Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history
Abstract Fluid-inclusion and thermochronometric analyses have been applied to hydrothermal alteration zones and their host rocks outcropping in the Hongu area of the Kii Peninsula, southwestern Japan in an attempt to detect thermal anomalies related to hydrothermal events and quantify the thermal ef...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | Earth, Planets and Space |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40623-023-01921-5 |
| _version_ | 1797415752401158144 |
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| author | Shigeru Sueoka Hideki Iwano Tohru Danhara Masakazu Niwa Mizuho Kanno Barry P. Kohn Makoto Kawamura Tatsunori Yokoyama Saya Kagami Yasuhiro Ogita Takafumi Hirata |
| author_facet | Shigeru Sueoka Hideki Iwano Tohru Danhara Masakazu Niwa Mizuho Kanno Barry P. Kohn Makoto Kawamura Tatsunori Yokoyama Saya Kagami Yasuhiro Ogita Takafumi Hirata |
| author_sort | Shigeru Sueoka |
| collection | DOAJ |
| description | Abstract Fluid-inclusion and thermochronometric analyses have been applied to hydrothermal alteration zones and their host rocks outcropping in the Hongu area of the Kii Peninsula, southwestern Japan in an attempt to detect thermal anomalies related to hydrothermal events and quantify the thermal effects on the host rocks. Hydrothermal events at ~ 150 °C and ~ 200 °C were identified by fluid-inclusion microthermometry of quartz veins in the alteration zones. For the host rocks and alteration zones, in the youngest population zircon yielded U–Pb dates ranging between ~ 74.7–59.2 Ma, fission-track dates of ~ 27.2–16.6 Ma, and (U–Th)/He single-grain dates of ~ 23.6–8.7 Ma. Apatite yielded pooled fission-track ages of ~ 14.9–9.0 Ma. The zircon U–Pb dates constrain the maximum depositional ages of the sedimentary samples. However, the fission-track and (U–Th)/He dates show no clear trend as a function of distance from the alteration zones. Hence, no thermal anomaly was detected in the surrounding host rocks based on the thermochronometric data patterns. The fission-track and (U–Th)/He dates are rather thought to record regional thermal and exhumation histories rather than a direct thermal imprint of fluid flow, probably because the duration of such activity was too short or because fluid flow occurred before regional cooling events and were later thermally overprinted. Apatite fission-track ages of ~ 10 Ma may reflect regional mountain uplift and exhumation related to the obduction of the SW Japan lithospheric sliver onto the Shikoku Basin, or the rapid subduction of the Philippine Sea slab associated with the clockwise rotation of the Southwest Japan Arc. Graphical Abstract |
| first_indexed | 2024-03-09T05:54:07Z |
| format | Article |
| id | doaj.art-3c984d5d9826430087d395669cf9aa50 |
| institution | Directory Open Access Journal |
| issn | 1880-5981 |
| language | English |
| last_indexed | 2024-03-09T05:54:07Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Earth, Planets and Space |
| spelling | doaj.art-3c984d5d9826430087d395669cf9aa502023-12-03T12:15:00ZengSpringerOpenEarth, Planets and Space1880-59812023-11-0175112410.1186/s40623-023-01921-5Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation historyShigeru Sueoka0Hideki Iwano1Tohru Danhara2Masakazu Niwa3Mizuho Kanno4Barry P. Kohn5Makoto Kawamura6Tatsunori Yokoyama7Saya Kagami8Yasuhiro Ogita9Takafumi Hirata10Tono Geoscience Center, Japan Atomic Energy AgencyKyoto Fission-Track Co., Ltd.Kyoto Fission-Track Co., Ltd.Tono Geoscience Center, Japan Atomic Energy AgencyTono Geoscience Center, Japan Atomic Energy AgencySchool of Geography, Earth and Atmospheric Sciences, University of MelbourneTono Geoscience Center, Japan Atomic Energy AgencyTono Geoscience Center, Japan Atomic Energy AgencyTono Geoscience Center, Japan Atomic Energy AgencyTono Geoscience Center, Japan Atomic Energy AgencyGeochemical Research Center, Graduate School of Science, The University of TokyoAbstract Fluid-inclusion and thermochronometric analyses have been applied to hydrothermal alteration zones and their host rocks outcropping in the Hongu area of the Kii Peninsula, southwestern Japan in an attempt to detect thermal anomalies related to hydrothermal events and quantify the thermal effects on the host rocks. Hydrothermal events at ~ 150 °C and ~ 200 °C were identified by fluid-inclusion microthermometry of quartz veins in the alteration zones. For the host rocks and alteration zones, in the youngest population zircon yielded U–Pb dates ranging between ~ 74.7–59.2 Ma, fission-track dates of ~ 27.2–16.6 Ma, and (U–Th)/He single-grain dates of ~ 23.6–8.7 Ma. Apatite yielded pooled fission-track ages of ~ 14.9–9.0 Ma. The zircon U–Pb dates constrain the maximum depositional ages of the sedimentary samples. However, the fission-track and (U–Th)/He dates show no clear trend as a function of distance from the alteration zones. Hence, no thermal anomaly was detected in the surrounding host rocks based on the thermochronometric data patterns. The fission-track and (U–Th)/He dates are rather thought to record regional thermal and exhumation histories rather than a direct thermal imprint of fluid flow, probably because the duration of such activity was too short or because fluid flow occurred before regional cooling events and were later thermally overprinted. Apatite fission-track ages of ~ 10 Ma may reflect regional mountain uplift and exhumation related to the obduction of the SW Japan lithospheric sliver onto the Shikoku Basin, or the rapid subduction of the Philippine Sea slab associated with the clockwise rotation of the Southwest Japan Arc. Graphical Abstracthttps://doi.org/10.1186/s40623-023-01921-5ThermochronologyFluid inclusionsHydrothermal alteration zonesThermal anomalyKii PeninsulaSW Japan |
| spellingShingle | Shigeru Sueoka Hideki Iwano Tohru Danhara Masakazu Niwa Mizuho Kanno Barry P. Kohn Makoto Kawamura Tatsunori Yokoyama Saya Kagami Yasuhiro Ogita Takafumi Hirata Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history Earth, Planets and Space Thermochronology Fluid inclusions Hydrothermal alteration zones Thermal anomaly Kii Peninsula SW Japan |
| title | Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| title_full | Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| title_fullStr | Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| title_full_unstemmed | Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| title_short | Thermochronology of hydrothermal alteration zones in the Kii Peninsula, southwest Japan: an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| title_sort | thermochronology of hydrothermal alteration zones in the kii peninsula southwest japan an attempt for detecting the thermal anomalies and implications to the regional exhumation history |
| topic | Thermochronology Fluid inclusions Hydrothermal alteration zones Thermal anomaly Kii Peninsula SW Japan |
| url | https://doi.org/10.1186/s40623-023-01921-5 |
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