High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346
|Author(s)||Tada Ryuji1, Irino Tomohisa2, Ikehara Ken3, Karasuda Akinori1, Sugisaki Saiko3, Xuan Chuang4, Sagawa Takuya5, Itaki Takuya3, Kubota Yoshimi6, Lu Song2, Seki Arisa1, Murray Richard W.7, Alvarez-Zarikian Carlos8, Anderson William T., Jr.9, Bassetti Maria-Angela10, Brace Bobbi J.11, Clemens Steven C.12, Da Costa Gurgel Marcio H.13, Dickens Gerald R.14, Dunlea Ann G.16, Gallagher Stephen J15, Giosan Liviu16, Henderson Andrew C. G.17, Holbourn Ann E.18, Kinsley Christopher W.19, Lee Gwang Soo20, Lee Kyung Eun21, Lofi Johanna22, Lopes Christina I. C. D.23, Saavedra-Pellitero Mariem24, Peterson Larry C.25, Singh Raj K.26, Toucanne Samuel27, Wan Shiming28, Zheng Hongbo29, Ziegler Martin30|
|Affiliation(s)||1 : Univ Tokyo, Grad Sch Sci, Tokyo, Japan.
2 : Hokkaido Univ, Fac Environm Earth Sci, Sapporo, Hokkaido, Japan.
3 : AIST, Geol Survey Japan, Res Inst Geol & Geoinformat, Tsukuba, Ibaraki, Japan.
4 : Natl Oceanog Ctr Southampton, Southampton, Hants, England.
5 : Kanazawa Univ, Inst Sci & Engn, Kanazawa, Ishikawa, Japan.
6 : Natl Museum Nat & Sci, Dept Geol & Paleontol, Tsukuba, Ibaraki, Japan.
7 : Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA.
8 : Texas A&M Univ, Int Ocean Descovery Program, College Stn, TX USA.
9 : Florida Int Univ, Marine Sci, Miami, FL 33199 USA.
10 : Univ Perpignan, Lab CEFREM, Perpignan, France.
11 : Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE USA.
12 : Brown Univ, Earth Environm & Planetary Sci, Providence, RI 02912 USA.
13 : Univ Sao Paulo, EACH, Sao Paulo, Brazil.
14 : Rice Univ, Dept Earth Environm & Planetary Sci, Houston, TX USA.
15 : Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia.
16 : Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA.
17 : Newcastle Univ, Sch Geog Polit & Sociol, Newcastle Upon Tyne, Tyne & Wear, England.
18 : Christian Albrechts Univ Kiel IFM, Inst Geosci, Kiel, Germany.
19 : MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA.
20 : Korea Inst Geosci & Mineral Resources, Petr & Marine Res Div, Daejeon, South Korea.
21 : Korea Maritime & Ocean Univ, Dept Ocean Sci, Busan, South Korea.
22 : Univ Montpellier 2, Geosci Montpellier, Montpellier, France.
23 : IPMA, Lisbon, Portugal.
24 : Univ Bremen, Dept Geosci, FB5, Bremen, Germany.
25 : Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA.
26 : Indian Inst Technol Bhubaneshwar, Sch Earth Ocean & Climate Sci, Bhubaneswar, India.
27 : IFREMER, Ctr Bretagne, Plouzane, France.
28 : Chinese Acad Sci, Inst Oceanol, Beijing, Peoples R China.
29 : Yunnan Univ, Res Ctr Earth Syst Sci, Kunming, Yunnan, Peoples R China.
30 : Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands.
|Source||Progress In Earth And Planetary Science (2197-4284) (Springer), 2018-03 , Vol. 5 , N. 19 , P. 10p.|
|WOS© Times Cited||39|
|Keyword(s)||Quaternary sediments, Japan Sea, Inter-site correlation, High-resolution age model, IODP, Expedition 346, U1424, U1425, U1426, U1430|
The Quaternary hemipelagic sediments of the Japan Sea are characterized by centimeter-to decimeter-scale alternation of dark and light clay to silty clay, which are bio-siliceous and/or bio-calcareous to a various degree. Each of the dark and light layers are considered as deposited synchronously throughout the deeper (> 500 m) part of the sea. However, attempts for correlation and age estimation of individual layers are limited to the upper few tens of meters. In addition, the exact timing of the depositional onset of these dark and light layers and its synchronicity throughout the deeper part of the sea have not been explored previously, although the onset timing was roughly estimated as similar to 1.5 Ma based on the result of Ocean Drilling Program legs 127/128. Consequently, it is not certain exactly when their deposition started, whether deposition of dark and light layers was synchronous and whether they are correlatable also in the earlier part of their depositional history. The Quaternary hemipelagic sediments of the Japan Sea were drilled at seven sites during Integrated Ocean Drilling Program Expedition 346 in 2013. Alternation of dark and light layers was recovered at six sites whose water depths are > similar to 900 m, and continuous composite columns were constructed at each site. Here, we report our effort to correlate individual dark layers and estimate their ages based on a newly constructed age model at Site U1424 using the best available paleomagnetic datum and marker tephras. The age model is further tuned to LR04 delta O-18 curve using gamma ray attenuation density (GRA) since it reflects diatom contents that are higher during interglacial high-stands. The constructed age model for Site U1424 is projected to other sites using correlation of dark layers to form a high-resolution and high-precision paleo-observatory network that allows to reconstruct changes in material fluxes with high spatio-temporal resolutions.