FN Archimer Export Format
PT J
TI Asian monsoon modulation of nonsteady state diagenesis in hemipelagic marine sediments offshore of Japan
BT 
AF CHANG, Liao
   BOLTON, Clara T.
   DEKKERS, Mark J.
   HAYASHIDA, Akira
   HESLOP, David
   KRIJGSMAN, Wout
   KODAMA, Kazuto
   PATERSON, Greig A.
   ROBERTS, Andrew P.
   ROHLING, Eelco J.
   YAMAMOTO, Yuhji
   ZHAO, Xiang
AS 1:1,2;2:3;3:4;4:5;5:2;6:4;7:6;8:7;9:2;10:2;11:6;12:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China.
   Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia.
   Univ Aix Marseille, CNRS, IRD, CEREGE UM34, Aix En Provence, France.
   Univ Utrecht, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Utrecht, Netherlands.
   Doshisha Univ, Dept Environm Syst Sci, Kyotanabe, Japan.
   Kochi Univ, Ctr Adv Marine Core Res, Kochi, Japan.
   Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China.
C2 UNIV PEKING, CHINA
   UNIV AUSTRALIAN NATL, AUSTRALIA
   UNIV AIX MARSEILLE, FRANCE
   UNIV UTRECHT, NETHERLANDS
   UNIV DOSHISHA, JAPAN
   UNIV KOCHI, JAPAN
   CHINESE ACAD SCI, CHINA
IF 3.201
TC 26
UR https://archimer.ifremer.fr/doc/00356/46703/47266.pdf
   https://archimer.ifremer.fr/doc/00356/46703/47267.pdf
LA English
DT Article
CR MD 122 / WEPAMA
BO Marion Dufresne
AB We have identified millennial-scale variations in magnetic mineral diagenesis from Pacific Ocean sediments offshore of Japan that we correlate with changes in organic carbon burial that were likely driven by Asian monsoon fluctuations. The correlation was determined by identifying offsets between the positions of fossil diagenetic fronts and climatically induced variations in organic carbon burial inferred from magnetic and geochemical analyses. Episodes of intense monsoon activity and attendant sediment magnetic mineral diagenesis also appear to correlate with Heinrich events, which supports the existence of climatic telecommunications between Asia and the North Atlantic region. Several lines of evidence support our conclusions: (1) fluctuations in down-core magnetic properties and diagenetic pyrite precipitation are approximately coeval; (2) localized stratigraphic intervals with relatively stronger magnetic mineral dissolution are linked to enhanced sedimentary organic carbon contents that gave rise to nonsteady state diagenesis; (3) down-core variations in elemental S content provide a proxy for nonsteady state diagenesis that correlate with key records of Asian monsoon variations; and (4) relict titanomagnetite that is preserved as inclusions within silicate particles, rather than secondary authigenic phases (e.g., greigite), dominates the strongly diagenetically altered sediment intervals and are protected against sulfidic dissolution. We suggest that such millennial-scale environmental modulation of nonsteady state diagenesis (that creates a temporal diagenetic filter and relict magnetic mineral signatures) is likely to be common in organic-rich hemipelagic sedimentary settings with rapidly varying depositional conditions. Our work also demonstrates the usefulness of magnetic mineral inclusions for recording important environmental magnetic signals.
PY 2016
PD NOV
SO Geochemistry Geophysics Geosystems
SN 1525-2027
PU Amer Geophysical Union
VL 17
IS 11
UT 000392717400006
BP 4383
EP 4398
DI 10.1002/2016GC006344
ID 46703
ER

EF