamma ray; P-wave velocity; resistivity; volcanic rocks
Related to:
Shibutani, Susumu; Lin, Weiren; Sado, Koichiro; Aizawa, Akihiro; Koike, Katsuaki (2022): An ancient >200 m cumulative normal faulting displacement along the Futagawa fault dextrally ruptured during the 2016 Kumamoto, Japan, earthquake identified by a multiborehole drilling program. Geochemistry, Geophysics, Geosystems, https://doi.org/10.1029/2021GC009966
Further details:
Kyoto University (2018): FY29 Commissioned for the disaster prevention on nuclear facilities (Boring core and Stress measurement using borehole: No.2 Futagawa fault) (in Japanese). Nuclear Regulation Authority, Japan, Technical Report (3/3), https://www.nra.go.jp/data/000256426.pdf
Coverage:
Latitude: 32.806200 * Longitude: 130.860100
Minimum DEPTH, sediment/rock: 302.5 m * Maximum DEPTH, sediment/rock: 665.5 m
Event(s):
FDB-1 * Latitude: 32.806200 * Longitude: 130.860100 * Location: Japan * Method/Device: Downhole logging * Comment: Borehole: Futagawa fault; max. measured depth: ~666.2 m; max. true vertical depth:~666.1 m;Borehole deviation angle: 0.8°;Deviation azimuth: N90°E;Devices: RESORT-21
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
HoleHShibutani, Susumu
Depth, top/minDepth topmShibutani, Susumu
Depth, bottom/maxDepth botmShibutani, Susumu
DEPTH, sediment/rockDepth sedmShibutani, SusumuGeocode
Fracture densityFrac dens#/mShibutani, SusumuCalculatedCategory L (<30° from the horizontal plane)
Fracture densityFrac dens#/mShibutani, SusumuCalculatedCategory M (≥30° and <60°)
Fracture densityFrac dens#/mShibutani, SusumuCalculatedCategory H (≥60)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2184 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


H

Depth top [m]

Depth bot [m]

Depth sed [m]

Frac dens [#/m]
(Category L (<30° from the hor...)

Frac dens [#/m]
(Category M (≥30° and <60°))

Frac dens [#/m]
(Category H (≥60))
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