Recognition of broad thermal anomaly around the median tectonic line in central Kii peninsula, southwest Japan: Possible heat sources
Recognition of broad thermal anomaly around the median tectonic line in central Kii peninsula, southwest Japan: Possible heat sources
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日本西南部纪伊半岛中部中位构造线周围存在广泛的热异常:可能的热源
DOI:
10.1111/iar.12440
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发表时间:
2022
期刊:
影响因子:
1.5
通讯作者:
Simon Wallis
中科院分区:
文献类型:
--
作者:
Ken Yamaoka;Simon Wallis
Application of Raman spectroscopy of carbonaceous material thermometry to samples of metasedimentary rock from the low‐grade Sanbagawa belt in the central Kii peninsula reveals a progressive decrease in temperature from ~390 °C close to the northern boundary, a major continental shear zone—the median tectonic line (MTL)—to ~270 °C and ~7 km to the south and roughly constant temperature distribution thereafter. Within the Sanbagawa belt, the thermal structure is not significantly modified by slip‐on fault boundaries between different geological units or folding. Meso‐ and microstructural observations combined with strain analysis using detrital grains in meta‐mudstone indicate a similar deformation history throughout the area and no correlation between ductile strain and temperature gradients. These observations suggest the observed thermal structure was developed after the main stages of ductile deformation of the Sanbagawa belt were complete and are not due to localized preferential exhumation along with the MTL. The observations also require a heat source along with the MTL. Order of magnitude estimates suggest the influx of warm fluid along the MTL are viable causes of the observed thermal anomaly. Although shear heating would be another possible explanation, thermal calculations require anomalous fast slip rates along the MTL and much greater frictional strength than generally considered reasonable. For these reasons, fluid infiltration is our preferred model.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
上松右二;深井順也;金村米博;西林宏起;藤田浩二;中尾直之.;木嶋教行,兼松大介,正札智子,吉岡絵麻,半田有佳子,森内秀祐,埜中正博,沖田典子,露口尚弘,深井順也,樋口裕一郎,末水洋志,金村米博.;沖田典子,正札智子,兼松大介,吉岡絵麻,児玉良典,眞能正幸,木下 学,埜中正博,中島 伸,金村米博,藤中俊之.;露口尚弘,寺川雄三,宇田武弘,木下 学,有田英之,金村米博.;佐々木貴浩,木下 学,藤田浩二,有田英之,宇田武弘,露口尚弘,林 宣秀,深井順也,上松右二,森 鑑二,沖田典子,埜中正博,森内秀祐,中尾直之,金村米博.;有田英之,木下 学,川口 淳,児玉良典,高橋雅道,寺川雄三,沖田典子,高垣匡寿,深井順也,石橋謙一,露口尚弘,森内秀祐,泉本修一,中島義和,藤田浩二,埜中正博,藤本康倫,森 鑑二,正札智子,成田善孝,市村幸一,金村米博.;森 鑑二,正札智子,兼松大介,吉岡絵麻,沖田典子,有田英之,木下 学,宇田武弘,友金祐介,深井順也,石橋謙一,西田南海子,瀧 琢有,埜中正博,泉本修一,中島義和,森内秀祐,露口尚弘,寺川雄三,橋本直哉,児玉良典,廣瀬隆則,金村米博.;梅原 徹,有田英之,金村米博,香川尚己,藤本康倫,貴島晴彦.
通讯作者:
梅原 徹,有田英之,金村米博,香川尚己,藤本康倫,貴島晴彦.
影响因子:
1.5
作者:
Kohei Kazahaya;Masaaki Takahashi;M. Yasuhara;Yoshiro Nishio;Akihiko Inamura;Noritoshi Morikawa;Tsutomu Sato;Hiroshi A. Takahashi;Koichi Kitaoka;Shinji Ohsawa;Yoichi Oyama;Michiko Ohwada;Hitoshi Tsukamoto;Keika Horiguchi;Yuki Tosaki;Tsukasa Kirita
通讯作者:
Tsukasa Kirita
DOI:
10.2465/ganko.84.75
发表时间:
1989
期刊:
Journal of Mineralogy, Petrology and Economic Geology
影响因子:
--
作者:
H. Takagi;K. Shibata;Y. Sugiyama;S. Uchiumi;A. Matsumoto
通讯作者:
A. Matsumoto
影响因子:
3.4
作者:
S. Wallis
通讯作者:
S. Wallis
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Holdsworth;R. E.;Jefferies;S. P.;Wibberley;C. A. 」. and Shimamoto. T.
通讯作者:
C. A. 」. and Shimamoto. T.