Sulfide and sulfate mineralization within a volcanic conduit located in an active hydrothermal field in the Okinawa Trough

被引：0

作者：

Ishibashi, Jun-ichiro ^{[1
,2
]}

Totsuka, Shuhei ^{[2
,3
]}

Miyamoto, Takashi ^{[2
,4
]}

Itatani, Yushi ^{[2
]}

Shimada, Kazuhiko ^{[2
]}

Okazaki, Yusuke ^{[2
]}

Yamasaki, Toru ^{[3
]}

Ikehara, Ken ^{[3
]}

Nagase, Toshiro ^{[5
]}

Takaya, Yutaro ^{[6
,7
]}

Shinjo, Ryuichi ^{[8
]}

Yamanaka, Toshiro ^{[9
]}

Arai, Kazuno ^{[10
]}

Tomita, Makiko ^{[11
]}

Toyoda, Shin ^{[11
]}

Machiyama, Hideaki ^{[12
]}

Iijima, Koichi ^{[12
]}

Yamamoto, Hirofumi ^{[12
]}

Kumagai, Hidenori ^{[12
]}

机构：

[1] Kobe Univ, Ocean Bottom Explorat Ctr, Kobe, Hyogo, Japan

[2] Kyushu Univ, Grad Sch Sci, Fukuoka, Japan

[3] AIST, Geol Survey Japan, Tokyo, Japan

[4] Univ Tokyo, Grad Sch Sci, Tokyo, Japan

[5] Tohoku Univ Museum, Sendai, Miyagi, Japan

[6] Waseda Res Inst Sci & Engn, Tokyo, Japan

[7] Univ Tokyo, Sch Engn, Frontier Res Ctr Energy & Resources, Tokyo, Japan

[8] Univ Ryukyus, Fac Sci, Nishihara, Okinawa, Japan

[9] Tokyo Univ Marine Sci & Technol, Tokyo, Japan

[10] Kochi Univ, Ctr Adv Marine Core Res, Kochi, Japan

[11] Okayama Sci Univ, Okayama, Japan

[12] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Tokyo, Japan

来源：

16TH SGA BIENNIAL MEETING, 2022, VOL 1 | 2022年

基金：

日本学术振兴会;

关键词：

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Scientific drilling was conducted at a craterlike depression located in an active hydrothermal field in the Okinawa Trough. Lithology and mineralogy of the obtained sediment cores were studied by visual core description, measurements of physical properties, XRD (X-ray diffractometer) analysis, and EPMA (electron probe microanalyzer) analysis. Sulfide and sulfate mineralization was recognized only in the layer from 50 to 65 mbsf (meters below the seafloor), which was overlaid by thick pile of pumice gravel or pumiceous tuff. Nevertheless, we found several similarities in their mineralogical and chemical signatures to sulfide minerals collected from hydrothermal chimney and mound structure in the adjacent to the drilled site. These results are attributed to subseafloor mineralization within a volcanic conduit.

引用

页码：153 / 155

页数：3

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